Help downgrading LG Optimus 2X - LG Optimus 2x

Ok. So I have 4.0.4 official LG rom. I have tried to root the phone... it shows superuser but when i try to get into recovery mode is not working, it shows an android and a bar that is loading but does not get into recovery mode. Now I am trying to downgrade to 2.3.4 but when I try doing that in software update KDZ it saying phone not found. I am doing it this way: pluging in the phone into the PC without the battery and pressing vol down so it gets into update mode, disabled modem in manage got windows enabler... but nothing WHAT CAN I DO?

Hello,
I had the same problem and I solved it using the AIO toolkit -> http://forum.xda-developers.com/showthread.php?t=2020737
You have to revert your partition system to the old one in order to get back to GB/CMxx from ICS
Don't forget the thank meter

Thanks! Problem solved. Got me 4.2.2 CM10

Rodot said:
Hello,
I had the same problem and I solved it using the AIO toolkit -> http://forum.xda-developers.com/showthread.php?t=2020737
You have to revert your partition system to the old one in order to get back to GB/CMxx from ICS
Don't forget the thank meter
Click to expand...
Click to collapse
Hi! I have the same problem and I am quite a noob. Can you please explain more detailed? Did you use one of the listed features? I would be really grateful for your help

Related

[Q] Help- Need help to root lg optimus black v20E

hi guys im running on gingerbread 2.3.4 V20E and i cant root my device. iv tried unlock root, gingerbreak superone click but doesn't work. also i gave tried blackjack v1.2 but i didnt get proper root access. HELP! thanks for reading!
ashvinfroyo said:
hi guys im running on gingerbread 2.3.4 V20E and i cant root my device. iv tried unlock root, gingerbreak superone click but doesn't work. also i gave tried blackjack v1.2 but i didnt get proper root access. HELP! thanks for reading!
Click to expand...
Click to collapse
No exploit will work... LG fixed that.. damn lg
Anyways why did not you search before, there are a no of threads regarding rooting.
Use cwm injection method and flash your rom again. http://forum.xda-developers.com/showthread.php?t=1512203
By the way you should try other custom roms here as well rather than stock.
A future reference and best rooting technique http://tinyurl.com/6t9vm27:thumbup:
Sent from my LG-P970 using XDA
First of all, since you're new to this board please read the Welcome To The LG Optimus Black Section..... (Please Read If You're New)
Also, read the [HOW TO]The Big N00B how-to! since it will answer most of your questions.
Second, if you would have searched you would have found your answer already, but i'll help you (i'm in a good mood today too ).
You can find an already rooted v20E firmware HERE.
Just follow the steps from THIS post but instead of using the V20B firmware files use the ones from the V20E firmware (i've already given the link to the V20E above).
Good luck and happy modding
Can't wipe data/factory reset
hello i just flashed my optimus black with smartflash as instructed i boot into recovery but however when i select wipe data there is no "yes" option to select i can only select no! HELP
Are you on cwm touch??? If you are, then yes option will be below the no. Scroll down with your volume rocker...
Sent from my LG-P970 using XDA
wow it worked!
thanks man it worked! many thanks!
ashvinfroyo said:
thanks man it worked! many thanks!
Click to expand...
Click to collapse
You are welcome ... by the way touch scrolling is also available... :-D
Sent from my LG-P970 using XDA
Smartflashtool has stopped working
Hi, my OB also has v20E firmware installed by default. I 've tried to root the phone by using smartflashtool method that has already been described above. However, whenever I tried to root my device, it always ended up in failures. The smartflashtool program either showed "Timeout error is occurred" (sometimes) up or "Smartflashtool MFC has stopped working" (most of the times) at various points in the rooting progress
