SIM Card not working after Flashing Official Stock ROM(Read below for important note!) - General Questions and Answers

Actually I bricked my device and I was trying to flash the stock ROM again using SP Flash tool. Unfortunately while flashing it shows sec_aut_mismatch ( or something like this) for the file called cust.img in the stock rom and says please disable verified boot. What I did now is "why don't I try letting it go?" I unchecked it. I flashed rom without this file. it got flashed, works fine everything except SIM Cards. The phone detects sim cards but no signal. SIm cards are fine Physically. Do you believe that this not flashing cust.img could be a cause?
MAIN THING: Flashed Stock Rom without CUST.IMG
Secondly I tried to flash the cust.img using fastboot now, but still no luck. I don't know what this file does. PLEASE HELP ME. I AM IN TROUBLE

That's most likely an EFS problem. Do you have some backup?

dedq said:
That's most likely an EFS problem. Do you have some backup?
Click to expand...
Click to collapse
I have a little backup taken through twrp. But it has only some files starting with boot, bootloader and recovery. Total 9 files. Can you explain more about EFS please?

mottaM said:
Actually I bricked my device and I was trying to flash the stock ROM again using SP Flash tool. Unfortunately while flashing it shows sec_aut_mismatch ( or something like this) for the file called cust.img in the stock rom and says please disable verified boot. What I did now is "why don't I try letting it go?" I unchecked it. I flashed rom without this file. it got flashed, works fine everything except SIM Cards. The phone detects sim cards but no signal. SIm cards are fine Physically. Do you believe that this not flashing cust.img could be a cause?
MAIN THING: Flashed Stock Rom without CUST.IMG
Secondly I tried to flash the cust.img using fastboot now, but still no luck. I don't know what this file does. PLEASE HELP ME. I AM IN TROUBLE
Click to expand...
Click to collapse
A thing I forgot is that cust.img flash is successful in fastboot mode

mottaM said:
I have a little backup taken through twrp. But it has only some files starting with boot, bootloader and recovery. Total 9 files. Can you explain more about EFS please?
Click to expand...
Click to collapse
EFS is something responsible for your IMEI which is connected to the signal and SIM.
You cannot have phone signal if you don't have IMEI number which you could have lost. Can you check if you have IMEI? If not, the problem is probably in modem and I would be happy if you had backed that up.

dedq said:
EFS is something responsible for your IMEI which is connected to the signal and SIM.
You cannot have phone signal if you don't have IMEI number which you could have lost. Can you check if you have IMEI? If not, the problem is probably in modem and I would be happy if you had backed that up.
Click to expand...
Click to collapse
I don't see any IMEI numbers. A little research tells me that I must have nvdata.bin and nvram.img in the backup. If this is correct then I don't have such a backup. Is there any way to fix it up without backup?

dedq said:
EFS is something responsible for your IMEI which is connected to the signal and SIM.
You cannot have phone signal if you don't have IMEI number which you could have lost. Can you check if you have IMEI? If not, the problem is probably in modem and I would be happy if you had backed that up.
Click to expand...
Click to collapse
One more thing I notice is that when I enter Recovery mode, It says "nvdata corrupt" in red. More information you may want to know is:
My device is redmi 6a
Wifi works fine
Baseband version present
When I insert sim cards, it detects them(icons get updated on the notification area) it also says getting sim info.
When I enter phone information, it says signal strength in those numbers when sim is inserted
I believe that hardware is fine thus. I really regret my step of trying to change OS. I just want to get sim working somehow

mottaM said:
I don't see any IMEI numbers. A little research tells me that I must have nvdata.bin and nvram.img in the backup. If this is correct then I don't have such a backup. Is there any way to fix it up without backup?
Click to expand...
Click to collapse
I have never had that kind of problem and only had problems with EFS.
I think flashing stock ROM would fix your problem. I don't know what else could be.

