Failed D855 downgrade from MM - G3 Q&A, Help & Troubleshooting

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

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[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

Downgrade LG G3 D858HK from Marshmallow 6.0 (v30a) to factory default (4.4kitkat)

I upgrade my G3 D858HK Phone from Lollipop 5.0.2 to Marshmallow 6.0 (V30a), now I would to downgrade it factory default (which was 4.4 Kitkat) or Lollipop 5.0.2.
I tried to install (kitkat and Lollipop) it using LG Flash Tool, but it gives me error, saying you already installed the upgraded OS.
My phone is not rooted and also dont have custom recovery, Would it possible to downgrade it?
Please guide me, Thanks
hi.try LG UPTOOL.it is very easy and you will get success.I downgraded my phone in that way.
qazihamayun said:
I upgrade my G3 D858HK Phone from Lollipop 5.0.2 to Marshmallow 6.0 (V30a), now I would to downgrade it factory default (which was 4.4 Kitkat) or Lollipop 5.0.2.
I tried to install (kitkat and Lollipop) it using LG Flash Tool, but it gives me error, saying you already installed the upgraded OS.
My phone is not rooted and also dont have custom recovery, Would it possible to downgrade it?
Please guide me, Thanks
Click to expand...
Click to collapse
http://androidbr.net/how-to-downgrade-lg-g3-incl-dual-sim-to-lollipop-or-kitkat-lgup-tool/ ...Thanks to this, iwas able to finally downgrade my lg g3 D858hk from android 6.0 to kitkat :angel:

Install TWRP on LG G3 D858HK Marshmallow ?

Is there any way to install TWRP recovery on D858HK Marshmallow as I cann't find any vaild link for autorec MM D858HK??
MM 30a can be rooted and flashed with TWRP, but not 30b

Unable to downgrade from v20p to v20g

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

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