Database Develop

problem in updating

hi
i was updating my phone with standard method with lg program.. (without downloading kdz file separately)
but an error occurred in 15% , " ..
"problem communication between cell and phone"
and my phone has locked in s/w upgrade mod and don't turn on.. even if i put the battery off and insert it again it turn on , in s/w upgrade mod...
please help..

If it's still at 15 % it shouldnt even have started flashing U are lucky so to say
Just pull out USB and battery, wait a few seconds and restart. Then try to install the latest drivers, maybe run it as admin or another PC if available.
If it's stuck in bootloop, try emergency recovery in B2C tool (LG update tool), or read in my noob how to, how to unbrick devices.
Also this thread needs to be in Q&A

I was using 64bit PC and had the same problem then I used another PC and the problem was gone

Had the same problem. Resolved using emergency recovery in LG tool, but using another pc.
Sent from my LG-P970 using XDA

[Q] USB Device not recognized

Hello everybody,
I've got a problem with my optimus black.
I flash this ROM http://forum.xda-developers.com/showthread.php?t=1984246, but I'm not satisfied of it and I'm want to reflash the V20N with smartflash tool.
But when I put my phone in S/W Upgrade mode my windows said USB Device not recognized.
I've done this twice:
- install/uninstall usb driver and LG Pc suite
- change usb cable
- change usb port
- change ROM
Nothing work I thing that my bootloader is corrupt because it's modified in the V28c.
Thanks for helping me

just boot ur phone in software mode den it will recognize usb in smart tool flash..
Sent from my LG-P970 using xda app-developers app

redgolum said:
Hello everybody,
I've got a problem with my optimus black.
I flash this ROM http://forum.xda-developers.com/showthread.php?t=1984246, but I'm not satisfied of it and I'm want to reflash the V20N with smartflash tool.
But when I put my phone in S/W Upgrade mode my windows said USB Device not recognized.
I've done this twice:
- install/uninstall usb driver and LG Pc suite
- change usb cable
- change usb port
- change ROM
Nothing work I thing that my bootloader is corrupt because it's modified in the V28c.
Thanks for helping me
Click to expand...
Click to collapse
What version of Windows?
What version of USB Drivers? Try newer drivers.
Bootloader isn't be changed by flashing ROMs in CWM. ROMs only need to change from boot partition and upwards since thats all they need to change.
Sent from my LG-P970

nothing new
SamBG said:
just boot ur phone in software mode den it will recognize usb in smart tool flash..
Sent from my LG-P970 using xda app-developers app
Click to expand...
Click to collapse
What do you mean by software mode ? You mean when the phone is wake up and i'm on Lg Home ? Because when I do it smartflash doesn't find my phone, but windows yes. I tried also to use the SOS recovery mode of B2C but it said that my software version was up to date so it did nothing.
xonar_ said:
What version of Windows?
What version of USB Drivers? Try newer drivers.
Bootloader isn't be changed by flashing ROMs in CWM. ROMs only need to change from boot partition and upwards since thats all they need to change.
Sent from my LG-P970
Click to expand...
Click to collapse
I tried on windows 8 and 7. On twice I downloaded the newest driver 3.7.
I think a problem of bootloader because I flash the old version of V28c, with the .bin and .fls which had CMW inside, It was befor they release the .zip version. It's rewrite the bootloader no ?. And also because my phone doesn't wake up when I push on power button on the V28c, V20G, and CM10. I can only flash it because of rom manager and nandroid backup.
Thanks for help

Solved
After 2 day on this @"#[email protected]# phone, I find a solution work only on widows 7:
With the usb recognition I succed with this protocole,
1) Uninstall the Lg driver
2) Install the driver with B2C
3) Put the phone in S/W mode with the battery windows will say that it's not recognized,
4) Unplug the phone It will stay on S/W mode
5) Reboot Windows 7, and as soon as the desktop finish to load plug your phone
And miracle it's work. Sometime you need to do it 2,3, or 10 times.
Concerning the power bouton it still desn't work on V10A, V20N.... So I think it's broken, so I will exchange it with my operator.
Thank a lot for people who gave me some time.

redgolum said:
After 2 day on this @"#[email protected]# phone, I find a solution work only on widows 7:
With the usb recognition I succed with this protocole,
1) Uninstall the Lg driver
2) Install the driver with B2C
3) Put the phone in S/W mode with the battery windows will say that it's not recognized,
4) Unplug the phone It will stay on S/W mode
5) Reboot Windows 7, and as soon as the desktop finish to load plug your phone
And miracle it's work. Sometime you need to do it 2,3, or 10 times.
Concerning the power bouton it still desn't work on V10A, V20N.... So I think it's broken, so I will exchange it with my operator.
Thank a lot for people who gave me some time.
Click to expand...
Click to collapse
hey no need to restart ur windows 7 just after connecting the phone go in s/w mode...the tool will automatically detect the usb in sumtym...
Sent from my LG-P970 using xda app-developers app

Update failed - black screen!

