Flashing full ROM to reset EFS - OnePlus 7 Pro Questions & Answers

Hello
Currently on 10.3.4 stable, TWRP and Magisk
EFS connectivity is working fine except for VOLTE, all the parameters indicate that it should be working but can't seem to get it to register.
I want to rest EFS and in the process return to BETA, (not liking stable features). I tried to reinstall EFS partition from TWRP EFS backup, but looking through the settings and files in the EFS nothing changed.
Questions is - if i flash or install zip Beta 18 firmware will it reset the EFS to stock based on that firmware version?
Can I do the twrp retention/ magisk swap method or do I need to completely wipe the device and re-root?
I have been reading various threads on doing a factory rest, then reinstalling magisk manager but I do not believe this will reset the EFS to 10.3.4 stock
Please correct me if any of my assumptions are incorrect or if you have a better suggestion to achieve EFS reset or both (update to Beta 18)
Thank you

pxer said:
Hello
Currently on 10.3.4 stable, TWRP and Magisk
EFS connectivity is working fine except for VOLTE, all the parameters indicate that it should be working but can't seem to get it to register.
I want to rest EFS and in the process return to BETA, (not liking stable features). I tried to reinstall EFS partition from TWRP EFS backup, but looking through the settings and files in the EFS nothing changed.
Questions is - if i flash or install zip Beta 18 firmware will it reset the EFS to stock based on that firmware version?
Can I do the twrp retention/ magisk swap method or do I need to completely wipe the device and re-root?
I have been reading various threads on doing a factory rest, then reinstalling magisk manager but I do not believe this will reset the EFS to 10.3.4 stock
Please correct me if any of my assumptions are incorrect or if you have a better suggestion to achieve EFS reset or both (update to Beta 18)
Thank you
Click to expand...
Click to collapse
You enabled VoLTE manually? Or should be enabled out the box?
There's 2 threads about how to enable VoLTE manually but this is explained better
https://forum.xda-developers.com/oneplus-7-pro/how-to/guide-activate-volte-vowifi-t4116051
Follow the steps and maybe you'll get VoLTE working
Sent from my OnePlus7Pro using XDA Labs

RokCruz said:
You enabled VoLTE manually? Or should be enabled out the box?
There's 2 threads about how to enable VoLTE manually but this is explained better
https://forum.xda-developers.com/oneplus-7-pro/how-to/guide-activate-volte-vowifi-t4116051
Follow the steps and maybe you'll get VoLTE working
Sent from my OnePlus7Pro using XDA Labs
Click to expand...
Click to collapse
I have not had success getting IMS to register and as such get VOLTE working. I have read and followed all the threads I could find, including using PDC and EFS tools. I have ripped open firmware from multiple devices and finally found an MBN (PIxel 4a) for my carrier (Koodo) with the proper VOLTE label and settings.
I updated from Beta 14 to Stable as another XDA member with the same carrier stated they had success, the only difference they were non-root.
I am not liking the stable version and will be returning to Beta but VOLTE is the thorn in my neck right now.
As I have tried so many things, I am thinking my EFS has alot of garbage files left over from all the attempts, so I want to flush and start fresh or stock, just not sure how to get it done. I thought reinstalling the EFS backup from TWRp would have done the trick but I still see the files from my attempts to get VOLTE working. I know something was reinstalled from the back up as the PDC config was reset back to Oversea_commercial. Same time I do not want to brick the device.

Related

OnePlus One... I'm pretty sure I messed up my EFS partition.