I used all of the programs mentioned on the posts above but still no luck
- Installed LGSmartPhone_ModemlinkDUNDrive_WHQL_ML_Ver_1.0
- Installed LGWindowsMobile_USBDriver_WHQL_ML_Ver_1.0
- Installed LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3.6
- [patched]V20E_SEA.bin
- V20e_SEA.fls
And currently, my phone cannot boot into the main phone screen (it can only display LG logo at best). Please help!
b3aver said:
Hi, my OB also has v20E firmware installed by default. I 've tried to root the phone by using smartflashtool method that has already been described above. However, whenever I tried to root my device, it always ended up in failures. The smartflashtool program either showed "Timeout error is occurred" (sometimes) up or "Smartflashtool MFC has stopped working" (most of the times) at various points in the rooting progress
I used all of the programs mentioned on the posts above but still no luck
- Installed LGSmartPhone_ModemlinkDUNDrive_WHQL_ML_Ver_1.0
- Installed LGWindowsMobile_USBDriver_WHQL_ML_Ver_1.0
- Installed LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3.6
- [patched]V20E_SEA.bin
- V20e_SEA.fls
And currently, my phone cannot boot into the main phone screen (it can only display LG logo at best). Please help!
Click to expand...
Click to collapse
hi,
sure, you haven't root your device !
phone will reboot recovery
13. Wipe all data/factiry reset
14. flash Superuser.zip " for root device
15. Reboot system now
superuser.zip download : http://www.mediafire.com/?a1re78800owv3aj Flash with cmw touch in recovery
run smartflashtool with rights administrator also...
use this patched rom => http://forum.xda-developers.com/showpost.php?p=23833005&postcount=186
YkZ_1967 said:
hi,
sure, you haven't root your device !
phone will reboot recovery
13. Wipe all data/factiry reset
14. flash Superuser.zip " for root device
15. Reboot system now
Hi, thanks for your reply. Unfortunately, I haven't gotten to the point where the phone was rooted successfully (100%), whenever I tried to run B_SmartFlashTool_Extern.exe, it always ended up in error. What did I do wrong? I've used the appropriate files and installer, haven't I? Now, I'm totally freaked out because my phone has run out of battery and doesn't show any sign of charging even though I've connected the charger
Oh by the way, I've already used the patch rom for V20e, but still no avail and already tried running the program with admin rights
Click to expand...
Click to collapse
are you able to enter in S/W update mode now ?
key volume + and usb plugged
or use r&dtt method => http://forum.xda-developers.com/showthread.php?t=1111771
Ok, I'm totally freaked out now. I can't even start the S/W update mode anymore although I've been charging the phone for about 15 minutes. No, I don't know how to use r&dtt method, tried to read the post but I don't which one is r&dtt method. Can you help me? I've checked the charger and it felt warm after 15 minutes of charging though
b3aver said:
Ok, I'm totally freaked out now. I can't even start the S/W update mode anymore although I've been charging the phone for about 15 minutes. No, I don't know how to use r&dtt method, tried to read the post but I don't which one is r&dtt method. Can you help me? I've checked the charger and it felt warm after 15 minutes of charging though
Click to expand...
Click to collapse
remove the battery and leave five minutes without
phone must be on power off
plug usb cable and press volume keys+
say me if the phone can be enter in S/W update mode, i' m watching for LGFlashTool.exe, never used again, always unbrick my Ob with smartflash tools method
Question about root
Hi, I just root rights to V20O not only to root recovery, how to do it. Recovery mode without dissolving it.

