I need help! Security error in LG P970 - LG Optimus Black

Well I am new in this forum, and I always come here but never registered until now. The problem with my LG is that the button on / off began to fail and have problems, but I solved it using the G button to unlock, but not to turn it on.
Then the usb por ( Yeah, the one that u use for charging ) And I took it to a technician when stopped charging. He said he couldn't sold it because it could damage a piece there, so he simply put a masking tape and stuck the piece that was dropped. And of course, it worked again .
That day I was going to change the rom , but then i decided just do a full wipe to the lg. I downloaded ROM Manager, downloaded CWM and reboot into CWM . And that gave me a Security Error.
I didn't worry about it , I can fix it with the official program of LG or with SFT , the problem is that the computer does not read the phone. I need help urgently , I really want to solve this on my own .:crying::crying::crying:
And I think you noticed that english isn't my first language

mxnnlight said:
Well I am new in this forum, and I always come here but never registered until now. The problem with my LG is that the button on / off began to fail and have problems, but I solved it using the G button to unlock, but not to turn it on.
Then the usb por ( Yeah, the one that u use for charging ) And I took it to a technician when stopped charging. He said he couldn't sold it because it could damage a piece there, so he simply put a masking tape and stuck the piece that was dropped. And of course, it worked again .
That day I was going to change the rom , but then i decided just do a full wipe to the lg. I downloaded ROM Manager, downloaded CWM and reboot into CWM . And that gave me a Security Error.
I didn't worry about it , I can fix it with the official program of LG or with SFT , the problem is that the computer does not read the phone. I need help urgently , I really want to solve this on my own .:crying::crying::crying:
And I think you noticed that english isn't my first language
Click to expand...
Click to collapse
I'm guessing that you are running ICS. You just can't install CWM on the official ICS and install... The boot loader is locked.
I have no idea what to without USB and a computer. You can always load the ROMs on the SD card manually, but that won't work for solutions that require a PC.
I'm reading that your USB works, but the drivers don't. Correct?
- Try a different USB cable. Just because it charges doesn't means it working data-wise.
- Are you using the PC drivers from here? http://forum.xda-developers.com/showthread.php?t=1111771&page=65
- Sometimes you gotta cut your losses. Your war-torn, battle-hardened P970 might be ready for retirement.

Related

[Q] Can't boot without Charger/Usb

Hello
I had some trouble with a bricked SGS for about 3 weeks ago but got it on the run again with some flashing help.
Now i have this strange problem. If i turn it off or if it just goes black out, which it has begun to do after i flashed it, then it can't turn on, it just show the sun looking loading icon and then a empty battery icon and then turns off.
I can't load recovery mode with the combo, but i can make the download mode combo work.
But if i connect the phone with the charger/usb i recognize it and show that it charging up. Now it boot and shows the Galaxy I9000 model no. image.
Had tried flashing newer versions From XXJPO -> XXJPY -> XWJS3 and both with and without pre-partition and it still occur.
Now the question: Does any of you experienced people know this problem and can it be fixed somehow ?
Thank you in advance
First i would liik to charge phone for 24 hours and also check with another battery .
jje
JJEgan said:
First i would liik to charge phone for 24 hours and also check with another battery .
jje
Click to expand...
Click to collapse
The battery don't seem to be defected. Once the phone is booted with a cable connected, it goes without problems. It just will not boot without a charging signal.
Bump - Still actual
Try using Block 2 Odin method here to go back first to Eclair and if that works test phone then upgrade to Froyo .
jje
JJEgan said:
Try using Block 2 Odin method here to go back first to Eclair and if that works test phone then upgrade to Froyo .
jje
Click to expand...
Click to collapse
That happened to me a while back and I couldn't find a fix for it. Ended up doing the above and it resolved it.
Z3icon said:
Hello
I had some trouble with a bricked SGS for about 3 weeks ago but got it on the run again with some flashing help.
Now i have this strange problem. If i turn it off or if it just goes black out, which it has begun to do after i flashed it, then it can't turn on, it just show the sun looking loading icon and then a empty battery icon and then turns off.
I can't load recovery mode with the combo, but i can make the download mode combo work.
But if i connect the phone with the charger/usb i recognize it and show that it charging up. Now it boot and shows the Galaxy I9000 model no. image.
Had tried flashing newer versions From XXJPO -> XXJPY -> XWJS3 and both with and without pre-partition and it still occur.
Now the question: Does any of you experienced people know this problem and can it be fixed somehow ?
Thank you in advance
Click to expand...
Click to collapse
i agree wiv the suggetions frnds given.galaxy is hard to brick.i did all sort of unusual things an even uptodate lol.don worri m8 jus flash to older stock and hard reset.check the connectivity pins,to b clean even the battri pins.somtimes its best u format ur eternal xd on pc an format.and giving another hard rest makes things better.i had once formated my int sd on pc and the phone had emptied,then i flashed and things worked fine.personally sticking to stock rom is better if u dont wan troubles,cause every custom rom has som drawback an needs a lil knownledge to tweak it up.check kies if ur on it,i recomend download the recovery driver in it.hope u get some help.cheeeerzzzz
Same here...
Hello everyone,
I too have the same issue as stated in the first post.
I even had issue sometimes that when boot up.
The USB notification icon wouldnt turn off even if i wasn't connected.
Some threads suggested that I clean the USB port, which i did and nothing changed, even if it looked a little bit dirty in there (Hard to say since it is really small).
Now the USB port looks just as new but same issue: I cant power on the unit witout having it connected with a power cord.
Also, when offline in download mode, Odin detect the unit and I can flash my device (Which I did yesterday by flashing UGJH2 re-partition and UGJL2 not re-partition) but when boot up, I can't make it to sync up with the computer. No sync possible (Also now I'm not rooted anymore).
The unit is under warranty but since it is unlocked with a tool that needed rooting to lock back, abviously I would need to be rooted again but to do it, I need to be able to sync it with my PC (No cant do here).
I have some engineer at work that offered me to check it out for me, they think it is related with the USB port, but I'm worried about the warranty seal. I found how to disasemble it but does anybody knows where it could be located on the I9000M from bell (Vibrant)? Does it have one?
Anybody have any better suggestion or a second opinion, please?
