Database Users

SM-G900V unknown baseband and restart

Hi,
Phone restarts automatically with no imei and unknown baseband, I download stock firmware 4.4.2 and install on it but same situation,
any suggestion or help pls,
thanks
br

Isn't IMEI used for phone identification along with MEID? If thats blank, would it be an issue on Verizons side?

Elite49 said:
Isn't IMEI used for phone identification along with MEID? If thats blank, would it be an issue on Verizons side?
Click to expand...
Click to collapse
imei is unknow

2 Choices
nsnobel2 said:
imei is unknow
Click to expand...
Click to collapse
Hi
I don't know if you've fixed your issue with your g900v or not, but i have the same problem and the same phone and obviously the same symptoms ...
As far as I've tried, nothing worked not ODIN flashing ROMs, or QPST to write IMEI or EFS professtiona ADB .... etc.
What I've come to know is this :
1- keep the phone in a safe place till next months reveal a solution through developers here or elsewhere.
2- Flash the Original Samsung Verizon Rom ( Full Package with efs and bootloader mounts and all partitions " Clean Flash" ) which costs about 100$ .
3- Change the board for a (200$) new one .
So, I would try to pay the 100$ and flash the original ROM, and comeback to tell if it solved the Problem.
I wish if you share any different approach or feedback . I would love to hear it .
Bye

It could possibly be that your EFS folder is damaged. This is where your IMEI and Baseband info is stored. If that's the case for your device, these steps should work. I've done this on two phones (one being an S5) and it fixed this problem.
I'm assuming that you're rooted. If not then you'll need to root your device first. And you need to have debugging enabled. What this does is backups the files from the EFS folder, repairs the partition tables, then restores the files to the repaired folder.
1. Connect the phone to your computer. (Windows)
2. Download this: https://www.dropbox.com/s/v2h5dzisjd0rgj5/EFS_Professional_2.1.73_Release.zip?dl=0
3. Extract and run the program
4. Click EFS Professional... It will open a window showing that it found your phone
5. Click on the Backup Tab and make sure all of the partitions are checked, and your Device Filter is recognized
6. Hit the Backup button to backup the EFS folder
7. After that's done, click the Restore button and it will restore your files to the EFS folder.
I hope this helps you.

There used to be a tool for the Note 2 I believe, maybe S4, that would let you re-write your EFS if it accidentally got erased. Not a backup/restore deal, but a tool to key in your IMEI and it would write it to the phone. Maybe research that tool for a fix?

joshw0000 said:
There used to be a tool for the Note 2 I believe, maybe S4, that would let you re-write your EFS if it accidentally got erased. Not a backup/restore deal, but a tool to key in your IMEI and it would write it to the phone. Maybe research that tool for a fix?
Click to expand...
Click to collapse
Was it a tool specifically for the Note 2, or multiple Samsung devices, or maybe a universal program like CDMA Workshop? I love that program. It's what I use when it comes to actually entirely rewriting files like this. Most of the time a full rewrite isn't needed though if the EFS folder has just been damaged. Which "damaged" is totally the wrong word here, but that's what it's called for some reason. I really don't even know how it happens, but I do know when it does, it usually just jumbles and/or fragments the info in the folder and needs to be put back in it's correct order. Kind of like defragging in Windows. Just a tool like you're talking about would definitely be cool for me to have though. I shall start my quest to find it. Lol

Please some help
Any luck yet ???
Got the same issue here, and none of the threads here worked .

Same problem
Hello,
I have the exact same problem. I bought the phone here in Mexico, and the phone came with erased EFS folder. Phone restarts automatically when screen turns off. When I'm using the phone, it works just fine, but some seconds after screen goes off, phone restarts automatically. EFS folder is messed up, I've tried out a lot EFS restoring tools with no luck.
I tried QPST but it does not detect the phone, only appears "?" and "No phone" blinking. The same happens with DFS Tool.
I will try to look for that tool joshw0000 talks about.
I hope we can find out a solution for this excellent phone.
Bye.

Hey ...
I did a factory reset and cache wipe, and now the phone stopped restarting when the screen goes off, but still got the "Unknown" issues.
But at least I got rid of the annoying restarts.
570 ppl read this and still no answer, I got to admit ... it's tough.
Sent from my SM-G900V using XDA Free mobile app

Need EFS Backup of WORKING Nexus 6P

Google will not admit this but there were major security flaws in factory images before jan,2017.
Read for yourself below article.
Link: https://www.google.com/amp/www.tech...d-nexus-6-patch-fixes-modem-vulnerability.htm
They patched it in Jan. But effected users like us(who got effected on 2016) got proper fu***.
The result : NO SERVICE but detects sim card.
Kindly.....Plz....plz...plz....make a copy of your efs and provide it in this thread. Please also mention what factory image/build number u are using.

