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Factory data reset is disabled by kill switch and can't boot into twrp on pixel rom

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trouble.

Senior Member
Nov 9, 2017
663
145
Hello!

O have lg v30(h930) and i recently flashed a custom rom(pixel experience rom). And now i can't boot into twrp bcz factory reset is disabled by kill switch. I have no root now i want to go back to the stock rom. I don't like this rom bcz so much battery drain and slow performance.

Plz help me with this problem:)
 

trouble.

Senior Member
Nov 9, 2017
663
145
Don't quite understand. If you haven't factory reset your phone, then you should still have TWRP. Boot to TWRP with fastboot commands or button dance?

There is a problem! There is no "oem unlock option" in developers setting and when i go to bootloader and type "fastboot boot twrp img" then it gives me error"fastboot is not recognized as an internal pr external comman,operable program or batch file".
I just want to go back to stock bcz this rom is very bad:(
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
There is a problem! There is no "oem unlock option" in developers setting and when i go to bootloader and type "fastboot boot twrp img" then it gives me error"fastboot is not recognized as an internal pr external comman,operable program or batch file".

I just want to go back to stock bcz this rom is very bad:(
Have you tried using dev patched LGUP to reflash stock h930 firmware?

Sent via open market LG US998 V30/V30+
 
Last edited:

fubugang

Senior Member
Feb 9, 2014
213
68
No. Can u guide me how to do that?
How could you not be familiar with lgup? You HAVE to use lgup to convert your h930 to us998 to even unlock your bootloader

---------- Post added at 12:41 AM ---------- Previous post was at 12:40 AM ----------

No. Can u guide me how to do that?
You can find the patched lgup here https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99820a040330-kdz-t3786337 with instructions on how to use it
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
How could you not be familiar with lgup? You HAVE to use lgup to convert your h930 to us998 to even unlock your bootloader

You can find the patched lgup here https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99820a040330-kdz-t3786337 with instructions on how to use it

Europe H930 doesn't convert to North America US998 for bootloader unlock, among other reasons as it already has fastboot flash commands.

But he probably used LGUP to downgrade to necessary pre-July 2018 H930 KDZ firmware -- unless he was lucky enough to already have that on his phone.... Those of us in the beginning of WTF didn't have to downgrade to anything. ;)

There's also dev patched LGUP in the Europe H930 KDZ thread. He's had to have seen it...
 
Last edited:

trouble.

Senior Member
Nov 9, 2017
663
145
Europe H930 doesn't convert to North America US998 for bootloader unlock, among other reasons as it already has fastboot flash commands.

But he probably used LGUP to downgrade to necessary pre-July 2018 H930 KDZ firmware -- unless he was lucky enough to already have that on his phone.... Those of us in the beginning of WTF didn't have to downgrade to anything. ;)

There's also dev patched LGUP in the Europe H930 KDZ thread. He's had to have seen it...


My bootloader is unlocked when i type adb reboot bootloader it reboots in fastboot but when i type fastboot boot twrp.img it gives a error"fastboot is not recognized as an internal or external command
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
My bootloader is unlocked when i type adb reboot bootloader it reboots in fastboot but when i type fastboot boot twrp.img it gives a error"fastboot is not recognized as an internal or external command

I'll repeat my question below:
Have you tried using dev patched LGUP to reflash stock h930 firmware?

Something is messed up about your phone. You need to go back to the beginning. Reflash stock H930 KDZ.

Then, we'll worry about reinstalling TWRP.
 
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trouble.

Senior Member
Nov 9, 2017
663
145
I'll repeat my question below:


Something is messed up about your phone. You need to go back to the beginning. Reflash stock H930 KDZ.

Then, we'll worry about reinstalling TWRP.


Can u give me some instructions how to flash it bcz i never used it i usually flash files in twrp and i don't want to brick my phone
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
Can u give me some instructions how to flash it bcz i never used it i usually flash files in twrp and i don't want to brick my phone

See bottom of post #1 in this thread:

https://forum.xda-developers.com/lg-v30/development/h930-lg-v30-european-market-h930-t3779076

Unless you were already on pre-July 2018 firmware when you unlocked your bootloader, you had to use LGUP to temporarily downgrade earlier firmware. Since your bootloader is already unlocked you don't have to downgrade, but you do have to re-flash stock firmware with LGUP. It can be the most recent, if you wish. Then you will use fastboot flash commands to re-install TWRP.
 

trouble.

Senior Member
Nov 9, 2017
663
145
See bottom of post #1 in this thread:

https://forum.xda-developers.com/lg-v30/development/h930-lg-v30-european-market-h930-t3779076

Unless you were already on pre-July 2018 firmware when you unlocked your bootloader, you had to use LGUP to temporarily downgrade earlier firmware. Since your bootloader is already unlocked you don't have to downgrade, but you do have to re-flash stock firmware with LGUP. It can be the most recent, if you wish. Then you will use fastboot flash commands to re-install TWRP.


I have downloaded the h93020r version now only i have to flash a kdz with lgup right?
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
I have downloaded the h93020r version now only i have to flash a kdz with lgup right?

Yes. You can either choose Refurbish or DL Partition (but choose all partitions). This will wipe your phone, so save off anything you don't have stored elsewhere. Your bootloader will remain unlocked. You will then reinstall TWRP via fastboot flash commands.
 

trouble.

Senior Member
Nov 9, 2017
663
145
Yes. You can either choose Refurbish or DL Partition (but choose all partitions). This will wipe your phone, so save off anything you don't have stored elsewhere. Your bootloader will remain unlocked. You will then reinstall TWRP via fastboot flash commands.


I thought that u have to choose upgrade option for flashing a stock rom?
 

ChazzMatt

Recognized Contributor
Nov 30, 2010
18,524
14,366
Atlanta, Georgia
I thought that u have to choose upgrade option for flashing a stock rom?
If you choose "upgrade" it will only overwrite the parts it thinks needs updating. I think you need a fresh install of all the stock firmware as something seems corrupted from your ROM installation.

Since your bootloader is already unlocked, you can actually flash the newest H930 firmware. 20R is sort old. I think 21O is the newest... But it's your choice.

Then, you would reinstall TWRP, reflash the no root check and no encryption files, and reflash Magisk -- like when you first unlocked the bootloader and rooted.

Sent via open market LG US998 V30/V30+
 

trouble.

Senior Member
Nov 9, 2017
663
145
If you choose "upgrade" it will only overwrite the parts it thinks needs updating. I think you need a fresh install of all the stock firmware as something seems corrupted from your ROM installation.

Since your bootloader is already unlocked, you can actually flash the newest H930 firmware. 20R is sort old. I think 21O is the newest... But it's your choice.

Then, you would reinstall TWRP, reflash the no root check and no encryption files, and reflash Magisk -- like when you first unlocked the bootloader and rooted.

Sent via open market LG US998 V30/V30+


Can i update to 210 after flashing this 20r?
 

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