Database Users

[Q] Restore IMEI on N910F

I bought the N910F a few weeks ago. I'm traveling so I had it unlocked in Bangkok to use other Sim cards. That's when my problems began.
They rooted the phone and changed my IMEI number. The result is: Knox flag tripped, fingerprint sensor not working anymore (error), losing WiFi passwords (had to do ro.securestorage.support=false to fix it) and worst of all lag and bad battery life. I can't even watch a HD movie without lag. AnTuTu score 36000.
The efs folder is empty (not mounted). I have no backup of the folder. The phone functionality works fine. I got no problems with any Sim card. I have a valid imei, just the wrong one. I tried firmware installation and initialization with Kies, but it didn't change anything.
I'm traveling through Asia for many months so I can not get a replacement or send it in for repair at home in Europe.
Do you have an idea how I could get my original imei back? or how to mitigate the issues?

I had a very similar problem, I thought I was sunk. But then I found THIS post, I used the Edit 2 method and it worked a treat, hope you have similar luck. If you don't have TWRP, then I'd recommend you install it, can be a real lifesaver.

thanks for the link. it worked partially. I managed to mount the efs folder. the partition for n910f is mmcblk0p13! I used the terminal emulator on my rooted phone with busybox. no need to use recovery.
the bad thing thing is, I still don't have my original imei. the good thing is, my fingerprint sensor works again, I don't need the Wi-Fi fix with ro.securestorage. support=false and the phone feels much faster, less laggy now.
kinda happy with that. If I had the efs backup now....
would a initialization with Kies restore my original imei?

Sorry, I really can't say, I've never used Kies. Glad it seems to be running better now.
Should have mentioned the partition on a N910 is /dev/block/mmcblk0p13, getting old and forgetful, LOL.

That's a bummer OP - a non-factory unlock on newer Samsung phones involves writing another phone's hacked EFS data.
If the store didn't do a backup of your old modem data, your original IMEI is gone.
DO NOT attempt to use Qualcomm NV Tools to change your IMEI back to stock. (Guess how I wrecked my Note 3 the first time around!) - you need a valid IMEI Certificate to access 3G/LTE networks so you'll be stuck in 2G mode.
Samsung service centers have the tools to write any IMEI they want and generate the valid certificate, though it'll be expensive. I'd just advise OP to Odin to stock and wipe data, then root and disable ro.securestorage.support.
Having a wrong IMEI's not too bad, although a big no-no in terms of the GSM standard.

1) I think I have a valid certificate for my 'new' imei. Mobile data connections work fine and fast (H+). I prefer my original imei though.
2)why should I disable securestorage.support? It works fine enabled.

gattacus said:
1) I think I have a valid certificate for my 'new' imei. Mobile data connections work fine and fast (H+). I prefer my original imei though.
2)why should I disable securestorage.support? It works fine enabled.
Click to expand...
Click to collapse
As part of the unlocking process, they wrote a new (rather, copied from another phone) IMEI to your Note 4. It'll work just fine. However, the IMEI may be shared with other phones, and may one day be blacklisted. When/If that happens, you'll need to write a new IMEI again.
I think I didn't come across right the last time - don't try to change your IMEI to your original one with Qualcomm NV Tools without a matching, proper certificate for it. It's a world of hurt.
As for ro.securestorage.support, it _might_ be needed for keeping WiFi passwords saved on reboot. Or not. IIRC, my rooted Note 3 needed it set for WiFi and S-Health to work right. I'm staying unrooted on my Note 4, so I don't know if you'll still have to do that.

I will go to a service center and ask if they can restore my imei but it doesn't seem to be urgent now. I just hope that a kies install of lollipop doesn't bring back the problems (unmounted efs).
WiFi passwords survive a reboot without the fix. So far so good.
Thanks for your help.

rastus.rob said:
I had a very similar problem, I thought I was sunk. But then I found THIS post, I used the Edit 2 method and it worked a treat, hope you have similar luck. If you don't have TWRP, then I'd recommend you install it, can be a real lifesaver.
Click to expand...
Click to collapse
Your post helped me a lot. I just wanted to say that you made my day. THANK YOU!!!!!