Its my 3rd Galaxy S from Bell and Samsung is now the last company I would think when buying a new mobile.
EDIT: Did the Block 2 Method and now it doesnt even want to boot at all (Did the JPY_JPY_JPY.tar part), now it shows the loading sign even faster and the battery doesnt even show it self at all.
Hello again people!
Got my friend engineers to open the phone and they didnt find anything that would cause my issue (Also no warranty label...).
Does anybody knows how to root a Galaxy S with Froyo without a PC?
I want to return my phone to Bell Canada under warranty but my phone is unlocked and I want to lock it back before sending it back and I need to be rooted to do so...
Thanks for your help!
I got the same problem here. Could someone tell me more on this. What is this Block 2 ODIN method?
this problem can be caused by water or sweat that got inside the case of your sgs.
the biggest hole in the case is micro-usb port) i think condensation accumulated there and locked some contacts.
try to disassemble the phone and carefully clean and dry it.
this helped me.

HELP MY phone is Bricked SPICE 410

Sad day today....all was well, tried to play around with Swap memory and then the trouble started,
First all the data on my SD card got wiped out !
After that the phone just went dead, no led when connected to charge,screen was dead no light, flicker of any sort, removed battery and tried many times still no luck...
suspected it could be a software problem so connected to to SUT, a phone was detected, tried completing the stock ROM reload, went to certain extent but then resulted in FAIL
Post that now I get a led red light when connected to charger but nothing else. does not go into download mode or battery charging animation.
Tried SUT once again but this time there is no phone detected.....
not sure if it is battery / handset problem....did the core areas in the phone get corrupted while playing with Swap ???
I partitioned using CWM, used Swapper2 app, all went well till I realised that data in SD was wiped clean.
Was on sharp mod...missing the phone badly...any help or guidance will be much appreciated...
Also will visit to service center help now that this phone is completely off SPICE stores ? yes it is still under "Warranty"
had to switch back to blackberry yucksss !!...for sometime I was infact trying to touch the screen
hoping to hear soon from you guys !!!!
First of all very sad to hear, My heartfelt condolences....
At this stage after trying SUT for multiple times, I think a visit to Spice service center is the only solution, please try it and update here
Be ready to part with your phone for a week atleast
BACK in BUSINESS
I got it Back folks.....thanks to SUT & Windows.....was breaking my head on what could be wrong...retraced back all my steps....
checked if the device has been wrongly configured by windows....went to device manager...lo I saw there was "Other Device" with something registered as Qualcomm CDMA. Deleted it...removed the usb and reconnected.....
Windows did a fresh installation of the device...after sometime I could see F drive of the device with image folder and all its contents....
Simply ran SUT once again, even now there was no display, just a gut feel everything will proceed smoothly....and yes SUT detected the device went through the installation. At one step it also asked if it could format F drive....I went ahead pressing OK....SUT finished successfully...after few anxious moments saw the familiar battery charging icon ......My day was made....and after few more anxious moments....I pressed power button to see SHARP Loading....my device is reborn again !
lesson learnt.....Don't play with SWAP mem, let the dev folks figure out and guide us...
If in any trouble keep SUT and preferrably Stock NB0 file handy.
Back in business folks !!
well done bro, was following your situation closely, so glad your phone is back to normal.
Sent from my SH8188U using xda premium
Glad that it works
Great job done
Sent from my Desire HD using xda premium
I will note your experience. Because I am a newbie who tend to do stupid things may be experiencing the same thing. Glad you can solved it and thanks for sharing.
Device still bricked
Hi, I have the same problem. My device (spice mi-410) suddenly stopped working. screen is blank, without power. It wont start in recovery or download mode. It wont charge. Only red led when connected to charger. That red led comes even when battery is not placed in the device and charger is connected. When i connect it to pc, windows detect it as HUAWEI Mobile Connect - Bus Enumerate Device in USB controllers. F disk is not visible nor can SUT detect it. Guess I am struck. This thing happened without me doing anything. It was working properly till night, just saw the device in the morning in this state. I had flashed official .nb0 few months back and the device was working flawlessly till now. Sending it to repairs to spice service centre is out of question (as it is out of warranty), nor those idiots know anything, they just gave me an estimate of INR 9k for repairs without seeing the device.
Any help appreciated.
9K OMG without looking at the phone
ya that idiot has fu***-up my phone earlier too. few months back my glass cracked, although the phone kept working fine. he changed the glass and returned the phone 2 months later, with all signs of ra**e been committed on phone. they never knew anything about the phone and were surprised to see such a huge device from spice. so they tried all there *tools* to pry it open before realizing that what damage they have done. my gps stopped working since then, they refused to fix it saying that as the phone has been *opened* (ra**d by them) it is out of warranty, although it was still under warranty.
And now this has happened.
Mod edit : dont use any abusive words its against the forum rules if u do need to use them i have edited ur post OK
forthe said:
Hi, I have the same problem. My device (spice mi-410) suddenly stopped working. screen is blank, without power. It wont start in recovery or download mode. It wont charge. Only red led when connected to charger. That red led comes even when battery is not placed in the device and charger is connected. When i connect it to pc, windows detect it as HUAWEI Mobile Connect - Bus Enumerate Device in USB controllers. F disk is not visible nor can SUT detect it. Guess I am struck. This thing happened without me doing anything. It was working properly till night, just saw the device in the morning in this state. I had flashed official .nb0 few months back and the device was working flawlessly till now. Sending it to repairs to spice service centre is out of question (as it is out of warranty), nor those idiots know anything, they just gave me an estimate of INR 9k for repairs without seeing the device.
Any help appreciated.
Click to expand...
Click to collapse
Hi Pretty similar to the problem I had, try and do the following
Try to use the newer SUT (1.8) version, search in this forum and you will get the link. If you are on it great.
Keep the nb0 file of any original rom - Spice GB on .32 kernel or Sharp GB on .35 kernel
connect the device with battery (hopefully charged well) to your computer, let windows detect it, launch your SUT, if you see a phone connected you are in luck !...just proceed with the next steps of by selecting the nb0 file, and selecting erase all user data.
SUT will prompt that your F disk is gone bad and do you need to reinstall it, select yes and let SUT do its stuff.
This will 100% load the ROM and F disk stuff and device will boot into the ROM once you finish.
