I have a SM-N910G with Unofficial LineagOS 18.1 ROM. First things first:
I KNOW XDA forums is not responsible for issues with the device.
I clean installed/flashed the file(TWRP recovery and formatted data folder) given in the thread and only faced the issue after this.
SIM does work in other android devices(Galaxy Tab A with stock firmware, in my case).
Yes, I have correctly inserted the card and tried doing everything on the internet(Removing sim and battery, turning on and off airplane mode, etc.)
My device does have an IMEI number, working WIFI and Bluetooth.
I also tried going back to the stock rom, and the sim card worked. Then, I flashed the correct twrp and backed up the efs partition(in the stock rom) then followed the instruction on the post to flash lineageos and gapps , and then finally restored the efs backup. But, that still didn't work. Pls help.
Note: Click on 69.png screenshot to see it
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If someone could help me I'd be very grateful.
I have cwm 6.0.3.2(0611) but was running TWRP previously. The first custom rom I installed was crdroid and today I tried to install graviton rom. I did this using TRWP. However, after installing, my SIM was not recognised and I had no IMEI and the baseband version showed 'unknown'.
I then flashed CWM and tried to re-install crdroid with the latest version but came up against the same problem. However, after installing this I also had no bootanimation. After browsing this forum for an answer, I couldn't really find anything that helped too much so I did a nandroid restore.
This worked and put me back to my stock rom.
I then tried to reflash the latest crdroid but the problems have all returned again.
Can anyone help me? I'd like to be able to flash the roms I want again but it seems that anything I'm doing is wiping the IMEI/baseband/bootanimation.
welshyoot said:
If someone could help me I'd be very grateful.
I have cwm 6.0.3.2(0611) but was running TWRP previously. The first custom rom I installed was crdroid and today I tried to install graviton rom. I did this using TRWP. However, after installing, my SIM was not recognised and I had no IMEI and the baseband version showed 'unknown'.
I then flashed CWM and tried to re-install crdroid with the latest version but came up against the same problem. However, after installing this I also had no bootanimation. After browsing this forum for an answer, I couldn't really find anything that helped too much so I did a nandroid restore.
This worked and put me back to my stock rom.
I then tried to reflash the latest crdroid but the problems have all returned again.
Can anyone help me? I'd like to be able to flash the roms I want again but it seems that anything I'm doing is wiping the IMEI/baseband/bootanimation.
Click to expand...
Click to collapse
You could try backing up your EFS partition and grabbing the Modem you had in your stable ROM. Once you flash, you could try to restore the EFS (on the rom that you have the issue on) and flash the modem if the unknown baseband/lost imei continue after that.
Cheers, I did think of something like that - I saw a few threads which suggested flashing the modem (twice?) but it seemed to me that I should be able to flash a rom without having to backup efs and restoring each time (the issue happens with every rom flash now for some reason). I saw a few similar threads but nothing with the exact same problem, and no real solutions so far.
Hi,
I very much hope you can help me with this issue.
I wanted to flashTemasek's CM 12.1 v. 14.9 on a N9005 running stock Lollipop (N905XXUGBOE9_N9005DBTGBOF1). After much reading, I believed it would be best to first downgrade to stock 4.4.2 (N9005XXUENB4_N9005DBTENB1_DBT). I then flashed TWRP 2.8.7.0 hlte 4.4. Could this be the reason? I later read that for Kitkat 4.4.2 without updates I should have rather used the 4.3 version of TWRP. I did a backup of the system including efs. After that I flashed Temasek's CM 12.1 v.14.9 doing a clean install by following the steps outlined in the thread:
Clean Installation
1. Download the appropriate ROM using links provide in the second post.
2. Download the appropriate GApps following the links in the second post.
3. Back up any and all important data.
5. WIPE DALVIK/CACHE/DATA/FACTORY RESET.
6. WIPE SYSTEM.
7. Flash the ROM in recovery.
7.1. DO NOT FIX PERMISSIONS AFTER FLASHING, doing so will cause a bootloop.
8. Flash the GApps.
9. WIPE DALVIK/CACHE (for good measure).
10. Reboot Device.
Flashing went fine, but the phone did not recognize the SIM card. Initially believing that this might be an issue with the ROM, I downgraded to Temasek's CM 12.1 v. 14 only to find that I was having similar issues. I then tried to restore the backup I created earlier but basically only got a black screen and a ton of notifications that apps had stopped working. I then tried to flash back stock kitkat (N9005XXUENB7_N9005DBTENB2) hoping that this would work with my version of TWRP but have had no success. Before causing any further trouble, I was hoping that some kind soul would be capable of and willing to help me with this. How can I recover my efs from the backup created with TWRP? And how can I finally restore my phone and hopefully end up with the ROM I was trying to flash? Any help is very much appreciated!