you can use darkmed repair tools
gattacus said:
I bought the N910F a few weeks ago. I'm traveling so I had it unlocked in Bangkok to use other Sim cards. That's when my problems began.
They rooted the phone and changed my IMEI number. The result is: Knox flag tripped, fingerprint sensor not working anymore (error), losing WiFi passwords (had to do ro.securestorage.support=false to fix it) and worst of all lag and bad battery life. I can't even watch a HD movie without lag. AnTuTu score 36000.
The efs folder is empty (not mounted). I have no backup of the folder. The phone functionality works fine. I got no problems with any Sim card. I have a valid imei, just the wrong one. I tried firmware installation and initialization with Kies, but it didn't change anything.
I'm traveling through Asia for many months so I can not get a replacement or send it in for repair at home in Europe.
Do you have an idea how I could get my original imei back? or how to mitigate the issues?
Click to expand...
Click to collapse
you can use Darkmed S7 S7 Edge Imei Cert Repair Tool v.1.1.7 and I am sure, they will solve your problem.

allan maanson said:
you can use Darkmed S7 S7 Edge Imei Cert Repair Tool v.1.1.7 and I am sure, they will solve your problem.
Click to expand...
Click to collapse
This post is really old bruh ?
Sent from my SM-N910G using Tapatalk

No network access (Moto G5 Plus)

Hi everyone,
I've been having a problem since yesterday morning. Everything seemed to be fine with my phone before I flashed a custom rom. I was using at the moment MSM Xtended and I flashed the latest version of CrDroid. After flashing that other custom rom and booting, my phone had no network signal. All it reads on the status bar after that is just "No service". Of course, I removed the SIM card and reinserted it many times but that did nothing.
I've already tried flashing another rom (the latest AICP rom) and even going back to the one I was using at the beginning, but still nothing. I even tried reflashing the NON-HLOS.bin file and erasing modemst1 and modemst2, but it didn't do anything either. I also tried flashing this deodexed stock rom and booting. Interestingly, that kind of fixed the problem, since it recovered its network functionality. However, after reflashing an Oreo custom rom, it loses it again (actually, I've done that a few times today, but the last time I tried flashing the stock rom, for some reason it didn't fix it anymore). I don't know if in this case it's worth mentioning it, but I've tried checking my IMEI on both, custom roms and stock rom, and it's never been 0 at any moment.
TL;DR: My phone lost its network signal after flashing a new custom rom and I have no idea why. If anyone could somehow help me, I'd be really, really grateful.

I have had this happen so many times it is not crazy LOL. The best you can do is find a rom that it happens the least. For me it has been AOSP extended. Signal has been great. It is a bug that I dont think the devs even thought would happen with 8.1 roms. It will happen to everyone at some point if we stay on these 8.1 roms i guess until we get a workable 8.1 stock rom. There will be those who chime in saying it nevver happen to them but it will eventually.

Well, it's nice to know I'm not actually the only one then, I guess. But is there nothing I can do? Since I can't seem to get it fixed even by flashing the stock ROM anymore and flashing AOSP extended didn't seem to help at all either

I know brother there is no rhyme or reason it just happens. I am hoping when 8.1 stock comes out for us there will be a new batch of 8.1 custom roms without this problem. Right now i am on extended and havent had any signal problems for a few weeks so who knows.
Maximo22 said:
Well, it's nice to know I'm not actually the only one then, I guess. But is there nothing I can do? Since I can't seem to get it fixed even by flashing the stock ROM anymore and flashing AOSP extended didn't seem to help at all either
Click to expand...
Click to collapse

Okay. Luckily enough, Oreo stock ROM doesn't look like it's gonna take too much more to arrive... Or so I hope, at least. Thanks

I was using LinageOs and it was working great. Then I decided to install DolbyAtmos and for that I flashed Magisk . Suddenly i had no network but my sim cards were detected , IMEI was there but no network on either sim whatsoever. I tried reflashing the LinageOs and PixelExperience ROM but none worked. So I tried flashing(ADB) the stock firmware only to lose my IMEI . After reading this post I tried Debloated ROM and my network was back. I should have stopped at that point but I tried to return back to stock again and lost IMEI again and now I have tried Dbloated,LineageOs , PixelExperience , AOSP Extended , but none helped me getting back network . Now I am stuck with this phone with no network , I had a backupp of my system before I flashed Oreo ROMs (with EFS) so I can get IMEI back but no network. This phone was my daily driver and now I have no idea what to do.