[Q] Semi-bricked / Smartflash tool not working

Hi
I'm helping out a friend, which O2X I have rooted and flashed WIUI on to (I previously owned one myself too)
For some reason the phone started to get hot after a while and used up the battery fast, until one day where he couldn't even turn it on again.
Now, he has been trying to fix it himself with NVflash, but no luck, so now its up to me and you guys.
I have used the smartflash tool and flashed the EURO OPEN stock ROM and everything went succesfull, but when the phone reboots, the LG logo appears, and it bootloops.
I tried both with battery and no battery in, but still no cigar.
Any suggestions what I should try next?
PS: If I try to turn on the phone normally, nothing happens. not even a blink from the screen, but I can get into S/W mode and APX
Try lg update tool, choose recover as option, then choose imei as entrance
SuperSkill said:
Try lg update tool, choose recover as option, then choose imei as entrance
Click to expand...
Click to collapse
EDIT: The software says the update is not compatible (dunno if translation is correct, but you get the point)
Update is aborted :/
No more suggestions on what to do?
Tried:
NVflash
Smartflash (Flashed EURO OPEN rom)
LG Update tool (recover function)
The phone still won't boot.
Smartflash is the only solution like you said that the phone can boot in s/w mode try to dig some answer in smartflash thread or search in google i know you can find some answer there
Sent from my Optimus 2X using xda premium
Assuming you have carried out the procedures correctly, looks like this device is actually defective. Probably not what you want to hear, I know, but...
Before giving up completely, you can NVFlash it again (using the original 10C NVFlash from Modaco) and post the log here. Wouldn't get my hopes up though.

