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.
Related
Hi All
I've just got myself an LG SU640 (running Gingerbread V10p) and I now want to root and install custom firmware on my phone, but before doing that I want to back up my EFS and modem files so that I don't lose my IMEI after flashing a new firmware.
Can someone please guide on how to do that?
Thanks.
Flashing a rom should not affect your imei or radios based on my own experience with the P930.
just do it
juzerali said:
Hi All
I've just got myself an LG SU640 (running Gingerbread V10p) and I now want to root and install custom firmware on my phone, but before doing that I want to back up my EFS and modem files so that I don't lose my IMEI after flashing a new firmware.
Can someone please guide on how to do that?
Thanks.
Click to expand...
Click to collapse
there are no problems regarding imei number after flashing official firmware or custom roms it will not affect your imei number i have flashed many custom roms on lg su640 and lg lu6200 i have not face any problems like imei no.
Thanks for the information, guys.
Hi all,
I'm planning to flash my phone back to 4.1.1 via Odin and then to to 4.1.2 firmware, found on Sammobile to carry out the unlock method.
However, I am on the DMF2 baseband, and have heard that flashing a new modem over this will mess up the IMEI.
Will this happen if I'm only flashing a stock rom over it?
Thanks in advance!
I used to flash 4.1.1 stock ROMs onto my N7100 from 4.1.2
I would go into a bootloop after flashing it but booting to recovery and wiping data and cache solved my problem. Just backup your EFS to be on the safe side though
Sent from my Nexus 7 using xda app-developers app
ShahinTehShiz said:
Hi all,
I'm planning to flash my phone back to 4.1.1 via Odin and then to to 4.1.2 firmware, found on Sammobile to carry out the unlock method.
However, I am on the DMF2 baseband, and have heard that flashing a new modem over this will mess up the IMEI.
Will this happen if I'm only flashing a stock rom over it?
Thanks in advance!
Click to expand...
Click to collapse
flashing new modem will not mess up IMEI.
but to be safe, back up your EFS before you do.
Normally IMEI will be messed up if EFS corrupted during the flashing.
Most of the time, it will happened if you change ROM with different base version (and normally happened when you never read the instructions of the OP very well).
So, when you want to downgrade, please do backup your EFS first (especially if you are coming from 4.3, due to different bootloader/partition of internal storage).
Sent from the corner of this rounded earth.
I flashed a 20b ROM but now want to go back to kitkat so I can use my unlimited wifi tethering.
The ROM thread says to flash the 10r bootstrap before restoring to my saved kitkat nandroid, but when I do and then reboot it, I have no Data.
Im pretty sure I am still using the 20b modem. What do I need to flash to restore back to kitkat?
tuck4x4 said:
I flashed a 20b ROM but now want to go back to kitkat so I can use my unlimited wifi tethering.
The ROM thread says to flash the 10r bootstrap before restoring to my saved kitkat nandroid, but when I do and then reboot it, I have no Data.
Im pretty sure I am still using the 20b modem. What do I need to flash to restore back to kitkat?
Click to expand...
Click to collapse
If you didn't backup your efs then you're stuck on lollipop ?
Any update or changes to this? I use an app at work that does not work on Lollipop at all.
I NEED Kitkat...
Give this method a try...
http://xda-developers1.blogspot.com/2015/04/lte-lollipop-issue-fix.html
Other than having your phone replaced, this is the only method I know of that actually works for restoring LTE after a downgrade. Here's a link to the original thread...
http://forum.xda-developers.com/tmobile-lg-g3/help/lte-lollipop-issue-fix-t3075637
Hey everyone. I'm having some troubles with every custom ROM I install on my S3 T-Mobile (d2tmo) so I want to come back to Stock ROM. I've been watching some tutorials, but lot of them are pretty old, and none is for the Galaxy S3.
So, what do I need to do to go back to Stock ROM?
Should I do a full wipe from recovery (TWRP) and then flash stock ROM via Odin?
The custom ROM I flashed is 6.0.1. The phone had 4.3 when I flashed the custom ROM.
Am I right about what I think I should do?
Thanks in advance. :good:
Yep. The firmware you'll use in Odin should be a .tar.md5 file.
Just flash the latest stock rom from sammobile.com using Odin. No need to do anything before flashing the stock ROM.
After flashing the stock ROM, immediately boot into recovery and perform a factory wipe.
audit13 said:
Just flash the latest stock rom from sammobile.com using Odin. No need to do anything before flashing the stock ROM.
After flashing the stock ROM, immediately boot into recovery and perform a factory wipe.
Click to expand...
Click to collapse
tonytien said:
Yep. The firmware you'll use in Odin should be a .tar.md5 file.
Click to expand...
Click to collapse
Thank you very much for answering my questions guys! Everything turned out ok!
But I have a doubt about a little think that I hope you could help me.
Before flashing the stock rom I was planning on backing up my efs folder from the TWRP,version 2.8.70 for my s3 (d2tmo), but when I try to do a backup, there no "EFS Folder" option, however, on my other phone, a Galaxy Note 3 Exynos Variant (International Version) when I try to perform a backup there is a EFS folder option for backing up. It is also a TWRP recovery, and same version. 2.8.7.0. I know the phones are completely different, but, why if I'm using the same custom recovery and same version I can't do a EFS Folder backup from the backup option?
I hope I made myself clear about my question. Sorry for my English BTW, it is not my first language.
Thanks in advance!
Maybe this will help although it requires root: http://forum.xda-developers.com/s6-edge-plus/development/updating-t3210266
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.