svapre said:
I was using LinageOs and it was working great. Then I decided to install DolbyAtmos and for that I flashed Magisk . Suddenly i had no network but my sim cards were detected , IMEI was there but no network on either sim whatsoever. I tried reflashing the LinageOs and PixelExperience ROM but none worked. So I tried flashing(ADB) the stock firmware only to lose my IMEI . After reading this post I tried Debloated ROM and my network was back. I should have stopped at that point but I tried to return back to stock again and lost IMEI again and now I have tried Dbloated,LineageOs , PixelExperience , AOSP Extended , but none helped me getting back network . Now I am stuck with this phone with no network , I had a backupp of my system before I flashed Oreo ROMs (with EFS) so I can get IMEI back but no network. This phone was my daily driver and now I have no idea what to do.
Click to expand...
Click to collapse
Everything you said is exactly as if I had written it. I did all of that and now I'm exactly in the same position. No idea how to fix it yet. Still, if you managed to find a solution somehow, please write a reply on this thread again

Maximo22 said:
Everything you said is exactly as if I had written it. I did all of that and now I'm exactly in the same position. No idea how to fix it yet. Still, if you managed to find a solution somehow, please write a reply on this thread again
Click to expand...
Click to collapse
No success yet , but read on some posts that different baseband could be an issue.

Solution I've tried and worked 100 %
Hi bodies,
You can turn off your phone,
Go to fastboot menu by pressing and holding power button and volume down button in the same time.
Roll to "Restart Bootloader" with volume up/down and validate with power button.
Now select start and the network is back.
see you !:fingers-crossed:

Hello everyone I am facing signal problem with my moto5G plus device .it detect sim card but not getting signal . While searching manually it's say's error while searching network. When i checked in QCQM app for sim card test it's shows " PHONE ICCID Compare with SIM ICCID: ERR". Can anyone give me the solution .. I have tried to boot device in bp tools mode it worked for me only ones until next reboot after that nothing is happening even bp tools mode also ... Had done restore factory many times but same result with no signal

Hi, i did a clean flash and installed android 11 from android 8.1 on my Moto g5 plus(XT1686), after flashing rom with android 11 i am not getting and network coverage, it detect the sim card but no network, cant even search network manually shows as Not available. But after i recover and come back to 8.1 network works fine. Only after updating to any android 11 it dont work. I tried network reset and even Bootloader but nothing seems to work.
Does any1 knows any fix for this?
Does gapps can effect the Network?

Oneplus 5 Wi-Fi problem

Hello, i need some help...
I've already searched and tried a lot of ways to fix my problem but nothing worked.
Suddenly the Wi-Fi of my Op5 stopped working, i cant even turn on... And also the phone doesn't recognize sim cards. The phone isn't rooted.
I've already made factory reset, flashed another rom, cleared cache, etc...
Thanks in advance.

Check if Your both sim's IMEI and WLAN MAC address are displayed correctly.
Sounds like corrupted EFS partition to me. Try to restore backup (if You have one). I think You can't fix this issue without a backup. So only way is to send it to OP for repair (i guess on warranty it should be free).

a2017u b20 firmare on a2017g modem problem

Hello
Could someone help me?
a2017u b20 stock. Flashed via EDL
I have a2017g version. but i need wifi calling working(and it works perfect on b20).
But i have some strange issues with modems.
I tried a lot.
ZTE_A2017X_Oreo_V2.10B12_Gmodem
ZTE_A2017X_Oreo Gmodem for 02 version
ZTE_A2017X_Oreo Gmodem for 03 version
They worked, and wifi callong was working too, but - funny bug - when someone calls me from iphone X(exect iphone X) then i cant hear him. and after i call back all is normal. But cant receive calls from them.
The only modem, on which there is no this bug is ZTE_A2017G_MODDED_MODEM_FOR_OREO_A2017V3.0.0B01-2_TURKDEVS
from this thread:
"https://forum.xda-developers.com/axon-7/development/anroid-8-official-mifavaor-ui-5-2-beta-t3707605"
But with this modem i have only 000000 instead of both IMEI, and after 1-2 there becomes no service on the sim 1(sim2 works but wifi calling works only on sim1) and after reflashing this modem it is good for 1-2 days.
I almost want to brake this phone because of such stupid bug.
Anyone use a2017u b20 firmware on a2017g? which modem do you use and do you have such problem.
Firs

replace the modem in the EDL package,with the G b03/b02 oreo modem.Then flash again the edl.Or flash the modem in twrp