No one will give you his EFS backup because its unique for each phone..so you cant use someone else EFS on your phone...

scrin378 said:
No one will give you his EFS backup because its unique for each phone..so you cant use someone else EFS on your phone...
Click to expand...
Click to collapse
Hey,
Yes, you can use it... The.problem is: are you ok to give it to someone you don't know?
Cheers...

5.1 said:
Hey,
Yes, you can use it... The.problem is: are you ok to give it to someone you don't know?
Cheers...
Click to expand...
Click to collapse
Really?? Thats a big news for me its no problem do i know him or not.. How can you use someone else EFS/IMEI.. it would be 2 phones with same IMEI number..maybe it will work, but its like you use someone else ID card and present it like its yours..

scrin378 said:
Really?? Thats a big news for me its no problem do i know him or not.. How can you use someone else EFS/IMEI.. it would be 2 phones with same IMEI number..maybe it will work, but its like you use someone else ID card and present it like its yours..
Click to expand...
Click to collapse
Hey,
When the IMEI is corrupted on the software side, it still shows up using:
fastboot getvar all
So the IMEI is somehow corrupted on the EFS partition. How, I don't know. Seems like the EFS acts like a bridge between hardware/software. Of course, I could be wrong...
Some have tried but didn't succeed. Now, it's not the first time I see someone using another EFS backup and getting his IMEI back. I don't know why it would get "their"" original IMEI instead of the one included in the EFS backup either. But i guess they must all lie saying it fixed their device.
Cheers...

I have restored EFS using a backup from someone else's device EFS. It did not change my original imei.

parvezrobi said:
Google will not admit this but there were major security flaws in factory images before jan,2017.
Read for yourself below article.
Link: https://www.google.com/amp/www.tech...d-nexus-6-patch-fixes-modem-vulnerability.htm
They patched it in Jan. But effected users like us(who got effected on 2016) got proper fu***.
The result : NO SERVICE but detects sim card.
Kindly.....Plz....plz...plz....make a copy of your efs and provide it in this thread. Please also mention what factory image/build number u are using.
Click to expand...
Click to collapse
Still need an efs?

DEVILOPS 007 said:
Still need an efs?
Click to expand...
Click to collapse
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.

blckhwkone said:
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.
Click to expand...
Click to collapse
I'll share one soon for everyone here. I'm just a bit worried about security though as I don't know what happens and what data is stored in an efs backup.

blckhwkone said:
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.
Click to expand...
Click to collapse
Welcome to The tragic Club of network less Nexus 6P.. You are not alone here.

DEVILOPS 007 said:
I'll share one soon for everyone here. I'm just a bit worried about security though as I don't know what happens and what data is stored in an efs backup.
Click to expand...
Click to collapse
Down do it. The efs is device dependent. It will contain things like your imei. So even if restored on another device it will end up causing issues due to the same imei on different devices. It can also make it so things like WiFi don't work

zelendel said:
Down do it. The efs is device dependent. It will contain things like your imei. So even if restored on another device it will end up causing issues due to the same imei on different devices. It can also make it so things like WiFi don't work
Click to expand...
Click to collapse
Okay thank you, I had no clue about efs so I'll take your word on it.

Guys can anyone share efs so that I can restore and save my phone..I Have no signal ispitevof detection sim card...it shows no service.. But when I use jio it shows full signal..kindly help..

I had similar problem with my OnePlus X. Apparently I was saving and restoring my efs partion with every twrp backup which eventually caused it to become currupt. Thought my phone was toast until a friend on telegram suggested deleting modem1 and modem2 files with adb commands. Sounded more destructive then good but it actually worked sim was reading again and got full use of my phone. It's good to make backup of efs but only once. Not sure if this is the fix for every phone but works with OnePlus and Xiaomi.
How to Fix EFS from Bootloader Mode using Fastboot commands
Setup ADB and Fastboot on your PC.
Enable Developer options & USB debugging on your Android device.
Connect your device to the PC and open a command window on the PC.
Issue the following commands one by one:
adb reboot bootloader
fastboot erase modemst1
fastboot erase modemst2
fastboot reboot
Got my information from here

kach22 said:
I have restored EFS using a backup from someone else's device EFS. It did not change my original imei.
Click to expand...
Click to collapse
can send me plz your bakcup i need

MI A1 without IMEI, HELP please.

