QD 9008 FIX!! Tested on LG-V410(G Pad 7.0 US ATT)

[maxime506]

So windows finally had installed the fastboot driver. I followed the instructions to dd the bins except the laf and systems. I even used aboot and boot bin files since using img files in SD cards won't work at the beginning. I flashed can12 via twrp...and power off and it won't reboot no more. Dead. It won't charge, as the battery is cold after charging for an hour. It won't respond even if the SD card containing the partitions is inserted. Just wanna know what could go wrong and did I completely borked the g pad 7? It's at&t version just like the op's.

 

[olarilole]

@thekiln, any idea what was the order of the partitions? I think I'm making some progress, I get a screen with battery indication, then nothing.

 

[olarilole]

@thekiln, any idea what was the order of the partitions? I think I'm making some progress, I get a screen with battery indication, then nothing.

Here is the partition distribution that took me into fastboot:

device=/dev/sdb
dd if=modem_16384.bin of=${device}1
dd if=sbl1_147456.bin of=${device}2
dd if=rpm_149504.bin of=${device}3
dd if=tz_150528.bin of=${device}4
dd if=sdi_151552.bin of=${device}5
dd if=aboot_152576.bin of=${device}6
dd if=rpmb_156672.bin of=${device}7
dd if=tzb_157696.bin of=${device}8
dd if=abootb_158720.bin of=${device}9
dd if=persist_212992.bin of=${device}15
dd if=boot_327680.bin of=${device}17
dd if=recovery_376832.bin of=${device}18
dd if=sbl1b_444416.bin of=${device}22
dd if=rct_447488.bin of=${device}24
dd if=factory_492544.bin of=${device}28
dd if=cust_688128.bin of=${device}31

based on a list found here:
https://forum.xda-developers.com/showpost.php?p=54837231&postcount=5

I can boot into TWRP recovery and it says it installs cm-12.1-20151117-SNAPSHOT-YOG7DAO1K5-v400.zip but then boots back into fastboot.

I also tried installing TWRP into the phone memory with
sudo fastboot flash recovery ~/Downloads/TWRP_2.8.5.0_v400_bumped.img
but can't boot into it.

So I'm stuck with fastboot and launching TWRP from the computer

 

[Fabioamd87]

Hello, I've successfully followed the tutorial until step 9. When i flash TWRP it reboots and comes back to the fastboot screen.

If I hold the vol+ button when it is booting, the download mode screen flashes for a second and then it comes back to the fastboot.

I haven't been able to to anything else and would be very grateful if someone could help me with this.

Apparently there is no bootloader so it is stuck

I attached a picture of my screen

you have to use the Kitkat image and not the Lollipop.

Right now cyanogenmod have closed it's website for downloading roms.
I am not sure I am flashing the right mod, i get this error:

 

[BeeWall]

you have to use the Kitkat image and not the Lollipop.

Right now cyanogenmod have closed it's website for downloading roms.
I am not sure I am flashing the right mod, i get this error:

CyanogenMod shut down. The new ROM is at http://download.lineageos.org. The error means something went wrong, and it can't find /data, /system, and /cache.

Sent from my Amazon Fire using XDA Labs

 

[Fabioamd87]

After so many trying the tablet didn't want to fix.
I ended up flashing also laf.bin and in Download mode flashing a Stock Android 5.x
Tablet as new!

 

[ethanchow]

wow !!! i can see the LG logo in my tablet !!!

but i can't run next step !!!

pushed power + volume up button but i never changed screen !!
This is written on the screen.
"boot certification verify"

very late reply but you need to flash "bump zip" that come with your rom or pick another rom to flash

 

[ruin2it3]

A little zram help

Me and my infinite stupidity...I made a large swap partition on SD and proceeded to delete the zram file/partition. Since then the SD card slot got damaged and hence the swap partition is gone and the tablet runs like crap - barely able to keep the system UI responsive. The device is an LG G Pad v410.
My question is if it is possible to remake the zram, and if so how/where?
I have attempted to reflash Lineage 14.1, but no difference is seen.
While I have no choice to attempt to see if this will fix the issues, I'm concerned the device is damaged. It is performing that poorly.

Thanks in advance!

 

[dunnakaal]

Works with LG V400

Thank you for your Guide

At 2 Points i had to improvise
1. (Step 14.) the Path on the mmc in my case was "/dev/block/mmcblk0pX" (it took me quiet some time to figure out what was wrong with the path)
2. my v400 would not boot when installed a custom rom via twrp so i ended up with copying also the laf.bin (/dev/block/mmcblk0p16) then i was able to restore the tablet via LG Firmware Downloader

 

[Michae l083]

Hello everyone! Maybe someone has the opportunity to merge from their tablet LG V410 loader (We take a fully working phone (with Root installed, as well as Terminal Emulator and BusyBox)
Start Terminal Emulator and enter the commands:
su
dd if = / dev / block / mmcblk0 of = / sdcard / Loader.img bs = 1024 count = 168960
At the root of the internal memory of the phone, a boot image file will be created.) Dump or flashing with the TOT extension can also help, unfortunately I do not understand at all in Linux, so I ask you about the help to raise your brick.

 

[VDavydov]

Hi all!
I've get two T-Mobile LG GPadF 8.0 v496 as gift. And bricked one, when tried to flash firmware v495 with UK LTE bands (. No download mode, no logo, only QDL interface. Is this instruction may be used for my tablet? And where i can get files for repairing?
I can get files from second tablet, but there is no /dev/block/mmcblk0, i have this-
/dev/block/mmcblk0p1
/dev/block/mmcblk0p11
/dev/block/mmcblk0p27
/dev/block/mmcblk0p28
/dev/block/mmcblk0p31
/dev/block/mmcblk0p32
/dev/block/mmcblk0p33
/dev/block/mmcblk0p34

Thanks!

upd. My fault, didn't see by ls in /dev/block folder - i have such device! now i have Loader.img.

 

[jonshipman]

Oh geez, this thread saved me. I just wanted to get the LG Flash Tool 2014 to see the device so I could "start over". Luckily, this trick had all others beat. Who knew that LG phones would read a partition table on the sdcard? That's crazy.
Anyway, the only difference is that my Download (laf) partition wouldn't work. Fastboot or otherwise. However I did see an LG device in device manager without drivers. Googled the device id (USB\VID_1004&PID_633E&MI_03) and then downloaded the drivers and it was seen by the LG Flash Tool 2014 and I just had to throw the KDZ on there. Linked below are the LG USB Serial drivers for the above device id.

google drive => /open?id=1fmCaDHvzqEtqCY3UIB85gz2gr6tQOhTg
(add to you drive if the downloads are too much)