UPDATE:
I have baseband wifi and bluetooth back but my IMEI is still showing up as 0 and no signal. I know the phone is reading the sim because I can see the phone number saved on the sim info.
Also getting "OEM_NV_Backup The NV Partition is invalid!" when I boot OxygenOS
Does anyone know where I can get 16GB installs for ColorOS and OxygenOS? I have a 16GB phone but when I use the msm download tool to install ColorOS I end up with a 64GB install.
Do you have any backup for the EFS partition?
I had same problem about EFS partition and No IMEI too. So I am almost sure that flashing completely untouched official Oxygen OS downloaded straight from official site will solve your problem as it did mine. Just download "Build" from here (oneplus forum) and flash it with latest TWRP. After that you'll get your fully working network connectivity back. Then just flash any other ROM you like, but look for perfect modem first (c6 works best in Asia and c7 rest of the world, but try both if you want). All the best :fingers-crossed::good:
SaurabhMumbaiOneS said:
I had same problem about EFS partition and No IMEI too. So I am almost sure that flashing completely untouched official Oxygen OS downloaded straight from official site will solve your problem as it did mine. Just download "Build" from here (oneplus forum) and flash it with latest TWRP. After that you'll get your fully working network connectivity back. Then just flash any other ROM you like, but look for perfect modem first (c6 works best in Asia and c7 rest of the world, but try both if you want). All the best :fingers-crossed::good:
Click to expand...
Click to collapse
gonna try that now, should I take any other steps before flashing in twrp like wiping anything?
so I tried installing oxygen through twrp but I was getting error 7 (phone is marked as A0001 and install is marked for OnePlus). I tried using the files and instructions from the oxygen 2.14 thread and somehow my phone hard bricked lol, I've learned so much about this phone in the last 2 months.
Gonna throw ColorOS on there and try going straight to OxygenOS from there.
So I had to wipe everything (system, cache, etc) before twrp let me install oxygen. I got oxygen installed but now it loops in oneplus screen and I got this issue come up after installation finished
Some more progress... was able to install oxygen os finally and it look like I'm almost done coming back from this nightmare. Baseband is back, WiFi and Bluetooth work, now just need to see about restoring my iemi, I've found some info on how to restore imei so I'll try that tomorrow sometime after waking up. I've learned so much about this damn phone! !
My bottom screen has also stopped working. The replacement screen you brought from, it is original or clone?? How does it feel to the screen when you buyed the phone from your friend. And i hope you'll get back your imei too
Rex2688 said:
My bottom screen has also stopped working. The replacement screen you brought from, it is original or clone?? How does it feel to the screen when you buyed the phone from your friend. And i hope you'll get back your imei too
Click to expand...
Click to collapse
It's not original. Screen is fine the only downside to non oem front assembly is that that capacitive buttons will not be as bright, some have reported that they don't light up at all, seems to be luck of the draw.
intehweeds said:
Some more progress... was able to install oxygen os finally and it look like I'm almost done coming back from this nightmare. Baseband is back, WiFi and Bluetooth work, now just need to see about restoring my iemi, I've found some info on how to restore imei so I'll try that tomorrow sometime after waking up. I've learned so much about this damn phone! !
Click to expand...
Click to collapse
As I can see from your screenshot from previous reply, you are not using official ROM. Completely official ROM is named as "OnePlus_Bacon_OxygenOS_201601190107". There was no need to wipe internal storage. Use this guide to modify the updater script. It worked for me perfectly. Then flash it and just boot into ROM. I was able to recover everything including IMEI number by this method.
And yeah, I feel the same way. I've learned so much from our beloved Bacon :laugh:
intehweeds said:
Some more progress... was able to install oxygen os finally and it look like I'm almost done coming back from this nightmare. Baseband is back, WiFi and Bluetooth work, now just need to see about restoring my iemi, I've found some info on how to restore imei so I'll try that tomorrow sometime after waking up. I've learned so much about this damn phone! !
Click to expand...
Click to collapse
You have baseband so your imei is back
yet another update
installed oxygenos with twrp, I have baseband wifi and everything but no data signal and my IMEI is 0
I've hit yet another wall :crying:
Why isn't there a 16GB version of ColorOS and OxygenOS? When I install ColorOS via msm download tool I end up with a 64GB install, I think this might be causing my "OEM_NV_Backup The NV partition is invalid!" issues as well.
Just need to resolve those two issues, bad nv partition and my IMEI being 0
Anybody know where I can get a 16GB version of colorOS, I have a feeling I overlooked something I was supposed to tweak
giaur said:
You have baseband so your imei is back
Click to expand...
Click to collapse
That's what I thought but my IMEI still shows up as 0
I don't understand why you are not flashing official Oxygen OS even after saying it solved each and everything for me?? And since it is official, it is bound to support 16 GB variant as well.
http://forum.xda-developers.com/oneplus-one/general/tool-oneplusrecovery-tool-v1-0-restore-t2991851
Ok, so the link I posted should be a last resort. You will find a recovery tool that I used when my IMEI would not return correctly. Follow all instructions, but do note that this will completely wipe everything, and if I remember correctly, that includes all personal files. The tool should land you back on the original software (like CM11S). I say try EVERYTHING else people tell you first before doing this. You're essentially starting over your phone. Good luck!
EDIT: Your recovery will be stock as well.
SaurabhMumbaiOneS said:
I don't understand why you are not flashing official Oxygen OS even after saying it solved each and everything for me?? And since it is official, it is bound to support 16 GB variant as well.
Click to expand...
Click to collapse
I did flash the official one. I used the link from the oneplus page that takes me to a forum post. At first I wasn't able to do it with twrp but afterwards I was able to
I did it once with the tool they provided and a second time through twrp, imei still 0
Inflection said:
http://forum.xda-developers.com/oneplus-one/general/tool-oneplusrecovery-tool-v1-0-restore-t2991851
Ok, so the link I posted should be a last resort. You will find a recovery tool that I used when my IMEI would not return correctly. Follow all instructions, but do note that this will completely wipe everything, and if I remember correctly, that includes all personal files. The tool should land you back on the original software (like CM11S). I say try EVERYTHING else people tell you first before doing this. You're essentially starting over your phone. Good luck!
EDIT: Your recovery will be stock as well.
Click to expand...
Click to collapse
done this already and still IMEI is 0
intehweeds said:
done this already and still IMEI is 0
Click to expand...
Click to collapse
Aww, I'm sorry man. Best of luck finding a solution.

