I know the downgrading procedure using LGUP.
I tried downgrading Marshmallow firmware F500S20m and F500S20v to Lollipop F500SAT-00-V11i-SKT-KR-NOV-10-2015+0.tot, but the phone got stuck into bootloop after successful flashing and factory reset did not help.
Upgrading it back to Marshmallow F500S20m made everything work normally.
Which is best website to download LG F500S firmwares?
Successfully downgraded F500S from Marshmallow to Lollipop using this.
https://forum.xda-developers.com/g4/general/tot-lg-g4-korean-f500l-tot-flash-files-t3294417
Firmware used to downgrade to Lollipop: LGF500LAT-00-V11d-LGU-KR-SEP-21-2015+0.tot
However, the model number is now shown as F500L in settings.
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Hello
I still did not receive the lollipop update. I have the LG G3 D855. I tried to update it manually from the About menu. How can I force the update?
Check it using PC Suite. If it still say you have the latest Kitkat version, it means that Lollipop hasn't been released for your region.
ekoloud said:
Hello
I still did not receive the lollipop update. I have the LG G3 D855. I tried to update it manually from the About menu. How can I force the update?
Click to expand...
Click to collapse
You may use the LG Flash tool to flash the device with the new firmware(kdz).
LG Flash tool: http://forum.xda-developers.com/showthread.php?t=2797190
Please look on this forum to find the lollipop firmware that was released for LG G3 D855 and download that firmware. You will use this file to flash the new update to your phone.
Note: Region does not matter. The model number of your phone is very important and it does matter.
So, I've recently flashed the kdz marshmallow file that came out from H815 eu to my h815 twn using LGUP. Is it possible for me to get OTAs even tho my firmware comes from the EU? or if I use LG bridge, it'll prompt me to update my phone to marshmallow h815 twn version when it comes out?
@shigi1231 could you tell me how you flashed the EU Marshmallow KDZ to your TWN device? I've tried using LG Flash tool and its fails every time.
lewiscrowley said:
@shigi1231 could you tell me how you flashed the EU Marshmallow KDZ to your TWN device? I've tried using LG Flash tool and its fails every time.
Click to expand...
Click to collapse
Search XDA for the LGUP tool and use that.
Hello
I bought a LG G3 a month ago.The model was D855 and running on stock kitkat.Later i updated my phone to Marshmallow using Lg flash tool 2014 but it showed some errors [no network,no wifi,no bluetooth] and the model number converted to D855V. Then searched and found my device with LS990 motherboard and D855 casing by getting help from this http://forum.xda-developers.com/lg-g3/help/d855-converted-to-d855v-t3121183/page4
As my device is LS990 i found solution to restore it using this method http://forum.xda-developers.com/spr...de-how-to-restore-sprint-lg-g3-ls990-t2852042 FAILED! I tried LS990ZV4 tot with LGUP8974.dll using flash tool.So i didn't have any solution to restore it without changing current build.prop to LS990 build.prop.And for that i need root access but i failed to root my stock Marshmallow .Then i was trying to downgrade my device using D855 firmwares where stock Lolilpop worked but no MTP connection.I decided to go for stock Kitkat so that i can root and change build.prop but it occurs bootloop when i flash with stock kitkat.I tried different version of D855 kitkat firmwares but the result is same NO SUCCESS! .And today i was trying to flash another version of Kitkat firmware which caused BRICKED my phone.Now download mode is not working.Only Fastboot mode.
There are some solution to fix Download mode.But i don't know which model to try for solution LS990 or D855 ?
How can i Unbrick and restore my phone to LS990?
TIA
i downgrade my h815 with lg bridge from nougat v30 port H-rom to mm with out flash first mm bootloader and now phone is stuck in download mode in 24% in lg bridge, i tried with lgup but is a unknown model, my model now is V300.... after this i tried LGflashtool v1.8.6.527 but filed to load
You can't downgrade from Nougat if you flashed the Nougat bootloader first. You need to flash the previous bootloader.
I want to unlock my LG 500L(I guess everyone wants that right ) which is updated to nougat.
I tried to downgrading using the F500l20u kdz from lg firmware using LGUP but it failed at 11%.
Replaced the .dll file , still no luck.
Tried to go back to LP using the tot but it failed giving the unknown command error.
So if anyone of you who want to support the unlocking of LG g4 F500L with nougat can give me suggestions on how to go back to MM in order to flash the USU.
Flashing back the Nougat kdz works fine though.