In case SUT is not showing A phone is connected, restart your computer, ensure no other application is running, clear all earlier recognized devices in Device Manager and start fresh by connecting the device again.
vijayar said:
Hi Pretty similar to the problem I had, try and do the following
Try to use the newer SUT (1.8) version, search in this forum and you will get the link. If you are on it great.
Keep the nb0 file of any original rom - Spice GB on .32 kernel or Sharp GB on .35 kernel
connect the device with battery (hopefully charged well) to your computer, let windows detect it, launch your SUT, if you see a phone connected you are in luck !...just proceed with the next steps of by selecting the nb0 file, and selecting erase all user data.
SUT will prompt that your F disk is gone bad and do you need to reinstall it, select yes and let SUT do its stuff.
This will 100% load the ROM and F disk stuff and device will boot into the ROM once you finish.
In case SUT is not showing A phone is connected, restart your computer, ensure no other application is running, clear all earlier recognized devices in Device Manager and start fresh by connecting the device again.
Click to expand...
Click to collapse
hi
this is just my exp i had to use the old sutL3 which is the old 1.7.3
to flash the original India update of the 2.3 it did not work on the 1.8
this is based on my experience when i flashed back the orignal to sell the same and get the one V . I could be wrong do correct me if so but i did this just around 2 weeks back:laugh:
haree said:
hi
this is just my exp i had to use the old sutL3 which is the old 1.7.3
to flash the original India update of the 2.3 it did not work on the 1.8
this is based on my experience when i flashed back the orignal to sell the same and get the one V . I could be wrong do correct me if so but i did this just around 2 weeks back:laugh:
Click to expand...
Click to collapse
You could be right, if I recollect I infact flashed directly Sharp Stock ROM when I was facing the same problem. ....
btw how is HTC ONE V....you could have invested in a device with more RAM If I am not wrong this is with 512
vijayar said:
You could be right, if I recollect I infact flashed directly Sharp Stock ROM when I was facing the same problem. ....
btw how is HTC ONE V....you could have invested in a device with more RAM If I am not wrong this is with 512
Click to expand...
Click to collapse
hi
its ok budget buddy i didnt have much money and only the spice guy was giving me the buy back :laugh:
Phone not detected
I tried all the methods mentioned above on two different PC's. The Problem is that the phone is detected as "USB Input Device". The driver is provided by SUT. When it says device driver installed it shows as "usb input device" and the red notification LED glows. This happens whether or not battery is inserted. I charged the battery externally too.
Any Solutions?

USB-connection (Smartflash, NVFlash, Data-transfer)

Hi,
I've search thru the forums and tried several things, but haven't found a solution.
My problem is that I no longer can make a USB-connection to my O2X.
The only thing that works in the micro-usb is charging. What I tried:
- Smartflash (power-up without battery while holding vol-)
- NVFlash (power-up without battery while holding both vol-buttons)
- Ordinary USB-connection (flash-drive)
- Cleaned it for dust
All of this was done on different windows machins (WinXP and Win7), all USB-ports and different USB-cables (inlcuding one that I know has worked before). Windows don't even show me the device.
The reason why I want to flash is that I think the current baseband (that I flashed) is not the best for my phone. So I want to try another baseband.
Do any of you have a suggestion on how to fix my phone or is the hardware toasted?
Best regards
Anders
Unable to install stock rom
DEAR MEMBERS
please help me i am running cm7.2 in my o2x and want to go back to stock rom.
i have downloaded smartflash tool and stock rom fls and bin files and done the entire procedure as mentioned in the guide
but when i press start button it asks to install odm which is not mentioned in the steps.
when i press yes nothing happens when i press no nothing happens.
please help me to get back to stock rom or else i may void my warranty.
once before i installed the stock rom by the procedure and was successful but this time i am unable
First uninstall lg software and lg usb drivers then first install LGUnitedMobileDriver_S498MA21_WHQL_ML_Ver_2.1.exe then run the SmartFlashTool_P990.exe then remove battery plug device in while holding volume down - and them try.
komunistvb said:
First uninstall lg software and lg usb drivers then first install LGUnitedMobileDriver_S498MA21_WHQL_ML_Ver_2.1.exe then run the SmartFlashTool_P990.exe then remove battery plug device in while holding volume down - and them try.
Click to expand...
Click to collapse
Thanks for your suggestion, already tried this. The problem is that Windows don't even pickup on my O2X when plugged in. No new devices in the Device Manager shows up.
aziz.chamadia said:
DEAR MEMBERS
please help me i am running cm7.2 in my o2x and want to go back to stock rom.
i have downloaded smartflash tool and stock rom fls and bin files and done the entire procedure as mentioned in the guide
but when i press start button it asks to install odm which is not mentioned in the steps.
when i press yes nothing happens when i press no nothing happens.
please help me to get back to stock rom or else i may void my warranty.
once before i installed the stock rom by the procedure and was successful but this time i am unable
Click to expand...
Click to collapse
Please don't hijack my thread!
Aduck79 said:
Thanks for your suggestion, already tried this. The problem is that Windows don't even pickup on my O2X when plugged in. No new devices in the Device Manager shows up.
Click to expand...
Click to collapse
Try going to Hardware and Sound and then Devices and Printers in the Control Panel. Maybe it'll show there.
Aduck79
You may try in a virgin PC where no USB drivers have been installed. Best would be format PC reinstalll WIN OS and try NVFLASH or SMARTFLASH after installing LG USB drivers. I have also faced similar problems and solved them in different PCs either friends or office. I somehow feel LGs drivers are badly written and not very smooth functioning. In fact I (and many others) have bricked O2X trying to upgrade to official GB updates by using LG PC suite and drivers.
This is only my suggestion. I did not had to format my PC any point of time. Don't curse me if this fails. This is only one of the trials and errors.
Maybe I should try from a Linux live-cd to check if it's windows or the phone who's acting strangely.
Sent from my LG Optimus 2X
I got the exact same problem and after searching the net there are a lot of people having the same issue too.
Don't want to sound negative but the majority never got it to run again. For some it automagically started working again.
I got it to run only on Stock Froyo, no stock GB and no ICS with all the ICS Kernels available.
The thing which helped me on Froyo was: http://forum.xda-developers.com/showpost.php?p=28985033&postcount=5
Unfortunately CM9 has no secret menu.