Can't use twrp on oreo, it's asking for decryption key

I updated to oreo but after flashing twrp I noticed that I can't use it because it's asking for decryption key.
How do I fix this? I found some post with a method to flash the rom without encryption but I'd like to keep the encryption if possible.
I think a factory reset fixed it the last time on nougat but last night my phone froze mid wipe which broke pretty much everything and took me a while to fix so I want to make sure this helps before doing it again
JimZiii said:
I updated to oreo but after flashing twrp I noticed that I can't use it because it's asking for decryption key.
How do I fix this? I found some post with a method to flash the rom without encryption but I'd like to keep the encryption if possible.
I think a factory reset fixed it the last time on nougat but last night my phone froze mid wipe which broke pretty much everything and took me a while to fix so I want to make sure this helps before doing it again
Click to expand...
Click to collapse
TWRP is not fully supported under Oreo. It can't handle the full disk encryption. I've read that it is possible to set PIN / password *before* TWRP is installed and then it would work with the pass or pin you set before. But this didn't work for me. And I think there is no point in using it. Backup / restore function don't work and there might be more functions do not work.
If it's for magisk, there is also a way to install it without TWRP and / or there is no need to have access to storage. Installer just patches the ramdisk and you're good to go in ignoring the errors.
Sent from my FRD-L09 using XDA Labs
cypher187 said:
TWRP is not fully supported under Oreo. It can't handle the full disk encryption. I've read that it is possible to set PIN / password *before* TWRP is installed and then it would work with the pass or pin you set before. But this didn't work for me. And I think there is no point in using it. Backup / restore function don't work and there might be more functions do not work.
If it's for magisk, there is also a way to install it without TWRP and / or there is no need to have access to storage. Installer just patches the ramdisk and you're good to go in ignoring the errors.
Sent from my FRD-L09 using XDA Labs
Click to expand...
Click to collapse
So what are you using instead if you want to flash something? I found some posts saying you can get twrp working with the encryption if you do a factory reset and data format in twrp, that way you should get encryption that twrp can read but I've tried this several times and my phone refuses to boot every time, it's not even boot looping, it just stays on that blue honor loading screen and with the little animation in the text so it didn't freeze. If I then try to do a factory reset in stock recovery it stops on 99%, forcing me to reboot, it then starts over and jumps to 100 and when it boots up pretty much all apps are gone, even system apps and keyboard apps so you can't type. If I try factory reset again the same thing happens, stops at 99 and so on
Now I have to recover it through erecovery.
Yea, I patched stock boot in the manager instead
JimZiii said:
So what are you using instead if you want to flash something? I found some posts saying you can get twrp working with the encryption if you do a factory reset and data format in twrp, that way you should get encryption that twrp can read but I've tried this several times and my phone refuses to boot every time, it's not even boot looping, it just stays on that blue honor loading screen and with the little animation in the text so it didn't freeze. If I then try to do a factory reset in stock recovery it stops on 99%, forcing me to reboot, it then starts over and jumps to 100 and when it boots up pretty much all apps are gone, even system apps and keyboard apps so you can't type. If I try factory reset again the same thing happens, stops at 99 and so on
Now I have to recover it through erecovery.
Yea, I patched stock boot in the manager instead
Click to expand...
Click to collapse
I didn't come in the situation to want to flash sth - except magisk. And I didn't want to try it as it gains no access to internal storage.
Boot screen takes up to 30 mins or more after formatting storage. Kernel encrypts it during this time. I cannot say if TWRP is able to read this encryption since it is hardware based. I think it is possible as TWRP should use same kernel on treble ROMs - as far as I know.
So... Just being very patient could make it - theoretically.
Let me know if it can :good:
Sent from my FRD-L09 using XDA Labs
JimZiii said:
I updated to oreo but after flashing twrp I noticed that I can't use it because it's asking for decryption key.
How do I fix this? I found some post with a method to flash the rom without encryption but I'd like to keep the encryption if possible.
I think a factory reset fixed it the last time on nougat but last night my phone froze mid wipe which broke pretty much everything and took me a while to fix so I want to make sure this helps before doing it again
Click to expand...
Click to collapse
Try removing pin/password in settings and see if it still asks for key.
ante0 said:
Try removing pin/password in settings and see if it still asks for key.
Click to expand...
Click to collapse
It does. And I tried it already right after flashing RROS system image (treble) and before setting a PIN and / or after removing PIN.
Look here https://forum.xda-developers.com/honor-8/help/internal-storage-encryption-t3452737 for background knowledge about this encryption.