Thank you!
django e said:
Hi,
I very much hope you can help me with this issue.
I wanted to flashTemasek's CM 12.1 v. 14.9 on a N9005 running stock Lollipop (N905XXUGBOE9_N9005DBTGBOF1). After much reading, I believed it would be best to first downgrade to stock 4.4.2 (N9005XXUENB4_N9005DBTENB1_DBT). I then flashed TWRP 2.8.7.0 hlte 4.4. Could this be the reason? I later read that for Kitkat 4.4.2 without updates I should have rather used the 4.3 version of TWRP. I did a backup of the system including efs. After that I flashed Temasek's CM 12.1 v.14.9 doing a clean install by following the steps outlined in the thread:
Clean Installation
1. Download the appropriate ROM using links provide in the second post.
2. Download the appropriate GApps following the links in the second post.
3. Back up any and all important data.
5. WIPE DALVIK/CACHE/DATA/FACTORY RESET.
6. WIPE SYSTEM.
7. Flash the ROM in recovery.
7.1. DO NOT FIX PERMISSIONS AFTER FLASHING, doing so will cause a bootloop.
8. Flash the GApps.
9. WIPE DALVIK/CACHE (for good measure).
10. Reboot Device.
Flashing went fine, but the phone did not recognize the SIM card. Initially believing that this might be an issue with the ROM, I downgraded to Temasek's CM 12.1 v. 14 only to find that I was having similar issues. I then tried to restore the backup I created earlier but basically only got a black screen and a ton of notifications that apps had stopped working. I then tried to flash back stock kitkat (N9005XXUENB7_N9005DBTENB2) hoping that this would work with my version of TWRP but have had no success. Before causing any further trouble, I was hoping that some kind soul would be capable of and willing to help me with this. How can I recover my efs from the backup created with TWRP? And how can I finally restore my phone and hopefully end up with the ROM I was trying to flash? Any help is very much appreciated!
Thank you!
Click to expand...
Click to collapse
Who said you need 4.4 to update to cm12.1? You need 5.0 bootloader. That's what you had.
Maybe use another version of twrp. I use 2.8.5? And it's fine.
In twrp go to back up and restore. Restore by navigating to location of your back up.
kenny1991 said:
Who said you need 4.4 to update to cm12.1? You need 5.0 bootloader. That's what you had.
Maybe use another version of twrp. I use 2.8.5? And it's fine.
In twrp go to back up and restore. Restore by navigating to location of your back up.
Click to expand...
Click to collapse
Thanks! I managed to restore the imei flashing stock lollipop. I initially downgraded because it seemed to me that all instructions were based on kitkat and not much information was available on lollipop. Just wanted to make sure I followed the instructions to the letter. Stupid me...
I tried to restore efs the way you describe it, but it didn't work out for me. Thankfully, things are back to normal now and I will flash cm12.1 directly from stock lollipop now.
Thanks for taking the time to help!
I was using Nougat 7.0 Android Ice Cold Project (AICP) -12.0 was working well,
Made complete backup of this ROM/OS then booted from backup, Stuck on boot up screen, then did a clean flash of
this ROM again stuck at finally boot screen,
Then flashed ED300 CM13 MM but found no communication devices working, There might b kernel issue, I don't know.
Now I'm able to flash and use all other custom MM and LP ROMs except Nougat 7.0 and all having No communication means
no wi-fi, bluetooth, SIM card detection and signal, IEMI etc
I'm using Lenovo A6000 8GB.
Tried to install terminal emulator to change SIMs IEMI using thread by #zround, but was not able to do so bcz unknown source blocked and not working.
Setting not working and crashing,
I just needed Wi-Fi to work at least now.
Could anyone help or provide flashable kernel or firmware to fix these issues?
Or anything to revert back communication modem, or On stock ROM from recovery, Or stock recovery.
Fixed by myself. Flashed stock ROM which failed but patched the firmware
And efs, then without wiping data, dalvik cache/cache dirty flashed MM ROM and found everything working properly again.
Hi,
I'm sure someone else will have had my problem but I can't seem to find a straight forward solution.
I am wanting to upgrade my Samsung S7 Edge, SM-G935F Exynos, to the latest Lineage OS with Android 10 as Samsung are no longer supporting my phone. The phone is unlocked as supplied from Samsung.
I downloaded Odin v3.14 and successfully flashed TWRP 3.4.0.0 hero.2lte.img.tar. I activated Developer Options and OEM unlock before flashing.