I once had it recognized with Jarvis Kernel on Paranoidandroid for a second and had a hotreboot. Then never again.
I'm pretty sure the PC and the LG Drivers make no difference in this case, as I got 5 different PCs running different OS for testing and they never made a difference.
Aduck79 said:
Hi,
I've search thru the forums and tried several things, but haven't found a solution.
My problem is that I no longer can make a USB-connection to my O2X.
The only thing that works in the micro-usb is charging. What I tried:
- Smartflash (power-up without battery while holding vol-)
- NVFlash (power-up without battery while holding both vol-buttons)
- Ordinary USB-connection (flash-drive)
- Cleaned it for dust
All of this was done on different windows machins (WinXP and Win7), all USB-ports and different USB-cables (inlcuding one that I know has worked before). Windows don't even show me the device.
The reason why I want to flash is that I think the current baseband (that I flashed) is not the best for my phone. So I want to try another baseband.
Do any of you have a suggestion on how to fix my phone or is the hardware toasted?
Best regards
Anders
Click to expand...
Click to collapse
I'm afraid without any USB connection at all you are pretty much out of luck I'd say
kohos said:
I got the exact same problem and after searching the net there are a lot of people having the same issue too.
Don't want to sound negative but the majority never got it to run again. For some it automagically started working again.
I got it to run only on Stock Froyo, no stock GB and no ICS with all the ICS Kernels available.
The thing which helped me on Froyo was: http://forum.xda-developers.com/showpost.php?p=28985033&postcount=5
Unfortunately CM9 has no secret menu.
I once had it recognized with Jarvis Kernel on Paranoidandroid for a second and had a hotreboot. Then never again.
I'm pretty sure the PC and the LG Drivers make no difference in this case, as I got 5 different PCs running different OS for testing and they never made a difference.
Click to expand...
Click to collapse
Does the ROM has anything to do with Smartflash- and NVflash-modes? My guess is that they have nothing to do with each other. So my problem should persist even though I try different ROMs. Correct me if I'm wrong.
I'll look into the Froyo-topic you linked to.
Strange. Now it suddenly works again. I didn't do anything from the last time. That's odd.
I don't think that the ROM specifically has to do with the problem.
Stock Froyo just happened to be the only ROM where switching USB connection modes made the device seen in device manager on Windows. (Although it required manual .inf driver clickery.)
I'm sure missing USB connectivity affects people in NVFlash as well.
In my case I can't do **** ranging from USB mass storage when booted up, ADB or NVFlash when booting.
However restoring to the Froyo nandroid makes everything working for me again.
oh oh, it looks like the same issue that i had... No PC-connection (Win/Linux) recognized the mobile via USB. No Chance to get it back to work.
I flashed back to stock (very difficult without NVFlash...) and then send it back LG Service for repearing. After three weeks i got it back. They changed the hole mainboard so i got a new IMEI but USB works now again.
zeonit said:
oh oh, it looks like the same issue that i had... No PC-connection (Win/Linux) recognized the mobile via USB. No Chance to get it back to work.
I flashed back to stock (very difficult without NVFlash...) and then send it back LG Service for repearing. After three weeks i got it back. They changed the hole mainboard so i got a new IMEI but USB works now again.
Click to expand...
Click to collapse
Yeah. It stopped working after I booted a couple of times
And it was only semi working, it didn't want to go into Smartflash-mode, only NVFlash and Flash-drive.
@aduck79,
Did you already try tonyp's modded adb drivers?
http://forum.xda-developers.com/showthread.php?t=1752074
aragorn7 said:
@aduck79,
Did you already try tonyp's modded adb drivers?
http://forum.xda-developers.com/showthread.php?t=1752074
Click to expand...
Click to collapse
Nope, as I'm quite sure that it's not a matter of drivers.
Windows don't even detect the phone. So I think that the phone doesn't present itself.
Sent from my LG Optimus 2X
Since you already tried changing cables, computers, and even windows & Linux, and since it works on and off, You're right - it isn't the rom nor the drivers. it does sound like the hardware is messed up where the cable connects.
Any chance you can get it serviced? Hope your warranty covers it.
Sent from my LG-SU660 using xda premium
Same problem, no solution
Hi,
I seem to have the same sort of problem with my phone.
I used to be able to connect my phone to my computer just fine until I upgraded it to Gingerbread. Or that is at least the last time the USB connection seemed to work.
I have looked all over the internet now to find a solution to the problem but can't find one. Hope you guys could help me on this.
My phone is an LG optimus 2x P990 with a stock ROM gingerbread 2.3.4
LGE Version LGP990-V20r
Kernel version 2.6.32.9
I've tried so far:
- rebooting phone and pc
- factory reset phone
- Use other pc's => didn't work
- Connect a samsung phone to my pc with my LG cable => did work
- uninstall and reinstall all the necessary drivers
- mass storage mode on and off
- Installed android SDK and looked for adb devices, none shown
- phone doesn't show in the computers device manager either
Although when I do connect the phone it starts charging and if I go to the tethering settings it does recognize the fact that it is connected through USB.
So why can't I get my PC to recognize the phone.
I really need it cause I would like to root my phone to install a custom ROM.
I have tried rooting it with Gingerbreak as well, but that doens't seem to work either.
Thanks for the help
I just made a recovery.log in CWM:
http://pastebin.com/yJw6LEmf
It mentions something about USB in the bottom. Maybe it's a software issue after all?