mottaM said:
Actually I bricked my device and I was trying to flash the stock ROM again using SP Flash tool. Unfortunately while flashing it shows sec_aut_mismatch ( or something like this) for the file called cust.img in the stock rom and says please disable verified boot. What I did now is "why don't I try letting it go?" I unchecked it. I flashed rom without this file. it got flashed, works fine everything except SIM Cards. The phone detects sim cards but no signal. SIm cards are fine Physically. Do you believe that this not flashing cust.img could be a cause?
MAIN THING: Flashed Stock Rom without CUST.IMG
Secondly I tried to flash the cust.img using fastboot now, but still no luck. I don't know what this file does. PLEASE HELP ME. I AM IN TROUBLE
Click to expand...
Click to collapse
You should know that EFS ( NVRAM ) is a partition on your Android device that stores all the important data associated with your phone. For instance, these data include the IMEI number, Mac address of Wireless devices, important files of internet and product code, etc. Moreover, this data is so important that without this, you would not be able to use your Android phone. And it is very important to keep this partition safe and backed up in case things go south.
My guess is because you were flashing custom ROMs and/or modded apps that you have lost this important EFS ( NVRAM ) partition on the device.

Related

IMEI Messed up, help please!

I was told to post here so:
Hi,
Yesterday I flashed a custom ROM , the rom somehow messed up my IMEI number.
Then i went back to the forum and found out that everyone who flashed the rom got his IMEI messed up and we all got the same IMEI now, i still have calls working but im afraid they will stop working soon, i know what was my original IMEI, can anyone help us please. (Heres the rom i flashed: http://forum.xda-developers.com/showthread.php?t=1034130)
I saw that the devs on samsung captivate managed to restore their imeis, there should be a way to do that to the nexus s.
Same Problem with my phone...
same here
I'm restore my backup .. and nothing change
and imei still changed :S
Same here, i think the phone is as good as network dead.
Hi all, I also was unfortunate to flash this rom resulting in the changed imei issue. My Phone was displaying emergency calls only and i was unable to connect to data services. I used Odin to flash back to stock GRH 78 ticking the phone efs clear box . After rebooting i checked my imei number but it still displays the wrong number. However my phone now connects to the network and i can make and recieve calls and data is enabled. Not a full fix and i am not sure for how long it will work but definately an improvement on the very expensive paperweight i had. Hopefully a full fix will come soon.
Trying that~!
UPDATE :
Nope Odin again didn't help.
Isn't it kinda stupid to discuss this in not only one or two but four threads? I get it, you guys want a fix and I feel with you, but having four threads will only cause confusion.
How about you all agree on one and work together to fix it instead of dividing your efforts?
Sent from my Nexus S using Tapatalk
bloodhawk said:
Trying that~!
UPDATE :
Nope Odin again didn't help.
Click to expand...
Click to collapse
Sorry to hear that worked for me. I'm in UK on vodafone network. Lets hope a solution is found real soon.
james7dean said:
Sorry to hear that worked for me. I'm in UK on vodafone network. Lets hope a solution is found real soon.
Click to expand...
Click to collapse
Can you explain what version of Odin you used - Odin3 v1.8 ??
What rom did you flash stock GRH78 ??
Did you use a .pit file and if yes which one ??
What boxes were ticked and de-ticked in Odin ??
Cheers mate
Hi,
I used odin 3v1.8 and the stock GRH 78 rom. I opened odin and loaded the
bootloader, Pda and scs files and ticked the phone efs clear box ,this was the only box i manually ticked all other boxes were left in their default state. i did not have a pit. file. Previous to using odin I had just unlocked my bootloader as it was locked. Odin won't work with bootloader locked all atempts to access download mode were met with a unlock bootloader screen.
After flashing I checked my emei no. but was disappointed to find no change. I then checked for system updates and clicked on the update which started to download. It then suddenly dawned on me that i had not linked my phone to my router and that data was enabled. I cancelled the Gingerbread update and went into notifications and saw my network instead of the previous Emergency Calls Only. A quick phone call verified that my phone was now connecting to the network. I then connected to wifi and installed the update.
I am still stuck with the wrong emei but can now connect to the network and
have restored my favourite rom from a nandroid. The only issue i now have is the
wrong emei but for now my phone functions perfectly
RisinT96 said:
Yesterday I flashed a custom ROM , the rom somehow messed up my IMEI number.
Click to expand...
Click to collapse
Probably something messed with your /efs partition.
james7dean said:
I used odin 3v1.8 and the stock GRH 78 rom. I opened odin and loaded the bootloader, Pda and scs files and ticked the phone efs clear box ...
Click to expand...
Click to collapse
Why did you have to do that? I don't assume you have a backup of /efs, do you?
james7dean said:
The only issue i now have is the wrong emei but for now my phone functions perfectly
Click to expand...
Click to collapse
I wonder how long it'll work ...
Y'all could try to look in the forums of the various Samsung Galaxy S variants, AFAIK there are ways to restore your IMEI on this kind of Samsung phone, maybe they apply to the Nexus S as well.