I tried to update my LG P880 with LGMobile support tool yesterday.
After connecting the phone, I clicked on Start updating. A window popped up, telling me that it was downloading.
When it came to the update part, it lost connection with the phone. I did exactly as it said I should do (unplug, take out battery and put in in again, turn on the phone and connect it to the pc), and it restarted with the updating.
On about the same point as last time, the pc lost the connection with the phone. I did the same as last time, but now, the phone just doesn't boots into the S/W update screen.
The phone is NOT booting, NOT working to flash kdz, and it is NOT detectet as a phone, neither by the pc nor the LGMobile support tool, but my pc detects a device called APX when I connect the phone to the pc.
What can I do? And what is wrong?

Do this http://forum.xda-developers.com/showthread.php?t=2069723

erst said:
I tried to update my LG P880 with LGMobile support tool yesterday.
After connecting the phone, I clicked on Start updating. A window popped up, telling me that it was downloading.
When it came to the update part, it lost connection with the phone. I did exactly as it said I should do (unplug, take out battery and put in in again, turn on the phone and connect it to the pc), and it restarted with the updating.
On about the same point as last time, the pc lost the connection with the phone. I did the same as last time, but now, the phone just doesn't boots into the S/W update screen.
My pc detects a device called APX when I connect it to the pc, but the LGMobile support tool doesn't recognize the phone.
What can I do? And what is wrong?
Click to expand...
Click to collapse
LGMobile support tool needs the phone to be in normal mode (generaly...).
No SW or other, just turn ON your phone and connect it to PC.

Stanley- said:
Do this http://forum.xda-developers.com/showthread.php?t=2069723
Click to expand...
Click to collapse
When I try to connect the phone, by pressing vol down, I am not getting the S/W Upgrade screen.

erst said:
When I try to connect the phone, by pressing vol down, I am not getting the S/W Upgrade screen.
Click to expand...
Click to collapse
Take out the battery, wait 30 sec. and put it back, press vol- and connect to PC while pressing.

Nothing is working
I don't get the SW upgrade screen when connecting to PC, the phone is an "Unknown device" og named APX under device manager, and the KDZ program cannot find the device.
Is it any other tings I can try?

so if its apx, you can simple flash it via APX mode with nvflash, right ?
(i remember when i rooting my Optimus 2X via APX , that flashed prerooted system.img... so you can try this method)

erst said:
Nothing is working
I don't get the SW upgrade screen when connecting to PC, the phone is an "Unknown device" og named APX under device manager, and the KDZ program cannot find the device.
Is it any other tings I can try?
Click to expand...
Click to collapse
Out of ideas... you can try to use the official lgmobile tool and use the emergency mode to recover it...

mmm273 said:
so if its apx, you can simple flash it via APX mode with nvflash, right ?
(i remember when i rooting my Optimus 2X via APX , that flashed prerooted system.img... so you can try this method)
Click to expand...
Click to collapse
Do you have a link to a guide or something?
RuedasLocas said:
Out of ideas... you can try to use the official lgmobile tool and use the emergency mode to recover it...
Click to expand...
Click to collapse
No. That just leads me to the LG Mobile Support tool, and it can't do anything.

Did you try to get SW upgrade with battery in? (I had the same problem)

Yes.
I have tried both with the battry in the phone and taken it out

erst said:
Yes.
I have tried both with the battry in the phone and taken it out
Click to expand...
Click to collapse
So what happened with your phone- do u get lg icon and charging indicator when u connect phone?
did u try lg flash tool - i know it needs usb serial port but just try and after all ports ready disconnect phone for 3-5 sec and reconnect -maybe the tool will feel it this way - i'm trying to get manual copy of of that lge usb serial port driver but its not working well on win7 64 i think it'll be easier on xp- if so try to update this APX driver to lge cdma usb serial manually and tryflash tool on it
also the flash tool has board dl option u might try
when connecting phone turned off here i can get some adbs drivers one of them is adb anroidnet usb serial port - the problem is when charging note dissapear(display turned off) its gone and i've to repress power button normal press to get it again

future81 said:
So what happened with your phone- do u get lg icon and charging indicator when u connect phone?
Click to expand...
Click to collapse
I got nothing when I plugged it in.
Anyway, I have sent it in to the place I bought it from, to get a new one.
Thanks for all the help you have given me here, but you don't need to try to help me more