Only way to get TWRP fully working on our device is to remove encryption through formatting the storage. But the kernel will encrypt every time while booting and TWRP will not be able to access storage anymore.
With the Nougat custom ROMs this was not relevant because they were using LOS kernel not the stock one. Treble ROMs are using stock kernel - which is, of course, an advantage.
And I didn't get TWRP to work *with* encryption (with entering PIN or whatsoever). I hope anybody can and tell me how to do or what I did wrong
Also I want a (safe) way to use it. Specially as I know that it's use is not supported by OpenKirin Team it should be safe before I really want to use it.
Sent from my FRD-L09 using XDA Labs
cypher187 said:
It does. And I tried it already right after flashing RROS system image (treble) and before setting a PIN and / or after removing PIN.
Look here https://forum.xda-developers.com/honor-8/help/internal-storage-encryption-t3452737 for background knowledge about this encryption.
Only way to get TWRP fully working on our device is to remove encryption through formatting the storage. But the kernel will encrypt every time while booting and TWRP will not be able to access storage anymore.
With the Nougat custom ROMs this was not relevant because they were using LOS kernel not the stock one. Treble ROMs are using stock kernel - which is, of course, an advantage.
And I didn't get TWRP to work *with* encryption (with entering PIN or whatsoever). I hope anybody can and tell me how to do or what I did wrong
Also I want a (safe) way to use it. Specially as I know that it's use is not supported by OpenKirin Team it should be safe before I really want to use it.
Sent from my FRD-L09 using XDA Labs
Click to expand...
Click to collapse
You can Format Data (removes encryption) and edit /vendor/etc/fstab.xxxx and remove the fileencryption line on /data.
I don't have an Honor 8 so I can't check it, but this is how it was done on Mate 9/10 before we got TWRP with decryption on Oreo.
Of course, flashing a new firmware will replace fstab so you'd have to edit it again/restore previously edited one.
Edit: Also, for fun, default password for decryption is "default_password", so you could try that. It most likely will do nothing. This is done automatically when you have no password/pin set.
cypher187 said:
I didn't come in the situation to want to flash sth - except magisk. And I didn't want to try it as it gains no access to internal storage.
Boot screen takes up to 30 mins or more after formatting storage. Kernel encrypts it during this time. I cannot say if TWRP is able to read this encryption since it is hardware based. I think it is possible as TWRP should use same kernel on treble ROMs - as far as I know.
So... Just being very patient could make it - theoretically.
Let me know if it can :good:
Sent from my FRD-L09 using XDA Labs
Click to expand...
Click to collapse
Oh ok, never knew it could take that long but I guess it makes sense. At one attempt I even waited 20-30min ?
I'll give it another shot when I got some time over.
But I just finished restoring everything from hisuite and changing back all my settings for the 6th time since hisuite don't save your system settings.
Do you know if it's possible to make a nand backup without twrp? Getting a complete nandroid backup would really help when you're not sure if the factory reset will help
---
JimZiii said:
Oh ok, never knew it could take that long but I guess it makes sense. At one attempt I even waited 20-30min
I'll give it another shot when I got some time over.
But I just finished restoring everything from hisuite and changing back all my settings for the 6th time since hisuite don't save your system settings.
Do you know if it's possible to make a nand backup without twrp? Getting a complete nandroid backup would really help when you're not sure if the factory reset will help
Click to expand...
Click to collapse
Unfortunately there is no way. Only with HiSuite or sth else. If your device is rooted you can use TitaniumBackup. It can provide a more complete backup of apps, app-data and settings.
Sent from my FRD-L09 using XDA Labs
Hi.
I use the fstab mod and do a full data format in TWRP. After that the data partition decrypted, but FRP locked, oem unlock grayed and I can't do set my google account. If I want to set the google account, the process is start but the screen is turn to black (navigation buttons show on the bottom of the screen) and nothing more. Some seconds later its drop me back to settings page.
TWRP installed.
Bootloader unlocked
Rooted with Magisk
FRP locked
Stock recovery not flashed back because HWMT show FRP locked
Mumtaz77 said:
Hi.
I use the fstab mod and do a full data format in TWRP. After that the data partition decrypted, but FRP locked, oem unlock grayed and I can't do set my google account. If I want to set the google account, the process is start but the screen is turn to black (navigation buttons show on the bottom of the screen) and nothing more. Some seconds later its drop me back to settings page.
TWRP installed.
Bootloader unlocked
Rooted with Magisk
FRP locked
Stock recovery not flashed back because HWMT show FRP locked
Click to expand...
Click to collapse
Install a full package via dload method. Take an 'unbrick' guide from the guides section if you need. You can use a 'FullOTA' package for your region which you can download with FirmwareFinder by TeamMT.
Sent from my FRD-L09 using XDA Labs

