Unable to downgrade from v20p to v20g - G4 Q&A, Help & Troubleshooting

Hi all, I'm trying to downgrade my LG G4 H815 from v20p to v20g. This because I downgraded from v29a and only v20p flashing was successful (through lgup). Now I need to downgrade to v20g but I cannot do it and I didn't find anything on the Internet. I tried both with 0.0.3.2.3 and 0.0.4 dll versions on lgup and it sticks (both with v20p and v29a).
What can I do? I have to downgrade to lollipop and then upgrade?
Note: I have unlocked bootloader and the possibility to root and install twrp.
Thanks in advance

Related

[Q] how to flash v20c firmware in lg P936

HI everyone. i want to flash v20c ics firmware in lg p936 and currently i have v10i . i tried flashing with kdz tool but it hangs during flashing and then failed resulting in bricking my phone. then i flashed update with lg support tool to get back my phone in working condition. anyone please guide me step by step to successfully flash v20c ics firmware ??? thank you.

Updating from 10h to 10j

Hi all
If i download the 10j KDZ file for my Australian D855 and i proceed to flash the KDZ file using Normal Flash within LG Flash Tool will my phone brick?
Its currently on 10h and its rooted and has bump installed

[Q] : D855 v10i rooted by Towelroot possible upgraded to V10n ?

Hey there,
I actually have an V10i rooted stock on my G3 (D855 version, rooted with Towelroot).
Can I upgrade it with the OTA V10n proposed, without losing the root ?
Anyone here have already did it ?
Tks for the answers.
darkgugu said:
Hey there,
I actually have an V10i rooted stock on my G3 (D855 version, rooted with Towelroot).
Can I upgrade it with the OTA V10n proposed, without losing the root ?
Anyone here have already did it ?
Tks for the answers.
Click to expand...
Click to collapse
No OTA will remove root or brick your phone if you have twrp installed
Flash 10n kdz and reroot using purpledrake
itsbighead said:
No OTA will remove root or brick your phone if you have twrp installed
Flash 10n kdz and reroot using purpledrake
Click to expand...
Click to collapse
Many thanks !
Or flash any other version (V10A,B,C ...), then OTA to V10n and root.

Failed D855 downgrade from MM

Hello, i had v30a MM installed via .kdz, then i got a 20a .kdz and followed this tutorial:
https://forum.xda-developers.com/showpost.php?p=64624353&postcount=3
but now i'm in boot loop, already did a hard heset but still nothing

How to upgrade to MM from LP?

Can anyone help me upgrade to the latest factory firmware (MM) from LP? I origionally downgraded with LGUP and rooted. Then i had a bootloop and was only able to use the LP firmware via LGUP again, and instead of rooting 13b again i would like to go to MM and try the UsU and Magisk method i found...
Can anyone tell me how I can get to MM? or link me to firmware or a TUT? No updates show up as a OTA on the phone...
robles4242 said:
Can anyone help me upgrade to the latest factory firmware (MM) from LP? I origionally downgraded with LGUP and rooted. Then i had a bootloop and was only able to use the LP firmware via LGUP again, and instead of rooting 13b again i would like to go to MM and try the UsU and Magisk method i found...
Can anyone tell me how I can get to MM? or link me to firmware or a TUT? No updates show up as a OTA on the phone...
Click to expand...
Click to collapse
You an get the firmware here
Sent from my VS986 using XDA Labs

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