Sent from my LG Optimus 2X

[SOLVED] No USB sync, only charge O2X

Ok Guys, I started this thread because last weekend I had an interesting issue with my O2X. From one day to another, whenever I connected my phone to the computer it only charged, I had no USB connection. I’m not yet quite sure why it happened, the last thing I did to my phone was install CM10 nightly of 31 October 2012, and then I changed the default baseband I had (725) to the one GetRil was telling me to install (LGP990AT-00-V20l-EUR-XX-OCT-20-2011 0_CP) (this baseband didn’t fixed the strange noises of in call) two days after that I got the no USB bug, at first I thought it was software related, then after lots of reading and trying different cables and computers I thought it was hardware related, but then I saw an interesting chance of fixing it, and it did in my case
Credit goes to Kohos, I manage to have USB fixed temporary thanks to his post on modaco.com
I’M NOT TELLING THAT CM10 CAUSE THIS BUG, IT JUST HAPPENED TO ME WHILE USING THIS ROM
Specs
Phone: Optimus 2x (p990H made in south Korea)
Rom: CM10 Oct 31 2012 (when got the bug) now CM7 nightly 15 July 2012
Kernel: Symbiosis 2.6.32.59 v1.2
Carrier: Telcel
Country: México
Ril: 0725 (V10d, Europe)
BB: 1035.21_20110725
CWM: 5.0.2.0 (no touch version)
To solve this issue you need to have a stock ROM that can be flashed by CWM. Can be the rom, or a backup of the stock rom (If you don’t have one send me a PM), I didn’t tried stock-based ROM so those may or may not work; I’m not sure but rather use an original stock ROM. You also need to be able to enter CWM recovery, and have LGE drivers up to date.
For this method I used a stock nandroid backup.
I’ll describe step by step all I did to solve this issue so you can give it a shot:
1. If you have a flashable stock rom you may skip this step and go to step 3, if what you have is a nand backup you need to make your partitions back from EXT4 to EXT3 (this is the format that stock rom uses) so need to download the tool R2 found on the first post here:
http://forum.xda-developers.com/showthread.php?t=1021549
put it on your external SD card along with the backup of the stock rom
2. Reboot to enter CWM recovery and install the tool R2 (NOTE: this will erase all information of the internal memory)
3. Install or flash your stock rom or backup (In case you're using my backup, keep in mind, my file IS NOT a flashable rom, it is a backup, so trying to use the option "flash zip from external sd card" WON'T work, what you need to do is unzip the file and put it on sdcard/clockworkmod/bakcup, then on the recovery, you have to use the option "restore from external sd card", that way it should work, keep in mind that if you change the name of the file it will give md5 error for the name won't match the backup's md5)
4. Reboot and start the phone, once it is all loaded, on the phone app dial: 1809#*990# this will take you to the service (hidden) menu (If it doesn’t take you automatically to the service menu (without clicking dial) you’ll need another ROM or backup)
5. In this menu you’ll need to scroll to the option: Module Test > USB Mode Selection, in there make sure the option LG Android USB is selected
6. Then go back to the root of the hidden menu, and go to Port settings, there you’ll see several options, the ones we’re interested in are: AP USB, CP USB, AP UART, CP UART, the default should be AP USB, you can start playing with those options. (While doing this, you might want to play with your computer device manager scanning for hardware changes, that might help detecting the USB)
The recommendation is to select CP UART, wait, if your problem is not hardware related, it should popup a message of new unknown device, or LGE Platfrom Android USB device. If your USB show some life signal, then you’re almost done, if not, keep playing with the four options until you see some life signal.
What I did was select CP UART, click Ok, wait, AP UART, click OK, wait, CP USB, click OK, wait, AP USB, click OK, I waited here about 1 min, and then on the computer device manager I scanned for hardware changes, and suddenly my computer started installing all drivers again, this last option is the one that must keep selected even with reboot of the phone.
7. Once you get all done, reboot the phone and connect it to USB to see if it is recognized again, if not, repeat steps 4 to 6
8. Ok, If everything went fine, you should now have USB connection, now I would recommend you flash your Stock Rom, so everything that might cause this bug gets fixed (if you don’t do this, you might get the bug back eventually). To do so you might need to turn off your phone and plug it to your computer while clicking PWR and VOl- at the same time, if your computer doesn’t recognize your phone, use the device manager and scan for hardware changes, this should reinstall the driver needed to make this happen.
9. Finally I restored my last nandroid backup through cwm
I did this on Monday, and two days later I had no USB connection again, I repeated this steps and I had USB detection once more, today it happended again, and repeated the steps so I’m pretty sure this fix should work every time.
NOTE: This is a temporary fix, I've been trying to identify why the bug keeps comming back
Hope this help you all get over this serious bug :laugh:
Updates
This is my last froyo teclel stock backup
http://www.4shared.com/zip/AEVLSE34/2007-02-01000516.html
http://dl.dropbox.com/u/7867872/2007-02-01.00.05.16.zip
Disclaimer: Even though I'm sure it will work, try it at you own risk, I'm not responsable for any bad behavior or damage that could happen to your phone
UPDATE:
Ok, guys I told you I would make some test to make sure the bug won't come back or identify the problem, what I've found so far is that the problem might be caused by the wall charger (but might not the the only reason), If I'm not wrong, the LG stock charger has output of 5.2V - 650mA DC and I've been using a motorola charger (5.1V - 850mA DC output).
Four days ago I started charging my phone only with my computer (usb port has output of 5V - 500mA) and I've had no trouble at all, the bug hadn't come back, today I charged my phone with the wall charger and the bug immediately came back, so for now that's my theory, the wall charger, stock or not, might fail and deliver more current that the O2X need so it mess the phone, I'm going to make fix on my charger to prove my theory, (I have no money for a new charger xD, but I'm studying electronics) if it fix it, I'll let you know, but you can try and charge your O2X with your computer for a day or two to help me prove my theory or prove me wrong
UPDATE:
It's been some time since I last posted here, I've been busy with my finals, but have had some time to make some tests to my phone. On my last update I told you that I had a theory about the bug, well, so far I can tell you that the wall charger indeed have something to do with the bug, but its not the cause of it, I've been using my wall charger letting my phone connected all-night long and the bug seems to happen again, but letting my phone connected to the PC for a while allows the USB sync and debugging again, so I'm not sure why it happens, I'm about to finish my finals so I'll try to make some tests once I'm done, hope this giude help you
UPDATE:
Well, as I was testing my theory, I go back to zero, this is because, my phone, doesn't have the bug anymore, so I have no chance to keep testing solutions for it, the conclusion I got with this is that the wall charger doesn't create the bug, maybe it triggers it, but not always nor on every device because, I haven't sopped using the same wall charger and the bug haven't returned, the last thing I did was, use my computer to charge my phone for three days, always letting it charge to 100% (unless I have to move from the computer) and the bug didn't happened, then, on a rush I had to use the wall charger, the bug appeared instantly, and then keep charging it with the same charger, two days after that, the bug dissappeared, I made no rom change, nor baseband, nor ril, nor anything, just like that it disappeared, so, I have no way to keep testing, if it ever comes back, I'll make some tests again, but for now, I have nothing to work with, hope this thread help you to get over this bug, at least, for a while, I'll be reading this thread in case you have some trouble with the instructions or so, cheers
UPDATE:
Ok, so I deleted long ago the last backup you told me was not working, and since I went to CM10 from Pengus I haven't had the no USB bug, so, one person asked me for the backup, I just made a new one, (this one is 204 MB on zip, read step 3) and uploaded it to 4Shared and Dropbox, so, remember to read and follow the instructions as they are, hope this time you can restore this backup, and one more thing, this backup was made just after installing it on the phone, so it doesn't have even a gmail account, you have to put yours and update market if you need something from there, ps. dont mind the date of the name of the file, it is innacurate, cheers
I don't have any stock ROM backup that I can flash via CWM, can I use this instead?