[SOLVED] EFS damaged, imei null and have no backup

Hello guys,
So i have experienced alot of efs problems in the past and i managed to fix them all but now i can't really do anything about it, i tried flashing the combination firmware i flashed the correct file (i flashed U3) but i keep getting an bootloader exception error, so i went back to stock and tried again, got bootloader exception error again, now i am back at stock and i have no idea what to do i asked a repair center and he said 60€ i am not paying 60€ for a stupid code that turned in to 000000000000000 my baseband is NOT unknown and my signal bar keeps changing beween no signal and the normal signal bar it i have never experienced a changing signal bar like that before i hope someone can help me with this because i can't make any phone calls since 2 weeks or more
Thank alot guys, and sorry for my bad english, english is not my main language
go and pay 60€, u can't back the original IMEI only with soft, u need a box to repair
Had similar issue on S8. Downloaded latest firmware. Extracted the zipfile. And flashed the corresponding CP and BL file.
(Modem and bootloader)
Spacewide said:
Had similar issue on S8. Downloaded latest firmware. Extracted the zipfile. And flashed the corresponding CL and BL file.
Click to expand...
Click to collapse
Did that work?
Picklewickle said:
Did that work?
Click to expand...
Click to collapse
Yes it did! Happened to me and it's worth the try because you can't do anything wrong with this method.
Downloading the firmware can take some time, but I found a fast mirror after googling around.
Best of luck and please post an update
Sent from my SM-G950F using Tapatalk
Spacewide said:
Yes it did! Happened to me and it's worth the try because you can't do anything wrong with this method.
Downloading the firmware can take some time, but I found a fast mirror after googling around.
Best of luck and please post an update
Click to expand...
Click to collapse
Ok thanks for the help i will try it tommorow and then i will update you
Spacewide said:
Yes it did! Happened to me and it's worth the try because you can't do anything wrong with this method.
Downloading the firmware can take some time, but I found a fast mirror after googling around.
Best of luck and please post an update
Sent from my SM-G950F using Tapatalk
Click to expand...
Click to collapse
This actually worked! Thank you so much!
Spacewide said:
Had similar issue on S8. Downloaded latest firmware. Extracted the zipfile. And flashed the corresponding CP and BL file.
(Modem and bootloader)
Click to expand...
Click to collapse
Thanks for the tip, but unfortunately, it didn't work i flashed the latest cp and bl file and it didn't bring back my imei
any other solutions?
I already tried flashing the combination rom with odin v3.11.1 and i selected auto reboot, re-partition, nand erease all, f.reset time, efs clear and bootloader update also no luck, i clicked on ime and entered *#06# to see or i got my imei back and nope i also wiped my full efs before flashing the rom, this problem sounds more serious then i've ever thought it would be
it would be great to have some idea's to fix this...
last time when i had this problem on my phone i wiped my full efs and installed sac23's s9 port rom suprisingly it did help me bring back my imei now i did that again and no luck, the problem also is that i used twrp to delete my efs now twrp doesnt recognize my efs so it shows that my /efs is empty and root explorer says that it has files in it i need to wipe efs with twrp like i did before because if i delete it while i have my phone on it gets rebuilded again? files keep coming back but my imei, signal are not coming back its weird, i tried samsung kies and smart switch but it says SM-G935F not supported
the combination rom also keeps getting cp crash error, it so after a short moment in the combination rom it reboots in cp crash mode or something like that with green and red text
UPDATE: IMEI is NOT 0 anymore, but its not correct, the imeisv numer is now at the end of the imei number which means its now a 16 number imei, it also says simcard not provisionized please help me guys
UPDATE: [SOLVED] I can use my phone 100% again,
I fixed it I accidentally switched my simcard to a simcard that was suspended,
Now for the people also have problems,
1. Go to twrp
2. Make sure Efs has been checked at mount
3. Go to file manager
4. Go to /efs and delete everything in it (DO NOT DELETE /EFS IT SELF OR ELSE PHONE WONT BOOT!! ONLY DELETE WHATS IN IT)