Predatorhaze said:
replace the modem in the EDL package,with the G b03/b02 oreo modem.Then flash again the edl.Or flash the modem in twrp
Click to expand...
Click to collapse
hello, as i wrote before i tested b03 and b02 modems, flashed in twrp. On both there is a roblem with incoming calls from Iphone X.

Hello everyone.
Also tested on b12 by nfound. The same issue there on b12 g modem. I cant hear iphone X owners when receive calls from them. Hear them well when call them back. On Turkdevs modem incoming calls are ok, but no imei and "no service" after 1-2 days. I think i already tested all current roms. Maybe someone could mod b03 modem as turkdevs b01-02 from 1st post?

I got the same problem since yesterday. My device was away for a battery replacement some days ago. After I get it back everything was fine. Yesterday the modem stopped working. In my option I changed nothing. I just get no signal anymore. I'm still on 14.1 Nougat. I have tryed to flash the modem again, made a system, EFS, bootloader and twrp recovery but nothing worked so far. I also tryped to reset network settings and tryed another sim card..

dbekan%5 said:
I got the same problem since yesterday. My device was away for a battery replacement some days ago. After I get it back everything was fine. Yesterday the modem stopped working. In my option I changed nothing. I just get no signal anymore. I'm still on 14.1 Nougat. I have tryed to flash the modem again, made a system, EFS, bootloader and twrp recovery but nothing worked so far. I also tryped to reset network settings and tryed another sim card..
Click to expand...
Click to collapse
Have you tried to reset to stock via EDL?

runninghamster said:
Have you tried to reset to stock via EDL?
Click to expand...
Click to collapse
Not yet. I was hoping that there is a solution with less effort. Is this the only know solution?

dbekan%5 said:
Not yet. I was hoping that there is a solution with less effort. Is this the only know solution?
Click to expand...
Click to collapse
I've actually never heard of this problem, so I'm not sure what the proper solution is. Going to stock via EDL has always fixed my problems in the past, so that's why I recommended it. You can give it a shot, it's not like your phone is very useful in it's current state as a "phone to call people with".

runninghamster said:
I've actually never heard of this problem, so I'm not sure what the proper solution is. Going to stock via EDL has always fixed my problems in the past, so that's why I recommended it. You can give it a shot, it's not like your phone is very useful in it's current state as a "phone to call people with".
Click to expand...
Click to collapse
I already read something about it. Thanks for that advice again. It's the absolute wrong time for a error like this. I have absolute no time/no head for this.

My problem is totaly different.
Modem works. G modem (b12,b03,b02) works, but only one problem - incoming(outcoming good) call from iphone x is without sound - i cant hear them. But on one modem - b01-02 from turkdevs i can hear them, but there is no imei - 0000 instead of imei and after 1-2 days "no service"
I started this thread because i think that here could be a man, who could make some magic with b03 modem and make some changes, wich will allow me to hear iphone x users.
Your problem seems like it just wrong modem flashed. maybe some other to try and you will find some which will work.

Is there any user here, who could edit modem?

samsung G935F screen lock issue

hello, i flashed the lightrom in twrp today and started having some issues, when setting up the phone i can no longer setup my fingerprint scanner also when setting up a pin it will accept it then keeps saying try again when entering the pin. i've had a good look online as to see what the problem is but cannot find anything about the problem i am having. would be great if someone can help me out with this problem. thanks

well after a couple of days i have now managed to fix my problem. my /efs must of been corrupted, after looking online i found out no working pin or fingerprint and many other problems can be caused by /efs corruption, also i could ring out but my mobile data was no longer working either. all this because of /efs corrpution. luckly i had my efs backed up. after again installing light rom both my pin and fingerprint and mobile data or now fully working.