[Q] LG P970H S/W Screen

Well My sister and her boyfriend were trying something whit her phone, I dont have a clue what the hell they were trying, at the end of the day, she comes to me with her LG P970H with the screen S/W Upgrade please wait while upgrading.
I try to Connect the Phone to the PC with the battery and The Pc makes a Sound and says that the USB is not recognized.
I connect the Phone without Battery And the same happens, Sound and not recognized.
Connect Pressing the Vol - , Same happens
Connect Pressing the Vol + Same Happens
Connect Pressing the both buttons with and without the battery Same Happens.
Allright then its the drivers, I go Ahead and download the Lasted Usb Drivers from LG, Try again and nothing new happen.
Download some Old Usb Drivers, Same thing nothing new happens.
Why and When does the S/W upgrade Please wait while upgrading screen appears. I think I can install another OS or make a Hard reset on the Phone if i can get the PC to Detect it. Its not the Cable and its not the PC. Tried 3 diferent cables and 2 pcs and a Macbookpro. I live in mexico and im phone company its TELCEL if that helps.
It appears as soon as i turn on the phone.
PD: please if you know what im dealing with , write the answer for dumb people like me, its hard to know what you are talking about when using names like ST, KDZ and stuff and english its not my mother languaje so dumb it for me. THX!

You must read this.
And you need the bin and fls from KDZ to extract and root your device(if you want it rooted). Since here you should look for yourself.
A soft reset is keep pushing Vol+ + Power for 5 secs.

Mexickano said:
You must read this.
And you need the bin and fls from KDZ to extract and root your device(if you want it rooted). Since here you should look for yourself.
A soft reset is keep pushing Vol+ + Power for 5 secs.
Click to expand...
Click to collapse
That wont Work, I already tried the SF, and it wont detect the Phone, Theres no Comunication Driver.

chulex67 said:
That wont Work, I already tried the SF, and it wont detect the Phone, Theres no Comunication Driver.
Click to expand...
Click to collapse
Ok, the phone was rooted?, Did you tried the soft reset?, Have you removed the battery and turn it off by 5 mins.(not necessary 5 mins but just an aproximate)?

Mexickano said:
Ok, the phone was rooted?, Did you tried the soft reset?, Have you removed the battery and turn it off by 5 mins.(not necessary 5 mins but just an aproximate)?
Click to expand...
Click to collapse
I think the phone was rooted i really dont know i think they were trying to update the system. I tried the Soft Reset Nothing happens, I think its not charging anymore it will only turn on when i connect the Usb cable. I tried removing the battery for 10 mins and tried again all steps. My Problem its that the pc Detects that theres an Usb, but it wont recognize it.
After i plug in the usb cable to the phone and i disconect it, it will remain with S/W upgrade screen for a few seconds before turning itself off. I cant turn it on by the power button.

chulex67 said:
I think the phone was rooted i really dont know i think they were trying to update the system. I tried the Soft Reset Nothing happens, I think its not charging anymore it will only turn on when i connect the Usb cable. I tried removing the battery for 10 mins and tried again all steps. My Problem its that the pc Detects that theres an Usb, but it wont recognize it.
After i plug in the usb cable to the phone and i disconect it, it will remain with S/W upgrade screen for a few seconds before turning itself off. I cant turn it on by the power button.
Click to expand...
Click to collapse
And sft does not work? Eventhough your phone is in SW mode already?
Sent from my LG-P760 using xda app-developers app

N00BY0815 said:
And sft does not work? Eventhough your phone is in SW mode already?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
Yeah, I mean, the only freaking thing that wont work its that my pc and laptop detect when i connect the Cable to the phone, but it Wont Recognize The Usb and when i enter the SFT theres no Communication Driver. Like i said i have downloaded old and new ones Usb Drivers for the LG but it still wont detect it.