After the error in persist partition, my smartphone is now without IMEI, I've tried everything, but I can not fix. Helpe-me. :crying:
SOLVED

What did you try, there are several threads about it.
You should keep an efs partition backup from twrp in the future.

coremania said:
What did you try, there are several threads about it.
You should keep an efs partition backup from twrp in the future.
Click to expand...
Click to collapse
I tried QPST and WriteDualIMEI, but it did not work, can you help me?

Someone was lucky by flashing the nougat image .18, I never killed my mi a1 iMEI, but I always have a efs backup.
---------- Post added at 19:24 ---------- Previous post was at 19:19 ----------
https://androidfilehost.com/?fid=745849072291691346

coremania said:
Someone was lucky by flashing the nougat image .18, I never killed my mi a1 iMEI, but I always have a efs backup.
---------- Post added at 19:24 ---------- Previous post was at 19:19 ----------
https://androidfilehost.com/?fid=745849072291691346
Click to expand...
Click to collapse
Thank you very much, my friend, I will try here.

Help :/

Look at following thread. https://forum.xda-developers.com/mi-a1/help/mi-a1-imei-lost-phone-restart-t3735440
I could repair it once. Right now I need to repair it again. Don't know how I broke it this time. Will put a step-by-step guide if I can repair it again.

ElKidd said:
Look at following thread. https://forum.xda-developers.com/mi-a1/help/mi-a1-imei-lost-phone-restart-t3735440
I could repair it once. Right now I need to repair it again. Don't know how I broke it this time. Will put a step-by-step guide if I can repair it again.
Click to expand...
Click to collapse
Tried the same. I was able to recover IMEI, but after a few hours, my phone rebooted itself and boila.. Lost IMEI again, since then, QPST won't work, so right now i'm only with WiFi.
I think that trying to recover an EFS backup and after that, make an IMEI change with QPST to recover your IMEI instead of the IMEI from the backup EFS should do the work, but i'm not able to find any EFS backup for the Mi A1.

How can someone lose their device's IMEI?

In my case a fastboot image did that. I have the same problem that QPST doesn't work anymore. That makes me crazy. Phone just seems to work fine with Oreo, but can't install the QCN file right now.

Hey friend, can you give me your Facebook or WhatsApp so I can get some doubts? This problem in the cell phone is horrible.

I couldn't fix my phone. I have now ordered a new Mi A1 and hope to fix the broken one with some export of the new one.

Devices status

Byramklc said:
Devices status
Click to expand...
Click to collapse
Could it be that with the backup of another mi a1 we were able to fix?

ElKidd said:
I couldn't fix my phone. I have now ordered a new Mi A1 and hope to fix the broken one with some export of the new one.
Click to expand...
Click to collapse
Could it be that with the backup of another mi a1 we were able to fix?

I hope that.

Bro first flash 7.8.23 rom flash
Phone starting and phone open *#*#717717#*#* input and PC opening USB diag mode open USB driver installing and writedualimei app download and Admin opening program and write IMEI success and phone restart devices is back 8.1.10 rom flash

Byramklc said:
Bro first flash 7.8.23 rom flash
Phone starting and phone open *#*#717717#*#* input and PC opening USB diag mode open USB driver installing and writedualimei app download and Admin opening program and write IMEI success and phone restart devices is back 8.1.10 rom flash
Click to expand...
Click to collapse
I've already done this and it does not work, I'll do it again and install a ROM 8.1.10

@Byramklc
1) ROM version 7.8.23 doesn't work in my case anymore. Don't know if it has something to do that I updated to Oreo.
2) With the tool writedualimei the IMEI didn't change. Maybe it worked for you, but not for me. QPST did work, but only once.

ElKidd said:
@Byramklc
1) ROM version 7.8.23 doesn't work in my case anymore. Don't know if it has something to do that I updated to Oreo.
2) With the tool writedualimei the IMEI didn't change. Maybe it worked for you, but not for me. QPST did work, but only once.
Click to expand...
Click to collapse
Here the QPST does not recognize my cell phone.
I already installed the drivers and did everything, but not work

[Help plz] Mobile radio / WIFI / diag mode broken after modifying NV Item QPST/QXDM