5. now flash a new rom directly without restarting your phone after deleting whats in your efs or else your efs will rebuild, now it should work, if your imei is changed and it says sim not provisoned then just change your simcard because that error message means you have been suspended or your sim is inactive
Picklewickle said:
UPDATE: [SOLVED] I can use my phone 100% again,
I fixed it I accidentally switched my simcard to a simcard that was suspended,
Now for the people also have problems,
1. Go to twrp
2. Make sure Efs has been checked at mount
3. Go to file manager
4. Go to /efs and delete everything in it (DO NOT DELETE /EFS IT SELF OR ELSE PHONE WONT BOOT!! ONLY DELETE WHATS IN IT)
5. now flash a new rom directly without restarting your phone after deleting whats in your efs or else your efs will rebuild, now it should work, if your imei is changed and it says sim not provisoned then just change your simcard because that error message means you have been suspended or your sim is inactive
Click to expand...
Click to collapse
What rom can you flash within TWRP? I have latest stock installed (G930W8VLU5CRI2)
peterman6 said:
What rom can you flash within TWRP? I have latest stock installed (G930W8VLU5CRI2)
Click to expand...
Click to collapse
Twrp can flash all roms aslong its a rom for your phone it can be flashed
Picklewickle said:
Twrp can flash all roms aslong its a rom for your phone it can be flashed
Click to expand...
Click to collapse
Also do full wipe when installing a custom rom
Picklewickle said:
Also do full wipe when installing a custom rom
Click to expand...
Click to collapse
So basically I can flash any Oreo custom rom and the EFS would repair ?
I have the Z3X box and I tried to repair the IMEI by entering my IMEI but unfortunately I made a 1 digit mistake.
The IMEI was written ok but did not Patch the certificate, at the time was on Binary 2, the phone got automatically update with latest stock (Binary 5), now can't repair IMEI nor patch the certificate (it would require downgrade to 7.0 which is not possible with Binary 3+).
Any idea ?
peterman6 said:
So basically I can flash any Oreo custom rom and the EFS would repair ?
I have the Z3X box and I tried to repair the IMEI by entering my IMEI but unfortunately I made a 1 digit mistake.
The IMEI was written ok but did not Patch the certificate, at the time was on Binary 2, the phone got automatically update with latest stock (Binary 5), now can't repair IMEI nor patch the certificate (it would require downgrade to 7.0 which is not possible with Binary 3+).
Any idea ?
Click to expand...
Click to collapse
I think there is more chance to make it work if there are cscs built in (do not install superman rom!! It has incorrect cscs) and please dial *#1234# and tell me what it says at cp also try z3x again
Picklewickle said:
I think there is more chance to make it work if there are cscs built in (do not install superman rom!! It has incorrect cscs) and please dial *#1234# and tell me what it says at cp also try z3x again
Click to expand...
Click to collapse
I erased the efs directory content, installed RR-O-6.1.0-2018-0908 rom and pico gapps, booted the phone but the there are no bars (emergency calls only).
Dialed *#1234#, does nothing, tried with Z3X but no modem detected, checked the status IMEI is all 0000...
Baseband is G930W8VLU5CRI2
???
peterman6 said:
I erased the efs directory content, installed RR-O-6.1.0-2018-0908 rom and pico gapps, booted the phone but the there are no bars (emergency calls only).
Dialed *#1234#, does nothing, tried with Z3X but no modem detected, checked the status IMEI is all 0000...
Baseband is G930W8VLU5CRI2
???
Click to expand...
Click to collapse
Weird, for me this did work make sure you didnt reboot the phone after deleting efs content also make sure the rom does modify efs like some roms install cscs
Picklewickle said:
Weird, for me this did work make sure you didnt reboot the phone after deleting efs content also make sure the rom does modify efs like some roms install cscs
Click to expand...
Click to collapse
Nope, after erasing the efs content, I flashed custom rom and gapps, then rebooted but got stuck, so I went back in TWRP, erased cache/dalvik, check efs directory and all the files where rebuilt.
can you tell me whitch custom rom you used, will try to do the same.thx
peterman6 said:
Nope, after erasing the efs content, I flashed custom rom and gapps, then rebooted but got stuck, so I went back in TWRP, erased cache/dalvik, check efs directory and all the files where rebuilt.
can you tell me whitch custom rom you used, will try to do the same.thx
Click to expand...
Click to collapse
I used kingrom s7e