[SOLVED][ERROR] Device stuck on boot! Error: Boot Image Signature

Guys,
I'm relatively new to flashing recovery and ROMs..
So, sorry if this is a noob question..
I really need urgent help!
I am on V20a (ESA-XXX) and have successfully rooted my phone.
I tried installing CWM using this method..
http://forum.xda-developers.com/showthread.php?t=2180138
I used the unsecure boot provided by gordon0001
http://forum.xda-developers.com/showthread.php?p=39918805&highlight=unsecure#post39918805
After i restarted my phone, it got stuck at boot!!
Its gives the following error and turns of in 5 seconds..
[LG-Security] Error: Boot Image Signature!
The phone doesn't start and does not go into recovery either..
The phone is not even recognised by my PC.. keeps restarting (to error screen) if i connect to pc..
Please, someone help me.. I'm really scared.. I don't want to lose my phone.. :crying:
I read a similar prob, but no solution found..
http://forum.xda-developers.com/showthread.php?t=2223697
PLEASE HELP!!
SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )
Dude, reflashing your phone should work. As long as SW mode is still accessible, your phone isn't dead yet. Follow the instructions on this post http://forum.xda-developers.com/showthread.php?p=35971349 Be freaking sure all necessary drivers are properly installed.
Or you can put your phone in recovery mode (power + vol +) and reinstall the stock rom using recovery LG tools providing your Internet connection is fast and stable
Sent from my LG-P880 using Tapatalk 2
hey dude, i have flashed 7 times exactly since this morning only. and i have gotten that error 3 times of those 7. so it should not be a problem
Thanks!
After a few attempts, was able to go to the s/w upgrade mode.. (power + vol(-) )
Reflashed .kdz and it's all good.. (had to root again)
Actually, i was freaked out more coz it's my new phone and i didn't find others with the problem..
I hope that this thread would help if anyone faces a similar problem in the future..
Thanks for the prompt response, guys!
TechnoBraker said:
After a few attempts, was able to go to the s/w upgrade mode.. (power + vol(-) )
Reflashed .kdz and it's all good.. (had to root again)
Actually, i was freaked out more coz it's my new phone and i didn't find others with the problem..
I hope that this thread would help if anyone faces a similar problem in the future..
Thanks for the prompt response, guys!
Click to expand...
Click to collapse
You don't read a lot, right?...
If I had 100€ for each user that had that same problem...
(thinking about 1€, hummm?... of course not, 100's better)
TechnoBraker said:
Guys,
I'm relatively new to flashing recovery and ROMs..
So, sorry if this is a noob question..
I really need urgent help!
I am on V20a (ESA-XXX) and have successfully rooted my phone.
I tried installing CWM using this method..
http://forum.xda-developers.com/showthread.php?t=2180138
I used the unsecure boot provided by gordon0001
http://forum.xda-developers.com/showthread.php?p=39918805&highlight=unsecure#post39918805
After i restarted my phone, it got stuck at boot!!
Its gives the following error and turns of in 5 seconds..
[LG-Security] Error: Boot Image Signature!
The phone doesn't start and does not go into recovery either..
The phone is not even recognised by my PC.. keeps restarting (to error screen) if i connect to pc..
Please, someone help me.. I'm really scared.. I don't want to lose my phone.. :crying:
I read a similar prob, but no solution found..
http://forum.xda-developers.com/showthread.php?t=2223697
PLEASE HELP!!
SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )
Click to expand...
Click to collapse
But WHY AND HOW did it happen? have you flashed a custom rom now without errors?
GeBoe said:
But WHY AND HOW did it happen? have you flashed a custom rom now without errors?
Click to expand...
Click to collapse
You needed to unlock bootloader first, either "adb reboot oem-unlock" or download terminal emulator, root the phone and type:
su
echo 40000000c8 > /sys/firmware/fuse/odm_reserved
Sent from my rooted P880
I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.
askinkoc said:
I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.
Click to expand...
Click to collapse
And once again:
flashing stock is not at all dangerous. it will not brick your device or something else.
Sometimes you even have to re-stock your phone.
Stock is safe!
askinkoc said:
I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.
Click to expand...
Click to collapse
haha, flashing the stock rom back can never be a problem..
that is the only rom which inherently supposed to be problem-free!
@non4 said:
You needed to unlock bootloader first, either "adb reboot oem-unlock" or download terminal emulator, root the phone and type:
su
echo 40000000c8 > /sys/firmware/fuse/odm_reserved
Sent from my rooted P880
Click to expand...
Click to collapse
just tried this ^^^ worked thanks