Hey guys,
Here is a story of stupid myself and now i need help with my phone Please enjoy and help if you can. Thanks.
I was trying to unlock LTE bands on EEA mi 9t (BAD DECISION, DON'T DO IT!) following any of those tutorials online, and i broke:
1, mobile network
2, wifi
3, diag mode/port
What i did:
- I have root with Magisk, used "adb shell / su / setprop sys.usb.config diag,adb" to enable diag port.
- Connected QPST and QXDM
- In QXDM's NV browers, i put "17592185995263" in both lines in NV item 06828 LTE_BC_CONFIG without backing up the original value (BAD DECISION, DON'T DO IT!)
- Rebooted the phone, and now mobile network and wifi disconnectes every 5 seconds.
What i have tried to fix this:
1, Reconnect QPST and QXDM, now QPST doesn't read phone's ESN number, and QXDM is saying that i can read/write to any NV items. Basically the diag mode is not communicating correctly anymore.
2, factory reset, no good.
3, recovery flashing, no good
4, fastboot flashing, no good
5, EDL/MiFlash tool flashing, (YES, with an authorized account), including persist partition (modified crclist.txt and etc), NO GOOD
I am here right now. I have done so much research on this topic and nobody has seem to run into this.
I am an embedded engineer and have a little bit android dev experience, and here is what i think based on what i have done and what i have read:
1, the NV items are stored in some location in flash memory, and they are loaded in the boot sequence when the phone boots up. But these NV items are not in persist, modem1 nor modem2 partitions as i have tried. And this block is not flashed by any flashing method, even EDL mode.
2, once the modified NV item (LTE_BC_CONFIG) has been loaded, it cause the firmware/hardware of qualcomm to not function correctly, thus the diag mode/port is not communicating properly to QPST/QXDM.
So I am (still) looking to fix this problem in 2 ways according to my theory above:
1, find the location that stores the NV items and try to revert the LTE_BC_CONFIG part back (but i don't know the original, yet possible to calculate it based on phones spec sheet).
2, find a way to reset the diag mode/port so that it talks to QPST/QXDM again.
Please help if you know anything about this.
Otherwise my phone is just a tablet that does not have internet lol
Thank you in advance!
tag: redmi k20 pro mi 9t global eea lte band unlock

Does a full reflash not fix it? You probably tried already.

SnowFuhrer said:
Does a full reflash not fix it? You probably tried already.
Click to expand...
Click to collapse
yea lol Qualcomm's EDL mode flash has no effect

Take it to service center after installing miui .
State that network is fluctuating by itself. I have done something similar on other device without taking backup . Only way is to change the whole motherboard .

Gaurav0007 said:
Take it to service center after installing miui .
State that network is fluctuating by itself. I have done something similar on other device without taking backup . Only way is to change the whole motherboard .
Click to expand...
Click to collapse
That method totally makes sense...expect that xiaomi has no service center in Canada and i bought this potentially European version phone ftom Gearbest (which ships from China) lol its a whole lot of locations that dont match up lol..

anyone?
worst case, i may need to sell the phone as a internet-less digital famera for scrap money lol

Tmobile brand 12
Is there a way to enable all the tmobile bands?

russellglen72 said:
Is there a way to enable all the tmobile bands?
Click to expand...
Click to collapse
if i can fix my phone i'd volunteer to try lol

If you need QCN backup for 9T, I got one working. This might restore your original settings after you wipe modemst1&2 and fsg.

SEXCAVATOR said:
If you need QCN backup for 9T, I got one working. This might restore your original settings after you wipe modemst1&2 and fsg.
Click to expand...
Click to collapse
Thanks! I could give it a try, as the problem is mainly that the phone does not talk to any of these tools any more.
Let me know where i can get it plz.
And what tool did uou create the backup with?

kezzuki said:
Thanks! I could give it a try, as the problem is mainly that the phone does not talk to any of these tools any more.
Let me know where i can get it plz.
And what tool did uou create the backup with?
Click to expand...
Click to collapse
This backup I found from a local forum is taken using QPST tool (2.7.477 I remember). It belongs to Xiaomi Mi 9T device. Only one IMEI is working though (the other one is nulled). Why your phone doesn't talk to tools anymore, can't get DIAG mode on?
https://gofile.io/?c=gxTHSm (IMEI of the backup is written in the name. You can search and change using HEX edit method).

SEXCAVATOR said:
This backup I found from a local forum is taken using QPST tool (2.7.477 I remember). It belongs to Xiaomi Mi 9T device. Only one IMEI is working though (the other one is nulled). Why your phone doesn't talk to tools anymore, can't get DIAG mode on?
https://gofile.io/?c=gxTHSm (IMEI of the backup is written in the name. You can search and change using HEX edit method).
Click to expand...
Click to collapse
Diag mode can be enabled, but qpst says says its in a wrong state and cannot read or write NV items lol

kezzuki said:
Diag mode can be enabled, but qpst says says its in a wrong state and cannot read or write NV items lol
Click to expand...
Click to collapse
I would have backup modemst1&2 and fsg then wipe those partitions. That might jump start.

