Did I brick my LG v20 H910/H915?

[Richard Gregory]

Bought an LG v20 H910.
One of the methods to change from standard ROM involved altering the phone to an H91510e.
Although the expected results from those instructions did not happen on this phone, afterward the phone WAS working as an H915.
Tried again with a different method to add TWRP to the (now) H915 but I fear it bricked.

1) I can get [fastboot mode] (vol-, then plug USB in) to come up but I have no idea from here how to get to install TWRP (or even it it did get installed).
2) Trying to enter [download mode] just gives me a colorful garbled screen.
3) Just trying now to turn on the phone says OS corrupted.

In [download mode] LGUP does run but it cannot determine the phone's model, so it won't do anything.
In [fastboot mode] the screen just has tiny writing that says "1140 fastboot mode" started, and above that it that has some data about the phone:
product_name - msm8886 64GB
variant - msm8886 64GB
bootloaded version -
baseband version -
carrier_info - N/A
serial_number - [serial number here]
signing - production
secure_boot - disabled
lock_state - locked

PS - The msm# above (8886) *could be* 9996 or 8996, etc. The print is way tiny and characters too close together. Can't really tell

Can anyone help?

 

[ocnbrze]

wow, that sucks.....ok first off i do not have your phone.
do you have a link for the methods you have tried to root your phone?

 

[Richard Gregory]

Following the instructions at:
https://forum.xda-developers.com/v20...-v10m-t3664500

Do I have the wrong instructions? At one point the instructions say :
"Download this modified ... DirtySanta root package: [link] - Extract this somewhere that you can run adb and fastboot from."
But that [link] is dead so I found what I assumed to be the right "LG V20 Root Package.zip" and ran that, but later problems (where the instruction on what to manually type in and run) are obviously for different files than what came in my ZIP download. The instructions call for .BAT files, but I have .CMD files, and they're in a sub-folder.
Also, even though the next link also seems dead I managed to find and D/L h910-10r.zip.

Anyway, running "adb logcat -s dirtysanta" does open a CMD window that freezes after "beginning of system & beginning of main, then nothing.
In the other CMD window I'm supposed to run the .BAT files I do not have and the .CMD files will not run.

So, going back now to the instructions If I want to pick up where it failed, where do I go?
I suppose I must start the phone in fastboot mode but even so STEP1.CMD will not run.
I can run "JustRunMe.cmd" which opens a couple of DOS windows but in there steps 1 & 2 both fail.
Step 3 does /something/ on the phone (files transfers?) then the phone reboots to that LG logo screen and stays there forever.

Thanks. (Hoping that helps you to help me!)

 

[ocnbrze]

well first off, flashing something blindly like that is not good. it is a sure way to brick a phone. you need to know exactly what files need to be used.

dirty santa https://forum.xda-developers.com/v20/development/ls997vs995h910-dirtysanta-bootloader-t3519410

is this where you got the v20 root zip from?

i would hold off trying to root and get your phone back up and running. i would try and flash the phones firmware.
https://www.hardreset.info/devices/lg/lg-v20-at-and-t-h910/faq/firmware-flash/

 

[Richard Gregory]

Not panicing!
I found https://forum.xda-developers.com/v20/how-to/root-h910-v10m-t3664500 to follow.
The link there to the "dirty santa" files was no good so I got them at the site you show above then returned to the thread I started at to keep going with the process.
The hard reset process you cite fails at step 4.
Because I need a phone I bought a v20 vs995 in case I can't get this working again. If I pay round-trip postage would you care to try to resuscitate it? (At what you might charge, of course!)

 

[ocnbrze]

Not panicing!
I found https://forum.xda-developers.com/v20/how-to/root-h910-v10m-t3664500 to follow.
The link there to the "dirty santa" files was no good so I got them at the site you show above then returned to the thread I started at to keep going with the process.
The hard reset process you cite fails at step 4.
Because I need a phone I bought a v20 vs995 in case I can't get this working again. If I pay round-trip postage would you care to try to resuscitate it? (At what you might charge, of course!)

sorry this is better for you to figure out. it is a way to learn how things work. plus if you are able to revive the phone, the feeling of accomplishment.....there is nothing better.

try the firmware guide i posted and see if this works or not.