LG G4 H815 V20B Root Question - G4 Q&A, Help & Troubleshooting

Hi all,
I recently had found the Rom from here http://forum.xda-developers.com/g4/development/h815-genisys-rom-1-0-classic-v10g-t3192649.
And i also had downloaded all the neccessary files V20C 3.6 genesis Rom. But my device is H815 International version and the software is V20B.
Is that okay if i flash it with V20C 3.6 Genesis Rom?

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Lg g3 d852 baseband uptade ?

ok, a few time back i wanted to try Miui for the lg g3, so i flashed the KKmodem for the lg g3 d852 (fido). I wanna try the fulmic os 4.1 (marshmallow). Will i need to update the radio/modem of the phone or will it get updated automatically with the Rom ?

LG G3 D855 update help

I have recently bought a used lg g3 d855 (32gb) running kitkat 4.4.2 Its software is of hongkong. Now I want to upgrade to official marshmallow. Do I need to upgrade it first to lollipop?
mudassiriqbal01 said:
I have recently bought a used lg g3 d855 (32gb) running kitkat 4.4.2 Its software is of hongkong. Now I want to upgrade to official marshmallow. Do I need to upgrade it first to lollipop?
Click to expand...
Click to collapse
If you have KDZ file, You don't have to upgrade lollipop. Flash MM KDZ file with wipes!

LG G3 D855 Stock Firware on LG G3 D850

Hello,
Since we have received android Marshmallow update for LG G3 D855 (international version), I am wondering if anyone has tried to install D855 stock firmware file (android 6.0) on D850 (AT&T) version and had any success? I am hoping D855 and D850 are not too different because both use same processor.
I am asking this because I used to have a SONY phone from AT&T and I flashed international version firmware on it and it worked perfectly fine. This was about two years ago.
deepak_yadav417 said:
Hello,
Since we have received android Marshmallow update for LG G3 D855 (international version), I am wondering if anyone has tried to install D855 stock firmware file (android 6.0) on D850 (AT&T) version and had any success? I am hoping D855 and D850 are not too different because both use same processor.
Click to expand...
Click to collapse
It will brick the device they are not as similar as you think. Only flash D850 firmware on the D850 phone.
Sent from my LG-D855 using Tapatalk
Supposedly, the D855 firmware can be modified/patched to run on D850. At least, there is a Lollipop D855 ROM that runs of D850. So in theory, maybe the D855 ROM can be modified to run on D850.
Akopps said:
Supposedly, the D855 firmware can be modified/patched to run on D850. At least, there is a Lollipop D855 ROM that runs of D850. So in theory, maybe the D855 ROM can be modified to run on D850.
Click to expand...
Click to collapse
Thank you. That's what I was thinking. LG G3 is my daily use phone so I can't take a risk. That's why I was wondering if someone has tried it. I know folks at XDA are talented and someone probably have found a solution.

Should I update my Lg G3 V30b to V30j?

Hi folks,
I have a LG G3 D855P, currently running android 6.0, kernel 3.4.0.
My software version is: V30b-GLOBALL-COM.
I'd like to know if is there a new version I could update to like the v30J , I don't have any recovry installed and my phone is not rooted.
Previewsly I used the LGUP method to upgrade from stock android 5.0.X to my currently version.
How can I update my androidversion? and should I?
Thank you !
use the lg up to update from 30b to 30j using the KDZ of 30j

need help rooting d85530n

can't root D855 version 30n ...Kingroot doesn't work... Any ideas anyone?? I really need to flash a custom rom ??
No way. You need to downgrade to a lower version with lgup first
Sent from my LG-D855
not can root, change firmware to v30b
How to Root+TWRP LG G3 (D855) V30n
[Guide] How to Root+TWRP LG G3 (D855) V30n Firmware and Install Latest Cyanogenmod
thanks to y'all @Censto and @krasimiretov I downgraded to D85530b yesterday... and now I use. thanks to @truongthevinh for the lovely Rom

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