http://forum.xda-developers.com/showthread.php?t=1617458
To be honest I don't see a big difference to my post you probably found while searching except that your version is waaaaay more to read.
kohos said:
when dialing the above mentioned 1809#*990# in the Port menu, switching from default AP USB to AP/CP UART gave me life signs.
After switching to AP UART I linked the Unknown device driver to lgusbdiag.inf located in C:/ProgramFiles(x86)/LG United Mobile Driver.
Suddenly it started installing it and is now recognized as: LGE Platform Android USB Device.
Once disconnected I lose USB again, I'm able to recreate the first steps though even in default AP USB mode by now.
Click to expand...
Click to collapse
But that aside I hope you realize that this is not a solving fix at all. All it does is giving people who got a fresh device the chance to flash a custom recovery. That's all. It won't work with any CM ROM and even Stock based ROMs.
Unless you have an early Froyo version flashed you will also have no ADB and it won't be recognized during the NVFlash process rendering it pretty much useless.
Having seen dozens of people having this particular problem where all the super obvious stuff like other cables, other pcs, other drivers etc. did not work, sending it to repair was the only fix I heard of solving this problem to date.
Of course I'm very curious on how you are going to identify the problem. Good luck.
kohos said:
To be honest I don't see a big difference to my post you probably found while searching except that your version is waaaaay more to read.
But that aside I hope you realize that this is not a solving fix at all. All it does is giving people who got a fresh device the chance to flash a custom recovery. That's all. It won't work with any CM ROM and even Stock based ROMs.
Unless you have an early Froyo version flashed you will also have no ADB and it won't be recognized during the NVFlash process rendering it pretty much useless.
Having seen dozens of people having this particular problem where all the super obvious stuff like other cables, other pcs, other drivers etc. did not work, sending it to repair was the only fix I heard of solving this problem to date.
Of course I'm very curious on how you are going to identify the problem. Good luck.
Click to expand...
Click to collapse
I'm extremely sorry, there's one think I missed, give you credit (fixing that right away), I actually found your post on modaco.com, and tried to access to the hidden menu from CM7 with no success, fortunately, I do have an early froyo backup that can be flashed through CWM, the only thing is that is the Telcel stock rom (I don't know if this can work with other O2X devices, I think there should not be problem at all)
About ADB, it work in full with the latest drivers installed and scanning for hardware changes on the computer device manager, It even work entering the S/W update service on the phone (to install a stock rom)
I know that many people have had this issue, I spent a lot of time reading forums and stuff about it, the only post that actually helped me, was yours, so, credit is yours, I did this post to show people what I excactly did (that's why is a lot to read, but I wanted to make it as easy as possible to follow up)
To identify the problem is a long and slow task, so, I'll be making some tests and let you know what I found, right now I have no much time, 'cuz I'm about to start my final exams, so I'll be busy, but as soon as I finish I'll be more dedicated to it, I'll be making hardware and software tests but can't promise anything yet
vanmarek said:
I don't have any stock ROM backup that I can flash via CWM, can I use this instead?
http://forum.xda-developers.com/showthread.php?t=1617458
Click to expand...
Click to collapse
I tried to use that ROM, but couldn't manage to download it (I think it was removed, if you want to give it a shot try to find another flashable stock rom or backup, if not, give me some hours to clean my bakcup and upload it somewhere to let you use it, (it is mexico's telcel stock rom, but it should work)
Well Thanks ocr66 for this wonderfull news. I have the issue with usb connection from long time and i will give a try to your fix. You can post a stock rom here or a link to a rom that works??? In order to instal this fix i could lose the root??? Thank you 4 all!
vladutz9 said:
Well Thanks ocr66 for this wonderfull news. I have the issue with usb connection from long time and i will give a try to your fix. You can post a stock rom here or a link to a rom that works??? In order to instal this fix i could lose the root??? Thank you 4 all!
Click to expand...
Click to collapse
It all depends on what you install, if you manage to install stock rom through CWM or another recovery, yes you will loose root, but will have usb connection so you can root again, later today I'll upload my own froyo stock backup (it's mexican stock for telcel carrier, i think it should work out of méxico, maybe could cause network trouble on other countries, but its just a posibility, the important thing is that you be able to access the hidden menu), this backup I'll upload can be installed through cwm and its already rooted, so its like installing any custom rom, you'll keep your recovery and root
Remember, this is a temporary fix yet 'cuz I still get the bug comming back, maybe its because I am restoring my last working cwm backup, the only thing I haven't tried is clean all, install stock, root, install custom rom, and download again everything, maybe the bug is caused by something on that last cwm backup
I'll let you know as soon as I upload my bakcup
cheers
Well thank you! How i have this issue from one year i learned to live with her, but i could not live without root. So if i will instal a stock rom without root i will be unable to correct the usb connection i will get stuck with stock rom and no root. Will be the end of my phone. In am interesed to gain the usb connection for change the bb, i supose i can be something wrong with my bb 1035.21_20110725 and gingerbread. You can check to change the bb to see if you get again losing usb connection. Cheers and thank you 4 all.
got this after CM10 install
I've only had my phone for 1 day from new and already got this problem.
Rooted with superoneclick
Installed CWM v5.x
Installed CM10 Nightly Nov 13th
Now no USB mode, only charging.
baseband: v10e
RIL: CM10 1106
EDIT UPDATE: Well its working for me again now, I think in my case it was because I was using Linux and CM10.