I can enter TWRP but am unsure what I do regarding the Unmodified System Partition options on the 1st TWRP screen so I hit 'Keep Read Only' and then 'Reboot' only to find that the phone attempts to restart, I see the Samsung Galaxy S7 Edge splash screen which then goes off and restarts again repeatedly, so I can't check if all my data etc. is ok on the phone. I did back up Whatsapp and made s Smart Switch backup too but forgot to do Samsung & Google account backups before the flashing.
I'm assuming I've missed something out in the flashing procedure but am not sure of exactly what. I have previously flashed and upgraded Galaxy S3, S3 Mini & a Tab2 10.1 using earlier TWRP versions so it's not that I'm a total beginner. I also tried to do a rom backup via TWRP but that failed and also a wipe Dalvik cache but that also failed.
Please advise:
1. what I've done wrong if anything?
2. Best way to restore the phone without losing existing data if possible perhaps with stock rom flashing? I could try the Smart Switch Emergency Software recovery & Initialisation but I understand that resets the phone to Factory settings loosing all data.
3. Procedure to flash Lineage rom that's 'idiot proofed'?
Thanks in advance.
rebgershon said:
Hi,
I'm sure someone else will have had my problem but I can't seem to find a straight forward solution.
I am wanting to upgrade my Samsung S7 Edge, SM-G935F Exynos, to the latest Lineage OS with Android 10 as Samsung are no longer supporting my phone. The phone is unlocked as supplied from Samsung.
I downloaded Odin v3.14 and successfully flashed TWRP 3.4.0.0 hero.2lte.img.tar. I activated Developer Options and OEM unlock before flashing.
I can enter TWRP but am unsure what I do regarding the Unmodified System Partition options on the 1st TWRP screen so I hit 'Keep Read Only' and then 'Reboot' only to find that the phone attempts to restart, I see the Samsung Galaxy S7 Edge splash screen which then goes off and restarts again repeatedly, so I can't check if all my data etc. is ok on the phone. I did back up Whatsapp and made s Smart Switch backup too but forgot to do Samsung & Google account backups before the flashing.
I'm assuming I've missed something out in the flashing procedure but am not sure of exactly what. I have previously flashed and upgraded Galaxy S3, S3 Mini & a Tab2 10.1 using earlier TWRP versions so it's not that I'm a total beginner. I also tried to do a rom backup via TWRP but that failed and also a wipe Dalvik cache but that also failed.
Please advise:
1. what I've done wrong if anything?
2. Best way to restore the phone without losing existing data if possible perhaps with stock rom flashing? I could try the Smart Switch Emergency Software recovery & Initialisation but I understand that resets the phone to Factory settings loosing all data.
3. Procedure to flash Lineage rom that's 'idiot proofed'?
Thanks in advance.
Click to expand...
Click to collapse
1] You didn't formatted /data and/or flashed magisk or supersu after booting into twrp first time.
Note that you need to format /data under wipe in twrp and type yes and then again reboot in twrp. This is necessary step to disable encryption. And after that flash magisk without any reboot or flash your required rom by following your respective rom thread.
Please note that keeping system read only will cause you to flash in systemless root mode like magisk or super su in systemless mode. There is no difference between normal root mode and systemless root mode except that you will need to allow system modifications in twrp in normal root which will in turn trigger dm verity check and you will need to flash no verity zip to make phone bootable when system modification method (normal root) is selected. Plus system modification will cause certain apps to detect root easily plus increasing complications like I said above. So just keep read only and flash magisk and you will get root in systemless mode without any cons !
Here, you said you're getting a verification screen after rebooting twrp..
This can be caused either by.
1. Not formatting /data after booting twrp for first time
2. Not flashing magisk after formatting /data
3. Enabling system modifications and not flashing no verity zips/magisk
4. Oem unlock is not enabled..
2] You cannot restore data if you didn't back it up before messing with it, or you made a titanium backup/twrp backup.
Smart switch cannot flash phone anymore ..
Yes, flashing stock firmware using home_csc in odin, will not delete data and may restore your phone, but no guarantee that it will work, you can try though. Thats why its strictly advised to do backup before messing your phone in anyway..
3. Pls refer or ask in your respective rom thread.
Sent from my hero2lte using XDA Labs
shah22 said:
1] You didn't formatted /data and/or flashed magisk or supersu after booting into twrp first time.
Note that you need to format /data under wipe in twrp and type yes and then again reboot in twrp. This is necessary step to disable encryption. And after that flash magisk without any reboot or flash your required rom by following your respective rom thread.
