[ROM][Nougat 7.0] LG G Pad X 8.0 V521 20G Stock and Debloated Rooted ROMs 2/22/2017

[MicroMod777]

Heres the latest update from LG.

Must be at least 20f with TWRP to flash this.

To get TWRP go here: (Kdz to 20f if on 20g)
https://forum.xda-developers.com/showthread.php?t=3533338

Do NOT wipe system or you might get stuck in twrp bootloop.

**********************
FLASHING INSTRUCTIONS
**********************
1. MUST BE IN 20F.
2. DO NOT FORMAT SYSTEM.
2. TWRP BACKUP FIRST
3. Flash from TWRP.

DOWNLOAD

LG-V521-20G-Stock-Rooted.zip

https://www.androidfilehost.com/?fid=529152257862705254

LG-V521-20G-Stock-Debloated-Rooted.zip

https://www.androidfilehost.com/?fid=529152257862705822

***********************************

LG-V521-TWRP.ZIP (Thanks to shabbypenguin)
***Also adds flashing TWRP to recoverybak so if an error comes up your stock recovery doesn't get reflashed.

https://www.androidfilehost.com/?fid=673368273298934005


***********************************************
COMING FROM ANOTHER ROM FLASHING INSTRUCTIONS
***********************************************

1. TWRP BACKUP FIRST
2. PLACE ROM IN INTERNAL STORAGE
3. WIPE DATA, CACHE, DALVIK/ART CACHE, SYSTEM
4. FLASH ROM FROM INTERNAL STORAGE.

*****IF IT REBOOTS BEFORE FINISHING FLASH, PRESS AND HOLD VOLUME DOWN AND POWER TILL OFF.
*****THEN ON REBOOT WITH VOLUME DOWN AND POWER PRESS, LET GO OF POWER ONLY FOR A SLIT SECOND AND *****REPRESS TO GO INTO FACTORY RESET MODE. THEN SAY YET, AND IT WILL GET YOU BACK TO TWRP.
*****IN TWRP, GO TO REBOOT AND SELECT POWER OFF. THEN GO TO STEP 4.









**************
ERROR???
**************
If you wipe system then flash a rom you might get stuck in twrp bootloop.

Here's a fix by ralphwiggum1:

https://forum.xda-developers.com/showpost.php?p=70851933&postcount=39

If that fix fails, then flashing stock recovery is another option. Then you'll have to reroot and get twrp again. If your on 20g, you'll have to kdz 20f and start over.

LG-V521-STOCK-RECOVERY.zip
https://www.androidfilehost.com/?fid=745425885120710531




Sent from my LG-H811 using Tapatalk

 

[W_A_R]

Thank you!, working 100%

 

[MicroMod777]

LG-V521-20G-Stock-Debloated-Rooted.zip

https://www.androidfilehost.com/?fid=529152257862705822

Sent from my LG-V521 using Tapatalk

 

[SiNJiN76]

LG-V521-20G-Stock-Debloated-Rooted.zip

https://www.androidfilehost.com/?fid=529152257862705822

Sent from my LG-V521 using Tapatalk

what was debloated?

 

[MicroMod777]

what was debloated?

Most gapps and tmo bloat.

Sent from my LG-V521 using Tapatalk

 

[rbadh91]

SuperSU is not detecting root in LG-V521-20G-Stock-Debloated-Rooted.zip

LG-V521-20G-Stock-Debloated-Rooted.zip doesn't seem to have TWRP either.

Am I missing something?

 

[MicroMod777]

SuperSU is not detecting root in LG-V521-20G-Stock-Debloated-Rooted.zip

LG-V521-20G-Stock-Debloated-Rooted.zip doesn't seem to have TWRP either.

Am I missing something?