[Q] Help!! IMEI NOT WORKING

Hello all,
I have a KArbonn A2 phone with gingerbread.... i tried flashing the ICS firmware of KArbonn A2+ since i knew both phone have exact hardware with no change at all. After flashing ICS it was runing all good and smooth but the only problem is i couldnt get the network on it. It shows the SIM name
but always NO SERVICE .. i flashed back to original now but is there any tweaks to make network work on ICS?? It would be great if all those users like get to upgrade to ICS since it is one of the most cheapest android phone. Thanks
net work not working
mybe you can try this:
press *#*#4636#*#* and then. choose the right model.
if you have GSM sim card so just switch to gsm if not switch all.
homer-yang said:
mybe you can try this:
press *#*#4636#*#* and then. choose the right model.
if you have GSM sim card so just switch to gsm if not switch all.
Click to expand...
Click to collapse
i tried but no luck
Your issue is that your efs partition got corrupted and this can only be fixed by the OEM legally. I would send it in for repair.
zelendel said:
Your issue is that your efs partition got corrupted and this can only be fixed by the OEM legally. I would send it in for repair.
Click to expand...
Click to collapse
i flashed back to gingerbread and its working normally.. i just wanted to ask if there is any tweaks or mods to make network work on ICS firmware.
nitin.rizal said:
i flashed back to gingerbread and its working normally.. i just wanted to ask if there is any tweaks or mods to make network work on ICS firmware.
Click to expand...
Click to collapse
Your problem is that when you are flashing a new rom your imei number is getting deleted and hence you are not able to connect to any network. You have to take backup of your imei before flashing a new rom. You should check this link out
http://forum.xda-developers.com/showthread.php?t=2140139
Dark Wraith said:
Your problem is that when you are flashing a new rom your imei number is getting deleted and hence you are not able to connect to any network. You have to take backup of your imei before flashing a new rom. You should check this link out
http://forum.xda-developers.com/showthread.php?t=2140139
Click to expand...
Click to collapse
I tried that too . After pushing the backup MPOB_001 file to nvram it says invalid IMEI . Im being hopeless now
nitin.rizal said:
I tried that too . After pushing the backup MPOB_001 file to nvram it says invalid IMEI . Im being hopeless now
Click to expand...
Click to collapse
Can you tell me the exact steps what you did one by one starting from rooting your phone.like how you rooted it and how you are trying to flash it.
Dark Wraith said:
Can you tell me the exact steps what you did one by one starting from rooting your phone.like how you rooted it and how you are trying to flash it.
Click to expand...
Click to collapse
I flashed ICS firmware via SP flash tool then rooted it with framaroot 1.6 its was still no service and i pushed backup MPB_001 File through rootexplorer to data/nvram/md/NVRAM/NVD_IMEI/MP0B_001 and changed the file permission to rw-rw---- and rebooted the device after reboot It started showing invalid IMEI
nitin.rizal said:
I flashed ICS firmware via SP flash tool then rooted it with framaroot 1.6 its was still no service and i pushed backup MPB_001 File through rootexplorer to data/nvram/md/NVRAM/NVD_IMEI/MP0B_001 and changed the file permission to rw-rw---- and rebooted the device after reboot It started showing invalid IMEI
Click to expand...
Click to collapse
tried regenerating the MP0B_001 file??
I am facing somewhat similar issue, can you please help
http://forum.xda-developers.com/showthread.php?t=2423585