Please note that keeping system read only will cause you to flash in systemless root mode like magisk or super su in systemless mode. There is no difference between normal root mode and systemless root mode except that you will need to allow system modifications in twrp in normal root which will in turn trigger dm verity check and you will need to flash no verity zip to make phone bootable when system modification method (normal root) is selected. Plus system modification will cause certain apps to detect root easily plus increasing complications like I said above. So just keep read only and flash magisk and you will get root in systemless mode without any cons !
Here, you said you're getting a verification screen after rebooting twrp..
This can be caused either by.
1. Not formatting /data after booting twrp for first time
2. Not flashing magisk after formatting /data
3. Enabling system modifications and not flashing no verity zips/magisk
4. Oem unlock is not enabled..
2] You cannot restore data if you didn't back it up before messing with it, or you made a titanium backup/twrp backup.
Smart switch cannot flash phone anymore ..
Yes, flashing stock firmware using home_csc in odin, will not delete data and may restore your phone, but no guarantee that it will work, you can try though. Thats why its strictly advised to do backup before messing your phone in anyway..
3. Pls refer or ask in your respective rom thread.
Thanks for your reply Shah though I'm still a bit confused by it.
UnIock OEM was enabled as was USB debugging.
Fortunately, I was able to reflash the stock rom and phone is working again but what sort of backup are you indicating in part 2. above), NAND, Smartswitch or just back up to google, Samsung & Whatsapp accounts?
In 1). of your reply you say 'You didn't formatted /data and/or flashed magisk or supersu after booting into twrp first time.
Note that you need to format /data under wipe in twrp and type yes and then again reboot in twrp. This is necessary step to disable encryption. And after that flash magisk without any reboot or flash your required rom by following your respective rom thread.'
I thought that if I do format /data my data would be lost and I want to make a NAND backup of the existing rom and data before flashing/modifying but if that doesn't loose the data, I assume then the steps are as follows:
1. Flash TWRP with Odin
2. Boot into Recovery-TWRP
3. Tap on the Read Only button on the 1st TWRP screen
4. Format /data under wipe in TWRP and tap yes and then reboot in TWRP. - Do you mean reboot the phone into TWRP of just go back into the TWRP main menu & when do I make the NAND backup?
5. Flash magisk or supersu from SD card no reboot
6. Flash Lineage OS rom from SD card.
7. Reboot.
Please correct any errors above as I've now tried 3 times since my original post without success but always managed to reflash the stock rom to get me going again.
Click to expand...
Click to collapse
rebgershon said:
Thanks for your reply Shah though I'm still a bit confused by it.
Click to expand...
Click to collapse
Thats why you read forums again and again and unless you are sure and know what you're doing, don't proceed with these things and read again.
rebgershon said:
UnIock OEM was enabled as was USB debugging.
Fortunately, I was able to reflash the stock rom and phone is working again but what sort of backup are you indicating in part 2. above), NAND, Smartswitch or just back up to google, Samsung & Whatsapp accounts?
Click to expand...
Click to collapse
Upto you which backup you prefer, saving data on separate storage is the main goal as rooting and flashing custom rom would erase all your data from phone.
rebgershon said:
I thought that if I do format /data my data would be lost and I want to make a NAND backup of the existing rom and data before flashing/modifying but if that doesn't loose the data, I assume then the steps are as follows
Click to expand...
Click to collapse
What you mean exactly ? What doesn't loose the data ? Flashing custom rom first time/rooting always erases your data and yes you need to backup before flashing/modifying.
rebgershon said:
1. Flash TWRP with Odin
2. Boot into Recovery-TWRP
3. Tap on the Read Only button on the 1st TWRP screen
4. Format /data under wipe in TWRP and tap yes and then reboot in TWRP. - Do you mean reboot the phone into TWRP of just go back into the TWRP main menu & when do I make the NAND backup?
5. Flash magisk or supersu from SD card no reboot
6. Flash Lineage OS rom from SD card.
7. Reboot.
Click to expand...
Click to collapse
In step 4. Reboot again in twrp after formatting /data.
When do you make nand backup?? Lol, at this point your phone would have nothing to backup, you should have made a backup the first time you tried modifying your phone. Because flashing stock rom like you said you did many times, already formats the phone.
If you mean you want to backup your phone again, then you can't backup in twrp in this stage. Backup before flashing twrp through any means.
Step 5 is correct, I don't know about step 6. I never flashed lineage and have no experience about it. Pls refer lineage's respective rom thread for exact steps. Good luck
Sent from my hero2lte using XDA Labs
shah22 said:
Thats why you read forums again and again and unless you are sure and know what you're doing, don't proceed with these things and read again.