By going to Settings/Storage then pressing menu button and selecting 'USB computer connection' I was able to change the 'Connect as' option from MTP to Mass storage and it now works.
@tiktok1 Lucky you!!!
@ocr66 Any news about this bug???
vladutz9 said:
@tiktok1 Lucky you!!!
@ocr66 Any news about this bug???
Click to expand...
Click to collapse
Actually yes, I've managed to identify what's triggering the bug at least in my phone, so might be the same for others as well, see the second post
BTW, did you tried already the fix? did you used my stock froyo backup?, if it didn't work, I can make another and upload it
Hi. Looks like I have the same problem with USB as you. Your theory about the wall charger might be correct. Here's my situation:
So, I've got my phone two days ago, bought used, came with a general Sony Ericsson USB charger. It says it outs 850mA at 5.0V (confirmed with a multimeter). The phone is on stock Android 2.2.2, isn't rooted yet. The guy from who I got the phone says that he suffered too with this kind of problem, however he got it working after 2 weeks without the use of the hidden menu. This means, that in those 2 weeks, he might have used a PC or a laptop to charge the phone. I tried the hidden menu port settings, however the only "working" mode is AP UART, but it is not recognizable by the PC, even if I try to link the LG drivers manually. Cycling through the modes did not help. I'll try to charge the phone with my PC, and see if that dose anything.
Details of the phone:
Firmware version: 2.2.2
Baseband: 1035.21_20110218
Kernel: 2.6.32.9-dirty
Build: FRG83G
LGE Version: LGEP990-V10b
Wow. All i can say is wow! Gosh! Just dunno how grateful I am stumbling upon this thread! Kudos to you sir,you just ended my 2 month long frustration about my phone not being able to communicate to my PC. was getting ready to send the phone for service then I read this. I had flashed every GB ROM imaginable from the dev thread with no luck. I am running carburano DM 1.7 now,all I did was to go to the hidden menu,switched one port setting,wait,then voila! PC recognized my phone! Again thanks,great respect to you,and Superskill.
Hi, this is my post to thebgeneral board by accident, didnt even read there was a qanda section lol
It didn't work on my gfs phone unfortunately, notvsure what was wrong.
Maybe I should try stock Rom instead of modded, how long are you guys waiting for the phone to show up?
I downloaded a stock Rom that had been modded.
So I could be sure that I would have cwm in case anything went wrong.
Rom loaded and was able to get into the secret menu.
I will say that under USB connection type there was misspelling where it said:
LG USB adnroid
Not sure if that would affect it.
I selected that item.
Then went to port.
Selected the different options in ordered and waited about 10 seconds on each turn, then pressed find any changes in device manager unplugged and plugged the USB.
Then tried in different orders but with not luck.
Took the battery out and tried holing the vol up down the plugging in USB but to no avail.
Then pressed power and vol down.
The phone tuned on and showed LG sign then switched off.
I tried pressing check any changes as the LG sign came on but nothing.
Then tried nvflash as the LG sign came on but nvflash showed no connection.
Very weird, definitely dead but still charges, doesn't make sense.
Oh well
Ordered an atrix with work and play kit for 68 quid, has a broken digitizer which will cost 20 pound, on average, off ebay.
Thanks for the help though.
May take the 2x apart when new phone comes and see if there's any physical damage on te board.
Sent from my LG-P990 using xda app-developers app
Sent from my LG-P990 using xda app-developers app
mondc1088 said:
Wow. All i can say is wow! Gosh! Just dunno how grateful I am stumbling upon this thread! Kudos to you sir,you just ended my 2 month long frustration about my phone not being able to communicate to my PC. was getting ready to send the phone for service then I read this. I had flashed every GB ROM imaginable from the dev thread with no luck. I am running carburano DM 1.7 now,all I did was to go to the hidden menu,switched one port setting,wait,then voila! PC recognized my phone! Again thanks,great respect to you,and Superskill.
Click to expand...
Click to collapse
Lucky you! I was to in DM 1.7 but when i was in hidden menu i chosing another port, don´t want to save the settings. Anyway congrats!
No luck...
I've used my PC for charging for a week now, still no USB connectivity. I think this might be a hardware issue with me as the phone sometimes says it's charging, but it's actually in my hands with no cable attached. I managed to root the stock 2.2.2 firmware with GingerBreak and installed CM7 with RomManager with a downloaded ZIP on the SD card. Thanks for the tips anyways.
Doctor0710 said:
I've used my PC for charging for a week now, still no USB connectivity. I think this might be a hardware issue with me as the phone sometimes says it's charging, but it's actually in my hands with no cable attached. I managed to root the stock 2.2.2 firmware with GingerBreak and installed CM7 with RomManager with a downloaded ZIP on the SD card. Thanks for the tips anyways.
Click to expand...
Click to collapse
Hello, I'm sorry it took me a while to answer, I've been busy with my finals, did you tired the tutorial I posted? the hidden menu modification? I know that you let your phone charging for a while with your pc, actually, it should've worked but, maybe the problem on your phone actually is something else, 'cuz I haven't had that issue that the phone says it is charging but its not connected to the charger, my brother told me that he have had that same issue but with other phone, he changed the wall charger and that "fixed" it, but I think if you haven't tried the tutorial, give it a shot, try changing to CP UART if your phone's usb is working as it should, your computer should detect a new unknown device, if not, myabe your phone is hardware damaged, hope you can fix your phone soon
cheers
monkeyass said:
Hi, this is my post to thebgeneral board by accident, didnt even read there was a qanda section lol
It didn't work on my gfs phone unfortunately, notvsure what was wrong.
Maybe I should try stock Rom instead of modded, how long are you guys waiting for the phone to show up?
I downloaded a stock Rom that had been modded.
So I could be sure that I would have cwm in case anything went wrong.
Rom loaded and was able to get into the secret menu.
I will say that under USB connection type there was misspelling where it said:
LG USB adnroid
Not sure if that would affect it.
I selected that item.
Then went to port.
Selected the different options in ordered and waited about 10 seconds on each turn, then pressed find any changes in device manager unplugged and plugged the USB.
Then tried in different orders but with not luck.
Took the battery out and tried holing the vol up down the plugging in USB but to no avail.