Lost imei after factory reset and root

Hi guys,
I have a slight problem here, I was using my rooted with magisk and running lineageos17. Unfortunately, bluetooth wasnt working so I reverted back to stock, which fixed the bluetooth problem. I tried rooting the thing then with this method:
https://www.xda-developers.com/install-android-oreo-samsung-galaxy-s7-exynos/
Unfortunately though, this killed my imei. I tried restoring my efs partition with twrp; even tried reflashing the stock firmware, all to no avail, my imei is gone.
Is there any way I can restore it or have I turned my phone into a fancy paperweight now?
Would be cool if anyone could offer me some help,
best wishes,
derelektrischemoench
// edit: I managed to get twrp installed and was able to restore my twrp- backup which i had made before this whole endeavour and voila: the device is back online, has an imei and is able to connect to a network. Hell yea. Thread can be closed, I guess.

What should I backup?

Hello, I have been struggling with an issue in my moto e5. I unlocked bootloader & installed custom roms. Then I thought I should go back to the stock rom & I did so. But after booting up, mobile data doesn’t work (No service). Auto rotation doesn’t work. Also it can't detect when I pick up my phone. But in custom roms, there is no issue like this! I flashed stock rom using rescue and smart assistant tool. I also did flash using fastboot commands batch file. But the issue persists.
Next I found that imei is lost in stock rom. So I installed custom rom, backed up "efs" from twrp, installed stock rom & restored the efs. I got my imei numbers back! But no service and auto rotation issue is still there along with other disabled sensors.
What else should I backup and restore? Or what should be my next steps?
One always backs up the whole Stock Andoid before flashing anything. Only blue-eyed people do not.
jwoegerbauer said:
One always backs up the whole Stock Andoid before flashing anything. Only blue-eyed people do not.
Click to expand...
Click to collapse
Yeah,, my bad..

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