Hi guys, I have european e975 and would like to go safely back to stock, but i need help.
I tried to flash the new V20A stock KDZ via vietnamese easy method http://forum.xda-developers.com/showthread.php?t=2797190, but the tool just can't connect to the device, i tried everything, even fidling with COM ports.
Also I made backup with TWRP of V10H, but now the phone has CWM and CM11 and i don't know if i should use the backup.
tl;dr: Safest way/method to flash back to stock?
ThankYou )
Try to flash TWRP again, then restore backup
Flashing the twrp backup is fine don't worry.
Hello everyone,
Last week I flashed CM12 onto my G3, I have TWRP installed as my recovery.
I may have to send my G3 in for repair and if so plan to use the LG Flash tools to do so. I am worried that by doing so I will lose my EFS and modem. I flashed just the CM12 rom and Gapps, so would the stock modem and EFS still be the same as before I flashed CM12? I can currently backup both using TWRP, but will this modem and EFS be correct for my application of restoring back to stock?
Thanks to anyone who helps!
_N3XU5_ said:
Hello everyone,
Last week I flashed CM12 onto my G3, I have TWRP installed as my recovery.
I may have to send my G3 in for repair and if so plan to use the LG Flash tools to do so. I am worried that by doing so I will lose my EFS and modem. I flashed just the CM12 rom and Gapps, so would the stock modem and EFS still be the same as before I flashed CM12? I can currently backup both using TWRP, but will this modem and EFS be correct for my application of restoring back to stock?
Thanks to anyone who helps!
Click to expand...
Click to collapse
hey
i just start using this phone-but stock rom may contain whole files you need.modem,...
if have aware of anything see this post
and also find your region stock rom for time you failed everything and need to back to fist place
_N3XU5_ said:
Hello everyone,
Last week I flashed CM12 onto my G3, I have TWRP installed as my recovery.
I may have to send my G3 in for repair and if so plan to use the LG Flash tools to do so. I am worried that by doing so I will lose my EFS and modem. I flashed just the CM12 rom and Gapps, so would the stock modem and EFS still be the same as before I flashed CM12? I can currently backup both using TWRP, but will this modem and EFS be correct for my application of restoring back to stock?
Thanks to anyone who helps!
Click to expand...
Click to collapse
Hi there.
Your EFS never changes it does not matter which ROM you flash. Before you bring the phone back to stock with LG FlashTool please backup your EFS with TWRP!!!
Secondly, if you haven't flashed any other modem (I assume you were already on Lollipop before flashing CM12) then the modem is the same as stock. Please backup that also with TWRP!!!
Save both the EFS and modem on EXTERNAL MicroSD card or better transfer to a computer.
Lastly is that you must choose the right KDZ or TOT+DLL file for you phone!!!!!! When you bring back to stock anyway, both the EFS and the necessary modem will be included when flashing with LG FlashTool.
Have a look here and search more help http://forum.xda-developers.com/showthread.php?t=2785089
Hope this helps you and if I did please press the thanks button.
Hello.
I kinda would like to try the LG G3s Lollipop firmware but I have a question, if I upgraded to lollipop and then root and installed TWRP would I be able to return to KitKat using my 4.4.2 nandroid backup (In case I didn't like it or battery was poor) or would the baseband have a conflict and not work. Also I am currently rooted now on KitKat with TWRP installed, if I were going to update how would I do it without bricking? Do I have to unroot and uninstall xposed?
Anyone?
davis the droid said:
Hello.
I kinda would like to try the LG G3s Lollipop firmware but I have a question, if I upgraded to lollipop and then root and installed TWRP would I be able to return to KitKat using my 4.4.2 nandroid backup (In case I didn't like it or battery was poor) or would the baseband have a conflict and not work. Also I am currently rooted now on KitKat with TWRP installed, if I were going to update how would I do it without bricking? Do I have to unroot and uninstall xposed?
Click to expand...
Click to collapse
You can downgrade to KitKat with Nandroid
Johnny TDN said:
You can downgrade to KitKat with Nandroid
Click to expand...