SEXCAVATOR said:
I would have backup modemst1&2 and fsg then wipe those partitions. That might jump start.
Click to expand...
Click to collapse
May I ask what those partitions do?

kezzuki said:
May I ask what those partitions do?
Click to expand...
Click to collapse
They are where the NV items and modem config are located and their backup. Once you purge those partitions, android system will renew it from an inner source. If anything goes wrong, you can always restore those partitions from an image you took previously. I did it numerous times. My bootloader was unlocked and I had TWRP. Those are necessary.

SEXCAVATOR said:
They are where the NV items and modem config are located and their backup. Once you purge those partitions, android system will renew it from an inner source. If anything goes wrong, you can always restore those partitions from an image you took previously. I did it numerous times. My bootloader was unlocked and I had TWRP. Those are necessary.
Click to expand...
Click to collapse
Wow, that seems like it will work. I will try it when i get a chance.
Where did you find this information?...i tried searching the entire internet but didn't see anything like that...
Thanks!

kezzuki said:
Thanks! I could give it a try, as the problem is mainly that the phone does not talk to any of these tools any more.
Let me know where i can get it plz.
And what tool did uou create the backup with?
Click to expand...
Click to collapse
I learned in a hard way. Bricked my device while playing with the bands, lost my IMEI...
This info I gave you is served in XDA forums under different topics. If you gonna give it a try, I can give you exact steps.

SEXCAVATOR said:
I learned in a hard way. Bricked my device while playing with the bands, lost my IMEI...
This info I gave you is served in XDA forums under different topics. If you gonna give it a try, I can give you exact steps.
Click to expand...
Click to collapse
wow guess you saved your phone lol
I can wipe blocks and will try that method later. Thanks!

kezzuki said:
wow guess you saved your phone lol
I can wipe blocks and will try that method later. Thanks!
Click to expand...
Click to collapse
I know its an old thread, but did you manage to solve that problem? I got a phone here with exactly the same issue

NV Backup Warning : Invalid VIP NVs

Getting error and no imei and no network on one plus 6t...after using msm tool in smt mode please some one help me looks like nvram partition / efs / persist or some critical partition was corrupted or missing please help me i dont wanna to loose this phone please help me i swear i wont messing again ...please help me XDA

newborn0089 said:
Getting error and no imei and no network on one plus 6t...after using msm tool in smt mode please some one help me looks like nvram partition / efs / persist or some critical partition was corrupted or missing please help me i dont wanna to loose this phone please help me i swear i wont messing again ...please help me XDA
Click to expand...
Click to collapse
Unless you have a Backup of your Modemst1 & Modemst2 somewhere there is nothing that you can do. Other than sending the phone to OnePlus for repair. That's the only way I'm afraid.

DarthVader said:
Unless you have a Backup of your Modemst1 & Modemst2 somewhere there is nothing that you can do. Other than sending the phone to OnePlus for repair. That's the only way I'm afraid.
Click to expand...
Click to collapse
its out of warranty and they saying to change motherboard :crying:
another op6t backup will work??

newborn0089 said:
its out of warranty and they saying to change motherboard :crying:
another op6t backup will work??
Click to expand...
Click to collapse
No. The IMEI is unique for every device. So the backup of another 6T won't work. I'm afraid you'll have to get the motherboard replaced.

DarthVader said:
No. The IMEI is unique for every device. So the backup of another 6T won't work. I'm afraid you'll have to get the motherboard replaced.
Click to expand...
Click to collapse
i know imei are different for different devices but i can write mine real imei after flashing backup of another device i already did it in one plus 5 in mines friend ....only need working backup and i guess i can manage to run my phone again with my real id

newborn0089 said:
i know imei are different for different devices but i can write mine real imei after flashing backup of another device i already did it in one plus 5 in mines friend ....only need working backup and i guess i can manage to run my phone again with my real id
Click to expand...
Click to collapse
I have a regular 6T. It won't work.

DarthVader said:
I have a regular 6T. It won't work.
Click to expand...
Click to collapse
i readed many times on xda that one plus 6t and mclaren rom are sames only important changes in kernel for pickup warp charging ...hope i am not wrong !!

NV backup invalid
Dude my phone was in warrenty nd i have some problem like you now what should i do i have OnePlus 7 thus i need to pay mother board charge to center cause it's hardware issue plss help me i m dying :crying::crying::crying::crying