Upto you which backup you prefer, saving data on separate storage is the main goal as rooting and flashing custom rom would erase all your data from phone.
What you mean exactly ? What doesn't loose the data ? Flashing custom rom first time/rooting always erases your data and yes you need to backup before flashing/modifying.
In step 4. Reboot again in twrp after formatting /data.
When do you make nand backup?? Lol, at this point your phone would have nothing to backup, you should have made a backup the first time you tried modifying your phone. Because flashing stock rom like you said you did many times, already formats the phone.
If you mean you want to backup your phone again, then you can't backup in twrp in this stage. Backup before flashing twrp through any means.
Step 5 is correct, I don't know about step 6. I never flashed lineage and have no experience about it. Pls refer lineage's respective rom thread for exact steps. Good luck
Sent from my hero2lte using XDA Labs
Click to expand...
Click to collapse
Thanks again Shah for your reply/help.
I followed the instructions and got the lineage rom installed and Gapps but I don't think Gapps installed properly as I wasn't able to restore any of the saved data from my google account and it wouldn't allow me to add any other accounts except email so for now I've restored the stock rom and my data.
Is there another Android 10 rom you can recommend besides lineage that will have a similar appearance to Samsung?
rebgershon said:
Thanks again Shah for your reply/help.
I followed the instructions and got the lineage rom installed and Gapps but I don't think Gapps installed properly as I wasn't able to restore any of the saved data from my google account and it wouldn't allow me to add any other accounts except email so for now I've restored the stock rom and my data.
Is there another Android 10 rom you can recommend besides lineage that will have a similar appearance to Samsung?
Click to expand...
Click to collapse
I don't recommend any rom except a stock rooted debloated one.. (like Alexndr's devbase)
Reason : because full custom roms have a high chance to mess up your phone's efs and permanent soft brick issues.
But, I'm in love with infinity wallpapers, dark mode and android 10 in general like all others these days.. so if you really want samsung android 10 for S7 edge, then Floyd V4 is your best bet.. see on rom and software developer section of s7 edge to find floyd v4. Its a s9 android 10 one ui 2 port...
Personally, I'm using latest alexndr's devbase rom. Because I'm still paranoid about fully custom or ported roms
Alexndr's devbase is a full stock oreo - debloated rom. Which has option to root during flashing in twrp too. Its perfect for my needs.
But maybe soon, I will change to Floyd v4 to experience the future.. who knows
Sent from my Legendary Hero2LTE using Tapatalk
shah22 said:
I don't recommend any rom except a stock rooted debloated one.. (like Alexndr's devbase)
Reason : because full custom roms have a high chance to mess up your phone's efs and permanent soft brick issues.
But, I'm in love with infinity wallpapers, dark mode and android 10 in general like all others these days.. so if you really want samsung android 10 for S7 edge, then Floyd V4 is your best bet.. see on rom and software developer section of s7 edge to find floyd v4. Its a s9 android 10 one ui 2 port...
Personally, I'm using latest alexndr's devbase rom. Because I'm still paranoid about fully custom or ported roms
Alexndr's devbase is a full stock oreo - debloated rom. Which has option to root during flashing in twrp too. Its perfect for my needs.
But maybe soon, I will change to Floyd v4 to experience the future.. who knows
Shah,
Many thanks for the recommendation of the FloydQ rom.
I installed it yesterday after making all backups inc. Smartswitch.
Very easy to install both from flashing and Aroma installation viewpoints. Ran 1st time without a glitch and phone now thinks its an S9+ running Android 10 a la Samsung. I even managed to transfer my Smartswitch backup to my wife's old S7 Edge and then used Smartswitch to transfer from that phone to the 'S9+'.
Only glitch was logging into my Samsung account but sorted that as well so all in all very happy so far.:good:
Click to expand...
Click to collapse
I wanted to upload a new rom to my phone (pine, 16GB), but it will never boot. Always after rebooting, TWRP will be loaded again. I'm tried multiple ROMs (LineageOS, DotOS, MokeeOS ), but the problem occurs for all rom. TWRP says, flash succed for every one system, but not booting after reboot.
I'm used twrp-3.5.0_9-20210101-pine-arm64 version. Only I can do flash a stock rom using MiFlash, but no custom rom via TWRP.
Mi device is correctly unlocked via Official Unlock Tool app.
Can you tell me why?
Thanks
Maybe try another twrp version or another completely like OrangeFox can't really tell you why i don't have as much knowledge in why or how it works but i have tried a lot on mine so this should be ur first troubleshooting step from my point of view also have you flashed the ROMs with their instructions some say the sequence you should format or wipe ur data etc...
Working for now,
The problem was that I didn't choose to Format data