Odd. Flash just SuperSU then:

https://forum.xda-developers.com/showthread.php?t=3452703

Sent from my LG-H872 using Tapatalk

 

[rbadh91]

Odd. Flash just SuperSU then:

https://forum.xda-developers.com/showthread.php?t=3452703

Sent from my LG-H872 using Tapatalk

It went back to stock recovery after flashing the zip. adb reboot recovery takes me to stock recovery.
Vol Down + Power to boot, and letting go of Power holding down Vol Down, then pressing Power & Vol Up takes me to the "hard reset" prompt, and it actually wipes device when selecting yes. I'm thinking the recovery has changed in 20G and it wipes the device instead of taking you to recovery.

Joey's Root Checker shows "Sorry! Root access is not properly installed on this device". SuperSU shows "There's no SU binary installed and SuperSU cannot install it. This is a problem."

I have a feeling I'll have to downgrade to 20F using KDZ.

EDIT: Weird...FlashFire shows "Root was found, but access could not be acquired! Supported roots: SuperSU, Magisk, CM SU (SELinux/Permissive)) Found root: (null)".
Installed SuperSU app, no luck. Tried Superuser app, no luck.

 

[NoMoreBackdoors]

SuperSU is not detecting root in LG-V521-20G-Stock-Debloated-Rooted.zip

LG-V521-20G-Stock-Debloated-Rooted.zip doesn't seem to have TWRP either.

Am I missing something?

I had the same issue. Lost root and twrp. Had to downgrade and start from scratch.

 

[MicroMod777]

I had the same issue. Lost root and twrp. Had to downgrade and start from scratch.

Yea I've had this happen multiple times now. Twrp is somewhat buggy where if theres a crash during flashing, or if you format the system partition, somehow theres a failsafe feature that restores the stock recovery.

I thought I had it figured out and made a flashable zip for twrp that also flashes it to the recoverybak partition. But it happened aga7n.

Sent from my LG-V521 using Tapatalk

 

[SiNJiN76]

Yea I've had this happen multiple times now. Twrp is somewhat buggy where if theres a crash during flashing, or if you format the system partition, somehow theres a failsafe feature that restores the stock recovery.

I thought I had it figured out and made a flashable zip for twrp that also flashes it to the recoverybak partition. But it happened aga7n.

Sent from my LG-V521 using Tapatalk

There's another update on my tablet...(after flashing your zip from 2-22). Will you be doing another zip with this new update?

 

[LvDisturbed1]

New update is 95.22MB. I'm guessing security update. I would be wary, as the 20g update patches dirty cow, but still allows downgrade to 20f. This could block downgrade. Any brave souls out there want to confirm?

 

[sgrant]

New update is 95.22MB. I'm guessing security update. I would be wary, as the 20g update patches dirty cow, but still allows downgrade to 20f. This could block downgrade. Any brave souls out there want to confirm?

I know I'm late, but I just picked one of these tablets up this week. I didn't think much about what I was doing, and did all OTA updates that where available. This was on 10/25/2017 or so. I was able to then use Uppercut and LGUP to flash backwards to V52120i_00_0619.kdz and successfully root, and install TWRP.

I didn't keep stock long, I jumped over to Lineage OS 14.1.

Be warned though, on Lineage OS the weekly on 10/27/2017 will cause a bootloop in TWRP. At least it did for me. After install, and while stuck in bootloop it is pretty easy to fix:

1. Open ADB Shell and run the following 2 commands:

dd if=/dev/zero of=/dev/block/bootdevice/by-name/fota
dd if=/dev/zero of=/dev/block/bootdevice/by-name/misc

Then reboot and all will be well.

 

[Ivan683]

I know I'm late, but I just picked one of these tablets up this week. I didn't think much about what I was doing, and did all OTA updates that where available. This was on 10/25/2017 or so. I was able to then use Uppercut and LGUP to flash backwards to V52120i_00_0619.kdz and successfully root, and install TWRP.

I didn't keep stock long, I jumped over to Lineage OS 14.1.

Be warned though, on Lineage OS the weekly on 10/27/2017 will cause a bootloop in TWRP. At least it did for me. After install, and while stuck in bootloop it is pretty easy to fix:

1. Open ADB Shell and run the following 2 commands:


Then reboot and all will be well.

QUOTE