chulex67 said:
Yeah, I mean, the only freaking thing that wont work its that my pc and laptop detect when i connect the Cable to the phone, but it Wont Recognize The Usb and when i enter the SFT theres no Communication Driver. Like i said i have downloaded old and new ones Usb Drivers for the LG but it still wont detect it.
Click to expand...
Click to collapse
And if you connect it to the PC normally?
Does your device manager show nothing at all, or does it maybe show unknown devices and you only have to install the drivers manually?
Sent from my LG-P760 using xda app-developers app

N00BY0815 said:
And if you connect it to the PC normally?
Does your device manager show nothing at all, or does it maybe show unknown devices and you only have to install the drivers manually?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
I had similar Problem when using a 64bit-os. if so, try to reboot with disabled check for Driver-signature.
Just press F8 during bootup. if you get a promt fo selecting boot-device, press enter and quickly hit F8 again.
when System is booted remove the Batterie, press and hold vol+ and connect to usb (Batterie is still removed)
now my OB was detected with S/W Upgrade Mode

N00BY0815 said:
And if you connect it to the PC normally?
Does your device manager show nothing at all, or does it maybe show unknown devices and you only have to install the drivers manually?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
It says Usb Device Not Recognized, Unknown Device, One of the Usb Devices has Malfunctioned and Windows Does not Recognize it.
I have tried to Install Usb Drivers and everything and The pc Still Recognize the Phone. The SFT has no comunication Device because the pc its not recognizing the usb so i cant do ****. xD

Z3Rr0_C0ol said:
I had similar Problem when using a 64bit-os. if so, try to reboot with disabled check for Driver-signature.
Just press F8 during bootup. if you get a promt fo selecting boot-device, press enter and quickly hit F8 again.
when System is booted remove the Batterie, press and hold vol+ and connect to usb (Batterie is still removed)
now my OB was detected with S/W Upgrade Mode
Click to expand...
Click to collapse
Nope, Didnt work i even uninstalled the Drivers and Reinstalled both old and new usb drivers for the phone and rebooted each time to see if it worked. Same problem. Dont know if this is important but the S/W update screen appears without pressing the Vol+ or Vol - or both.

chulex67 said:
Nope, Didnt work i even uninstalled the Drivers and Reinstalled both old and new usb drivers for the phone and rebooted each time to see if it worked. ...
Click to expand...
Click to collapse
Are You sure you disabled Driver Signature Enforcement.
this must be done every reboot you do or your phone will not be recognized in S/W Upgrade Mode. After flashing with SFT it is not needed. Only for flashing in S/W Upgrade Mode.

The currently available drivers work fine with x64...
I never used SFT on x86, and I never had a problem. I didn't even need to disable driver's signature enforcement, ever.
What's weird here is that his phone boots in to S/W upgrade mode without any key press. It seems to me that now you got there a flashlight...lol

[GUIDE] [UNBRICK]LG Magna H502F Stock Rom

Your LG Magna(H502) stuck on lg logo or bootlooping follow this guide to fix your device
Requirements:
USB Cable
LG Driver
LG FlashTool
MegaLock.dll
H502F Stock ROM
Let's start
1.Install the LG Driver
2.Install LG FlashTool and don't run it yet
3.Copy MegaLock.dll and replace in the folder LG FlashTool (C:\LG\LGFlashTool)
4.Turn off your device(remove battery and put it back to be sure its off)
5.Press and Hold the Volume UP button,plug in the USB cable and hold until you see "Firmware Update" you are now in download mode
Don't plug into usb 3.0 port and try other ports if getting issues
6.Open Device Manager on your PC
Go on "Ports (COM & LPT)" if the driver is installed properly, you will see "LGE Mobile USB Serial Port (COMxx)"
We need to change the COM port number to 41
Double click on "LGE Mobile USB Serial Port"
Go to Port Settings Tab and click Advanced
Change COM Port Number to COM41 and click OK
Disconnect USB cable,wait a few seconds and reconnect or reboot back in download mode to check if the drivers are working properly
7.Open LG FlashTool as admin
Tick the Select Manual Mode box
Extract LG Magna H502F.rar
Click the DLL "....." button and select the DLL found in the extracted folder(LGH502f_20150416_LGFLASHv190.dll)
Click the S/W add button and select the file with the .tot extension(LGH502fAT-00-V10a-CIS-XX-MAR-16-2015+0.tot)
Don't touch anything else and press ok
Flashing will format the phone all data will be lost
8.Click on the Yellow Arrow Button at the top left and it will start the flashing process
When you see ready in a few seconds you will be asked to disconnect and reconnect the cable and it will start flashing
It will take some time
During the flashing process, the phone will reboot itself and will display "MiniOS Factory Reset Status".Don't worry about it
When you see pass in FlashTool and Factory Reset Status 3 on your phone means the flashing process is completed
Disconnect the cable and remove the battery
Power on your phone and enjoy your working phone again (Don't forget to disconnect USB cable else if you didn't close the FlashTool it will go back in download mode and flash again)
Fixing problems
Factory Reset Status 2 and download fail
Method 1
1.Disconnect the cable and take out the battery after some seconds insert back
2.Press and hold both the power button and the volume down and hold until LG logo appears release the buttons and immediately press and hold both buttons again to go in Factory Reset
3.Choose Yes, then Yes again, the phone will reboot
Method 2
1.In step 7 where we are setting up the FlashTool change the action mode to Board DL instead of Upgrade DL
2.When the flashing is done your phone will reboot to the AAT Screen
3. Hold down power button and press normal boot (+power) your phone will reboot. (dont forget to disconnect usb cable or close the FlashTool)

LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Install LG Drivers from here : https://sourceforge.net/projects/avicohh/files/Android/LGUnitedMobileDriver_S51MAN313AP22_ML_WHQL_Ver_3.13.2.exe/download

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Try installing the driver when you are in download mode or try other ports in your computer.If it still doesn't work try this driver http://oceanhost.eu/x1b0tjlhzw1z/LGUnitedMobileDriver_S51MAN313AP22_ML_WHQL_Ver_3.13.2.exe.htm

May the stock ROM work with h500f ?

Geralt1232 said:
May the stock ROM work with h500f ?
Click to expand...
Click to collapse
Nope

is this v10a? which ROM can be rooted and TWRPed?

xd
as I can install the KDZ I have the LG H502G And not catch any of that model Dll !! Help!!​

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
You have to enable "Show hidden devices"

I lost data connection often when playing games or using any app can this problem solved by installing stock rom again? Plzz tell me the solution

Trying to get rid out TWRP
If I ever flash stock firmware, does custom recovery/TWRP be removed ?

yes.it will be replaced with stock...
Sent from Valhalla

Lg magna
My lg magna is not booting.
I tried installing a custom ROM it showed that it was done but its not booting now. Its not even booting to recovery mode. I've not tried flashing the a ock ROM but will it work.will it boot in download mode?

go to view option appear on that window and click on 'show hidden devices'
danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Reply::go to view option appear on that window and click on 'show hidden devices'

Hello, I have the following problem. As in every other thing ive done to this phone (root, installing twrp, installing xposed) I always thought my model was LG-H502F. Though, my model is LG-H500F, I bought it from Greece, I recently bought Huawei P8 lite 2017 for myself and I gave my old LG to my father, he tell me that sometimes it lags and he is right. I think it lags because I uninstalled Xposed (flashed the uninstall zip using twrp) and also removed root, because he didnt need those things in his phone. The question is: Is there somewhere I can get the stock LG-H500F zip and what guide should I use? Ive been searching for a while now and can't find many topics related to LG-H500F. Thanks

Aneom7331 said:
Hello, I have the following problem. As in every other thing ive done to this phone (root, installing twrp, installing xposed) I always thought my model was LG-H502F. Though, my model is LG-H500F, I bought it from Greece, I recently bought Huawei P8 lite 2017 for myself and I gave my old LG to my father, he tell me that sometimes it lags and he is right. I think it lags because I uninstalled Xposed (flashed the uninstall zip using twrp) and also removed root, because he didnt need those things in his phone. The question is: Is there somewhere I can get the stock LG-H500F zip and what guide should I use? Ive been searching for a while now and can't find many topics related to LG-H500F. Thanks
Click to expand...
Click to collapse
https://lg-firmwares.com/lg-h500f-firmwares/
just find the country you are in.

I found this page earlier but can you import the kzd file to LG Flash tool? I didn't test this but, I guess it works. Thanks for replying

Aneom7331 said:
I found this page earlier but can you import the kzd file to LG Flash tool? I didn't test this but, I guess it works. Thanks for replying
Click to expand...
Click to collapse
yes. it will )

Hi, I'm in the same situation as Aneom7331, indeed I have a bricked LG Magna H500F and I'm trying to flashing a stock firmware. Where should I put the .kdz file in the lg flash tool 2.0.1.6? Moreover, the .kdz file has not a .dll file together with it, Thanks in advance

Someone have link to stock for h502y?