Click to collapse
Okay, and this wouldn't cause a baseband conflict with stock 4.4? Or cause modems to not work anymore?
davis the droid said:
Okay, and this wouldn't cause a baseband conflict with stock 4.4? Or cause modems to not work anymore?
Click to expand...
Click to collapse
It depends on the backup you have.
You can definitely downgrade the G3 using kdz or tot files, but they contain the baseband and modems within themselfs.
engmia said:
It depends on the backup you have.
You can definitely downgrade the G3 using kdz or tot files, but they contain the baseband and modems within themselfs.
Click to expand...
Click to collapse
The backup I have contains: Boot, Cache, Data, EFS, and System partitions... A full Nandroid backup... I have almost all the KDZ files for the US990 but need the 10c firmware for it as that is what I am on, I have been unable to find the 10c firmware and that's why I want to know if a full Nandroid backup can get me from stock lollipop back to 10c kitkat
davis the droid said:
The backup I have contains: Boot, Cache, Data, EFS, and System partitions... A full Nandroid backup... I have almost all the KDZ files for the US990 but need the 10c firmware for it as that is what I am on, I have been unable to find the 10c firmware and that's why I want to know if a full Nandroid backup can get me from stock lollipop back to 10c kitkat
Click to expand...
Click to collapse
If I'm not mistaken the EFS partition contained the modem but not the bootloader.
Custom ROM zips shouldn't affect the EFS and bootloader anyway, but you should have a backup of the EFS just in case.
And you'll always be able to downgrade using a flash tool and KDZ or TOT files.
Also I recommend trying a 7.1.1 AOSP ROM, performance is much better than stock plus you'll get the latest security updates.
engmia said:
If I'm not mistaken the EFS partition contained the modem but not the bootloader.
Custom ROM zips shouldn't affect the EFS and bootloader anyway, but you should have a backup of the EFS just in case.
And you'll always be able to downgrade using a flash tool and KDZ or TOT files.
Also I recommend trying a 7.1.1 AOSP ROM, performance is much better than stock plus you'll get the latest security updates.
Click to expand...
Click to collapse
Unfortunately the US990 only has two ROMs and getting 7.1.1 is very unlikely as nobody really owns that device anymore....
davis the droid said:
Hello.
I kinda would like to try the LG G3s Lollipop firmware but I have a question, if I upgraded to lollipop and then root and installed TWRP would I be able to return to KitKat using my 4.4.2 nandroid backup (In case I didn't like it or battery was poor) or would the baseband have a conflict and not work. Also I am currently rooted now on KitKat with TWRP installed, if I were going to update how would I do it without bricking? Do I have to unroot and uninstall xposed?
Click to expand...
Click to collapse
Here's my experience, I'm currently on a stock version of 4.4.2 Kitkat with TWRP 3.0. I went up to MM when it first came out, not enough of what I needed was compatible at the time (mostly xposed stuff) so I reverted to my 4.4.2 nandroid backup. Everything worked except the modem. I ended up finding one, installing and everything was the exact same. It's been a long time and I use 10R but i'm assuming the process is the same.
You don't have to uninstall TWRP, just backup everything, wipe and install new rom. If you don't like it, revert to backup. Make sure you don't delete the backup and make sure you have the latest TWRP.
Here's the link I referred to - https://forum.xda-developers.com/tm...ock-d851-30d-kdz-flashable-zips-imgs-t3367371
davis the droid said:
Unfortunately the US990 only has two ROMs and getting 7.1.1 is very unlikely as nobody really owns that device anymore....
Click to expand...
Click to collapse
That sucks. If one of them is AOSP based, I've always been getting better performance on good clean AOSP ROMs compared to stock.
Is there any way that I can make a backup of the stock rom, recovery and modem before unlocking my G4?
Hello everyone, i just need a backup of the latest stock of Korean device SM-N930S/L/k, since there is no working available firmware (Frp lock problem). If someone has a backup please share it, in order to convert the backup to flashable tar file.
Thanks you in advance.