Then pressed power and vol down.
The phone tuned on and showed LG sign then switched off.
I tried pressing check any changes as the LG sign came on but nothing.
Then tried nvflash as the LG sign came on but nvflash showed no connection.
Very weird, definitely dead but still charges, doesn't make sense.
Oh well
Ordered an atrix with work and play kit for 68 quid, has a broken digitizer which will cost 20 pound, on average, off ebay.
Thanks for the help though.
May take the 2x apart when new phone comes and see if there's any physical damage on te board.
Sent from my LG-P990 using xda app-developers app
Sent from my LG-P990 using xda app-developers app
Click to expand...
Click to collapse
What I did on my phone is exactly what I posted, if your computer haven't detected your phone on CP UART I doubt rebooting will make a change, anyways the most important thing to see if your usb is damaged or not is to try on the hidden menu the option CP UART it almost instantly detect the device, but, not everytime, I once waited there 20 min, so, give it a shot if you want, the stock rom I posted (on second post) is Mexico's Telcel stock rom, rooted, it doesn't delete your cwm recovery nor root, you can give it a try if you want, but read the instructions 'cuz you have to restore the ext3 format of your phone's partition to make it work (it stays on boot loop if you don't restore ext3 format), if the backup doesn't work, let me know to upload a new backup, hope you can fix it
cheers
vladutz9 said:
Lucky you! I was to in DM 1.7 but when i was in hidden menu i chosing another port, don´t want to save the settings. Anyway congrats!
Click to expand...
Click to collapse
Hey did you managed to fix the problem yet? did you tried the bakcup I uploaded? it's Mexico's telcel stock rom, rooted, its made by cwm so it doens't delete your cwm recovery, give it a try if the backup doesn't work, let me know to make a new one and upload it ok?
cheers

[Q] Stuck on LG logo screen

So i factory rested the phone, then installed rom manager from google play and instaled CWM then pressed reboot to recovery and the phone turned off. Now when i want to turn it on it stucks on LG logo, tried all combination (i think so) but it but it shows LG logo then screen turns off. Anybody help?
Edit: I found out that i can turn my phone in SW upgrade and use Smart Flash Tool, but the problem is that none of the drivers are working, i tried about 10 of them, pc cant recognize my LG, anybody help?
Here to help!
Mattas92 said:
So i factory rested the phone, then installed rom manager from google play and instaled CWM then pressed reboot to recovery and the phone turned off. Now when i want to turn it on it stucks on LG logo, tried all combination (i think so) but it but it shows LG logo then screen turns off. Anybody help?
Edit: I found out that i can turn my phone in SW upgrade and use Smart Flash Tool, but the problem is that none of the drivers are working, i tried about 10 of them, pc cant recognize my LG, anybody help?
Click to expand...
Click to collapse
I had this problem like 5 months ago
OK read this and follow the exact guide im doing it personally so that you dont have to search! kk
(for getting your phone working)
1.install the phone drivers from the website ( it might show on the com port thingy then )
2. flash only a gingerbread rom or froyo rom because the ICS rom is locked with a bootloader and will cause the lg logo thing all over again if you flash
3.From this link download the gingerbread rom( download the V20A from venezuela )( http://lg-phone-firmware.com/index.php?id_mod=1 )then use the rom convertor ( go to this link for the guide on how to flash http://forum.xda-developers.com/showthread.php?t=2144577 )
4. if it works, all you have to do is put a rom on your sd and go on with your life
( PS I suggest you try HUEXXX's IZS ROM or Marvel V9 as they both are really stable and works really well)
as for other roms
Dont forget to click the thank button on the corner of this post
Will it work normaly if i flash venezuela rom not baltics (im from baltics)?
Mattas92 said:
Will it work normaly if i flash venezuela rom not baltics (im from baltics)?
Click to expand...
Click to collapse
It will work fine!
Im not from venezuela myself i live in the middle east ( im indian though )
So it will work fine
the guide above was from personal experience my friend!
if anything goes wrong please feel free to ask!
im doing everything what tutorial says, but my pc still cant recognize my phone and smart flash tool cant find it too. Maybe its because windows 8.1?
NOPE
Mattas92 said:
im doing everything what tutorial says, but my pc still cant recognize my phone and smart flash tool cant find it too. Maybe its because windows 8.1?
Click to expand...
Click to collapse
its not because it windows 8.1
MINE IS WINDOWS 8.1
Calm down give me a day ill find a possible solution
Thank you for your help dude
Sorry for double post, but is this possible on lg optimus black? http://forum.xda-developers.com/showpost.php?p=38838927&postcount=7
..hm
Mattas92 said:
Sorry for double post, but is this possible on lg optimus black? http://forum.xda-developers.com/showpost.php?p=38838927&postcount=7
Click to expand...
Click to collapse
possible but not safe!
causes permanent brick if not done well ( i think )
your not detecting problems could be anything!
try reinstalling the drivers all over again
or try another computer!
and also the USB CABLE you are using should be lg ones
and if any lg ones dont work use your OB CABLE!!
REPLY ASAP WITH RESULTS
aaronjgeorge said:
possible but not safe!
causes permanent brick if not done well ( i think )
your not detecting problems could be anything!
try reinstalling the drivers all over again
or try another computer!
and also the USB CABLE you are using should be lg ones
and if any lg ones dont work use your OB CABLE!!
REPLY ASAP WITH RESULTS
Click to expand...
Click to collapse
Tried reinstalling drivers about 20 times;
Tried on another computer still the same;
Tried other (not LG) cable still the same
Today I was at local service center, they said that they cant fix it, so they sent my phone to a better service and they have some kind of box mobile phone fixing tool. Looking forward, that costs 10 to 15 euros. hopefully they fix it.
...
Mattas92 said:
Tried reinstalling drivers about 20 times;
Tried on another computer still the same;
Tried other (not LG) cable still the same
Today I was at local service center, they said that they cant fix it, so they sent my phone to a better service and they have some kind of box mobile phone fixing tool. Looking forward, that costs 10 to 15 euros. hopefully they fix it.
Click to expand...
Click to collapse
GOOD LUCK!
and before you do anything to your phone
read the side effects also!
cheerios
ok thanks next point is a stable rom when i get my phone fixed

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