Had the exact same problem as TechnoBraker however if you held the power button as the phone turned to "power save" and you timed it perfectly it would start normally and as long as i didnt try to go into recovery mode it was fine
Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://forum.xda-developers.com/showthread.php?t=2298420 but I cannot entry after that in Software Update ( Volume - and Power button) and not even with (Volume + Home and Power Button). I get this error [LGE _SECURITY]error: boot image signature
[LGE _SECURITY]5 seconds after power is turned off for power saving
My phone start very well, I can talk from him but I can not make Factory Reset and flash back the stock rom.
Sorry for my english and I hope someone can help me!
Thank you!
alexxutzu said:
Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://forum.xda-developers.com/showthread.php?t=2298420 but I cannot entry after that in Software Update ( Volume - and Power button) and not even with (Volume + Home and Power Button). I get this error [LGE _SECURITY]error: boot image signature
[LGE _SECURITY]5 seconds after power is turned off for power saving
My phone start very well, I can talk from him but I can not make Factory Reset and flash back the stock rom.
Sorry for my english and I hope someone can help me!
Thank you!
Click to expand...
Click to collapse
you installed cwm without unlocking bootloader. re-flash 20a/20b (jellybean 4.1.2) kdz, then unlock your bootloader, then install any custom recovery you want/need
Have i go bak to JB anytime?
Flying_Bear said:
you installed cwm without unlocking bootloader. re-flash 20a/20b (jellybean 4.1.2) kdz, then unlock your bootloader, then install any custom recovery you want/need
Click to expand...
Click to collapse
HEy
I have a question:
Have I flash to JB back anyway or can I only Unlock my BL and then it will work?
Sry my English is very bad
mivoe99 said:
HEy
I have a question:
Have I flash to JB back anyway or can I only Unlock my BL and then it will work?
Sry my English is very bad
Click to expand...
Click to collapse
Bootloader unlocking is only available if you're on JB. If your boot image is faulty you need to revert back to official JB.
Sent from my LG-P880 using XDA Premium 4 mobile app
Ok, but I haven't installed a cousom ROM
Omario-242 said:
Bootloader unlocking is only available if you're on JB. If your boot image is faulty you need to revert back to official JB.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I havent' installed a cusotm ROM yet. I have only installed CWM with ROM Manager, but i have already tried to delete the CWM I want to flash it manual.
My ROM is the normal LG P880 ROM JB.
How or have I go back to the normal JB?
Sry for my English I'm german
mivoe99 said:
I havent' installed a cusotm ROM yet. I have only installed CWM with ROM Manager, but i have already tried to delete the CWM I want to flash it manual.
My ROM is the normal LG P880 ROM JB.
How or have I go back to the normal JB?
Sry for my English I'm german
Click to expand...
Click to collapse
German here too
So if I understood you right, you tried to install CWM without unlocking your boot loader? So now you got a boot image error? I'd suggest to try LG Mobile Support Tool and flash V20A/V20B and then unlock Boot loader. Even if you're on "official JB" as of now, installing CWM without unlocked bootloader screwed your boot image and there's no way to do anything without flashing back a kdz.
Sent from my LG-P880 using XDA Premium 4 mobile app
LG Mobil Support Tool doesn't work
Omario-242 said:
German here too
So if I understood you right, you tried to install CWM without unlocking your boot loader? So now you got a boot image error? I'd suggest to try LG Mobile Support Tool and flash V20A/V20B and then unlock Boot loader. Even if you're on "official JB" as of now, installing CWM without unlocked bootloader screwed your boot image and there's no way to do anything without flashing back a kdz.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hey,
I have tried to do the Update to the Firmware by LG Mobile Support Tool but there is a Error every try. I have tried it about ten times but the Update fails every time. What can I do now? :/
There is no Error Code or something.
Can help a factory reset there?
Or should i falsh the Original Recovery with the All-in-One toolkit?
mivoe99 said:
Hey,
I have tried to do the Update to the Firmware by LG Mobile Support Tool but there is a Error every try. I have tried it about ten times but the Update fails every time. What can I do now? :/
There is no Error Code or something.
Can help a factory reset there?
Or should i falsh the Original Recovery with the All-in-One toolkit?
Click to expand...
Click to collapse
Could be due to wrong drivers. Reinstall them and try again.
Sent from my LG-P880 using XDA Premium 4 mobile app
Reinstalled Drivers
Omario-242 said:
Could be due to wrong drivers. Reinstall them and try again.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hey,
I have reinstalled the drivers for my device, but the installation failed again.
What can I do else? :/

