[Q] Update messed up G-Pad

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mike_1983

Senior Member
Aug 21, 2011
55
1
I had stock installed, rooted and twrp install, I downloaded the update and now it only boots into twrp. So i tried factory reset and restoring a backup I had, still nothing. Just now I pressed advanced wipe everything except SD Card, now I have no OS :( And no backup to restore.

For some reason twrp doesn't recognise any micro sd card I put in, says it cant mount them.

I can't get adb working whilst in recovery. I just want to go back to stock.

Also holding down vol down and up to get into download mode doesn't work.

Thanks for any advice.
 
M

mike_1983

Senior Member
Aug 21, 2011
55
1
Got it into download mode now somehow (rebooting from twrp instead of cold boot) and downloading the stock firmware from LG mobile support tool.
 
katsika

katsika

Senior Member
Oct 15, 2013
234
56
Athens
dont update the official rom if you re rooted or you have a custom recovery, they ll brick your tablet. If you have access to recovery you can install a custom rom and there is no need to go back to full stock (unless ofc you want to keep the stock rom in which case you need to flash it using the lg mobile support tool)
 
M

mike_1983

Senior Member
Aug 21, 2011
55
1
I think I did it by holding down vol up and vol down whilst in twrp, then pressing reboot, system (or perhaps pressing reboot system then holding them down). I'm not sure if the usb cable was plugged in or not. I tried holding down vol up and down from powered off, but it seemed to still always go into twrp.

Then you need B2CAppSetup.exe which is LGMobile Support Tool, you can then download the stock rom, it overwrites everything, like recovery and root.
 
E

Exoten

Member
Dec 11, 2010
38
4
Made the same mistake : said yes when the tablet proposed me to update. Booted in TWRP.
Tried to flash with support tool but it stops at 95% and tells me in german (!) to remove the battery and try again... I've tried many times (without removing the battery obviously), just the same.
And now I can't get out of the download mode. Everytime I plug the USB cable, it goes to download mode.

Any suggestion ?

EDIT :
I even tried this method : http://xdaforums.com/showthread.php?t=2622777
and it stops giving me a decompression error...


Edit 2 : it finally uncomressed corectly but i'm still stucked at 95% when installing : WPARAM_UPGRADE_ERROR

EDIT 3 :
Using the method http://xdaforums.com/showthread.php?t=2622777 and leaving default parameters : Korean language and country it finaly worked with the V50010A_00.kdz firmware.

My lg g pad is finally booting ! (the battery is totally drained)

Thanks to all !
 
Last edited:
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Fbien

Member
Feb 12, 2007
5
0
Exoten said:
Made the same mistake : said yes when the tablet proposed me to update. Booted in TWRP.
Tried to flash with support tool but it stops at 95% and tells me in german (!) to remove the battery and try again... (..)
EDIT 3 :
Using the method http://xdaforums.com/showthread.php?t=2622777 and leaving default parameters : Korean language and country it finaly worked with the V50010A_00.kdz firmware.
My lg g pad is finally booting ! (the battery is totally drained)
Thanks to all !
Click to expand...
Click to collapse

Many Tanks to Exoten (and others) :highfive:
Same mistake... Same errors (no standard flash / method available)... Try method from Edit 3 and ... My wife is happy again (this is her tablet) :D

++ No Wipe data necessary - All data (SD and internal were kept)
+ the OTA upgrade was applied, even if I selected A version of KDZ (and not B version)
- I lost the root

F'bien
 
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    E
    Exoten
    Made the same mistake : said yes when the tablet proposed me to update. Booted in TWRP.
    Tried to flash with support tool but it stops at 95% and tells me in german (!) to remove the battery and try again... I've tried many times (without removing the battery obviously), just the same.
    And now I can't get out of the download mode. Everytime I plug the USB cable, it goes to download mode.

    Any suggestion ?

    EDIT :
    I even tried this method : http://xdaforums.com/showthread.php?t=2622777
    and it stops giving me a decompression error...


    Edit 2 : it finally uncomressed corectly but i'm still stucked at 95% when installing : WPARAM_UPGRADE_ERROR

    EDIT 3 :
    Using the method http://xdaforums.com/showthread.php?t=2622777 and leaving default parameters : Korean language and country it finaly worked with the V50010A_00.kdz firmware.

    My lg g pad is finally booting ! (the battery is totally drained)

    Thanks to all !
    View

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