[Q] Root/bootloader problem

Hello,
I tried to root my P990 with option 3 from All-In-One Toolkit. All went well until it asked me to change to a new ICS bootloader. I choose the second option ICS-cwm-6.0.2.5.img. It went well until it wanted to send ics-bootloader.bin to the phone. It got stuck at 655360/891024 bytes sent. Now my phone won't start. What should I do?
username10000 said:
Hello,
I tried to root my P990 with option 3 from All-In-One Toolkit. All went well until it asked me to change to a new ICS bootloader. I choose the second option ICS-cwm-6.0.2.5.img. It went well until it wanted to send ics-bootloader.bin to the phone. It got stuck at 655360/891024 bytes sent. Now my phone won't start. What should I do?
Click to expand...
Click to collapse
Use AIO P990 TOOL that is in the Android Develpment, there is an option to change to GB/ICS layout , try it, and you will have your phone running again!
MrAlez said:
Use AIO P990 TOOL that is in the Android Develpment, there is an option to change to GB/ICS layout , try it, and you will have your phone running again!
Click to expand...
Click to collapse
I tried it but I still get errors. I tried all 3 options from the ICS layout. I even tried the GB versions.
I also forgot to mention that I have android 4.0(V30b).
username10000 said:
I tried it but I still get errors. I tried all 3 options from the ICS layout. I even tried the GB versions.
I also forgot to mention that I have android 4.0(V30b).
Click to expand...
Click to collapse
have you try installing a OFFICIAL STOCK FIRMWARE? after a you change the layout you have to FLASH your device
MrAlez said:
have you try installing a OFFICIAL STOCK FIRMWARE? after a you change the layout you have to FLASH your device
Click to expand...
Click to collapse
But how can I install a official stock firmware? I cannot open my phone. I can only enter in APX mode.
EDIT:
I managed to complete the layout change, but the phone still doesn't turn on. I tried to reinstall the stock rom with SmartFlash but it gave me an error at some point.
username10000 said:
But how can I install a official stock firmware? I cannot open my phone. I can only enter in APX mode.
EDIT:
I managed to complete the layout change, but the phone still doesn't turn on. I tried to reinstall the stock rom with SmartFlash but it gave me an error at some point.
Click to expand...
Click to collapse
search for a KDZ GB file if you changed to the OLD Layout, then use AIO to restore the KDZ and follow all the instruction, then you will have your phone with the stock rom
MrAlez said:
search for a KDZ GB file if you changed to the OLD Layout, then use AIO to restore the KDZ and follow all the instruction, then you will have your phone with the stock rom
Click to expand...
Click to collapse
I have the new layout. I tried to restore the KDZ with the off-line LG tool but it kept saying that to connect the phone to the computer. I also tried with the SmartFlash tool but it kept timing out.
EDIT:
I did it. Thanks for the help.
username10000 said:
I have the new layout. I tried to restore the KDZ with the off-line LG tool but it kept saying that to connect the phone to the computer. I also tried with the SmartFlash tool but it kept timing out.
EDIT:
I did it. Thanks for the help.
Click to expand...
Click to collapse
No problem mate! I'm Glad i helped you !

[Q] Bricked? S/W upgrading please wait.....

I gave my phone to my son, cause i got a new one. he decided to put it back on stock firmware and now its saying: S/W upgrading please wait while upgrading.
I was running on TonyP JB without problems. Idid a recovery to ics with the ICS-cwm-6.0.2.5. This was also running fine.
My son tried to update to stock firmware with the official lg update tool and emergency repair. Now its stuck on the updating screen.
I tried to reinstall the new bootloader --> succeeded
Install the recovery (ICS-cwm-6.0.2.5) --> succeeded
above 2 things were done with the AIO toolkit v5
When i put the device on the same message appears?
Anyone a solution?
Thanks in advance
mavds72 said:
............
I tried to reinstall the new bootloader --> succeeded
Install the recovery (ICS-cwm-6.0.2.5) --> succeeded
above 2 things were done with the AIO toolkit v5
When i put the device on the same message appears?
Anyone a solution?
Thanks in advance
Click to expand...
Click to collapse
May be a silly question, but did you flash a ROM after finally doing the above that I quoted
owais40 said:
May be a silly question, but did you flash a ROM after finally doing the above that I quoted
Click to expand...
Click to collapse
Yes, i tried flashing a rom. Without result, keeps saying the s/w upgrade, please wait while upgrading.
Also tried smartflashing with v30a, no result.
I can install the new bootloader an the ics partitition size.
I also tried a full restore ROM and Data (Kernel, System, Data), no result
mavds72 said:
Yes, i tried flashing a rom. Without result, keeps saying the s/w upgrade, please wait while upgrading.
Also tried smartflashing with v30a, no result.
I can install the new bootloader an the ics partitition size.
I also tried a full restore ROM and Data (Kernel, System, Data), no result
Click to expand...
Click to collapse
Looks like you are on old bootloader but not completed the full flashing....
I think it is better to do a nvflash .....download the nvflash tool AIOT or progmaq nvflash tool....
Be aware that you will loose all the personal data.
I got the software upgrade screen once on stock unrooted Froyo. But that was due to my pressing the Volume key (I don't remember which one-most probably Volume Up) simultaneously when pressing the Power On key at start up. Are you doing anything similar.
Got the phone reset!!!
Used option 4 in the AIO toolkit and chose the for option 4. After this i flashed to new bootloader, and used option 1 in the tool to recover all.

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