No Wifi/Mobile data/IMEI, Baseband version Unknown

I have already tried this guide (great info there):
http://forum.xda-developers.com/one...fs-corrupt-t2879061/post55488755#post55488755
Unfortunately, it didn't quite work out for me. The issue I have been having is that the phone reports unknown baseband version and there is no IMEI. Wifi was still working originally. The issues came after I flashed the latest lollipop alpha modem needed for the latest CM12 build/kernel.
After I experienced the issue, I flashed back the 44s modem. Then Wifi was also gone.
As of right now, the best I can do is:
1. Install ColorOS 2.0.0
2. OTA to ColorOS 2.0.4
ColorOS gave me Wifi back.
At this point, I tried to fastboot install TWRP per @NikoZBK suggested. The fastboot command reported successful but it still got the ColorOS recovery. So I have to...
3. Fastboot flash 30o with flash-all.bat
However, by doing so, my Wifi is gone and I still have unknown baseband version and IMEI. Therefore, I went back to (1) and (2), took out this line: fastboot flash modem NON-HLOS.bin in flash-all.bat and run flash-all.bat again.
At this point, Wifi is still working but I still have unknown baseband version and IMEI.
4. Flash pre-rooted 44s in TWRP. The issues are still there.
I also tried doing "make_ext4fs /dev/block/mmcblk0p15" in TWRP and it actually killed Wifi. I am running out of ideas. Any advice is appreciated. Thanks!
radium22 said:
I have already tried this guide (great info there):
http://forum.xda-developers.com/one...fs-corrupt-t2879061/post55488755#post55488755
Unfortunately, it didn't quite work out for me. The issue I have been having is that the phone reports unknown baseband version and there is no IMEI. Wifi was still working originally. The issues came after I flashed the latest lollipop alpha modem needed for the latest CM12 build/kernel.
After I experienced the issue, I flashed back the 44s modem. Then Wifi was also gone.
As of right now, the best I can do is:
1. Install ColorOS 2.0.0
2. OTA to ColorOS 2.0.4
ColorOS gave me Wifi back.
At this point, I tried to fastboot install TWRP per @NikoZBK suggested. The fastboot command reported successful but it still got the ColorOS recovery. So I have to...
3. Fastboot flash 30o with flash-all.bat
However, by doing so, my Wifi is gone and I still have unknown baseband version and IMEI. Therefore, I went back to (1) and (2), took out this line: fastboot flash modem NON-HLOS.bin in flash-all.bat and run flash-all.bat again.
At this point, Wifi is still working but I still have unknown baseband version and IMEI.
4. Flash pre-rooted 44s in TWRP. The issues are still there.
I also tried doing "make_ext4fs /dev/block/mmcblk0p15" in TWRP and it actually killed Wifi. I am running out of ideas. Any advice is appreciated. Thanks!
Click to expand...
Click to collapse
Give this thread a look:http://forum.xda-developers.com/oneplus-one/help/opo-efs-t2821020. Look at page 9 and post 83. I don't know if it will help with your problem, but it fixed mine a few months back.
elrey311 said:
Give this thread a look:http://forum.xda-developers.com/oneplus-one/help/opo-efs-t2821020. Look at page 9 and post 83. I don't know if it will help with your problem, but it fixed mine a few months back.
Click to expand...
Click to collapse
Thanks for the info. I tried that but didn't work out for me unfortunately.
Finally, the issue is fixed!!! Here is what I have done:
1. fastboot flash 22R
2. reboot (No Wifi, No IMEI, Unknown Baseband version)
3. fastboot flash TWRP
4. reboot (Still No Wifi, No IMEI, Unknown Baseband version)
5. Download and copy OnePlus ColorV2.0.4i Beta Native.zip to internal
6. reboot to TWRP and flash OnePlus ColorV2.0.4i Beta Native.zip
7. reboot
8. Wifi, IMEI, mobile data, and baseband version are BACK!
radium22 said:
Finally, the issue is fixed!!! Here is what I have done:
1. fastboot flash 22R
2. reboot (No Wifi, No IMEI, Unknown Baseband version)
3. fastboot flash TWRP
4. reboot (Still No Wifi, No IMEI, Unknown Baseband version)
5. Download and copy OnePlus ColorV2.0.4i Beta Native.zip to internal
6. reboot to TWRP and flash OnePlus ColorV2.0.4i Beta Native.zip
7. reboot
8. Wifi, IMEI, mobile data, and baseband version are BACK!
Click to expand...
Click to collapse
Where did you find this 'OnePlus ColorV2.0.4i Beta Native.zip' file?
Vleiss said:
Where did you find this 'OnePlus ColorV2.0.4i Beta Native.zip' file?
Click to expand...
Click to collapse
can u pls share this file if u find it..?
OnePlus ColorV2.0.4i Beta Native.zip
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
rombdeta said:
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
Click to expand...
Click to collapse
I think its illegal to share these kind of information. I might be wrong though.
I know that you will not clone the IMEI but its against the rules to share this info.
Someone will be able to help you, I guess!!!
rombdeta said:
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
Click to expand...
Click to collapse
Shankar9822 said:
I think its illegal to share these kind of information. I might be wrong though.
I know that you will not clone the IMEI but its against the rules to share this info.
Someone will be able to help you, I guess!!!
Click to expand...
Click to collapse
Hi, @rombdeta, unfortunately for you @Shankar9822 is right, nobody can share their EFS backup with you. It's up to each user to backup their own EFS partition for safekeeping, this information is readily available all over this device section on XDA and on the OnePlus forums.
Transmitted via Bacon
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
After 10 days without the phone, and read about QCN in many sites and much info, i repair my device. For anyone who has tried all possible solutions, to no avail, they sent me a message, I will gladly help you. But I can't open a guide as I have understood, so this is the only solution I can currently provide. Thanks everyone. Greetings To You!
rombdeta said:
After 10 days without the phone, and read about QCN in many sites and much info, i repair my device. For anyone who has tried all possible solutions, to no avail, they sent me a message, I will gladly help you. But I can't open a guide as I have understood, so this is the only solution I can currently provide. Thanks everyone. Greetings To You!
Click to expand...
Click to collapse
If you're going to help people please don't do it via PM, do it here in the forums, solutions don't benefit the community when they're hidden away in an inbox.
Transmitted via Bacon
Ok, i will make a guide. OnePlus people told me they have no redress for the device, so I started reading and researching and with the help of many people, I put together a QCN with valid values, hand made in RF NV Item Manager. Therefore sought an original QCN. Tomorrow i will make a full guide. Regards and sorry about my english.
Thanks, good idea.
PS. There's nothing wrong with your English.
rombdeta said:
Ok, i will make a guide. OnePlus people told me they have no redress for the device, so I started reading and researching and with the help of many people, I put together a QCN with valid values, hand made in RF NV Item Manager. Therefore sought an original QCN. Tomorrow i will make a full guide. Regards and sorry about my english.
Click to expand...
Click to collapse
Do you have 2g (gsm only) and 3g/2g auto mode ? ( you probably dont need 2g but some do).
rombdeta said:
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
Click to expand...
Click to collapse
Hi, I have restored with QCN and edited now I have my IMEI and Baseband but the signal is 0 dbm 99 asu
I've tried to flash again the modem, change rom but nothing as changed... How do you have solved?
Yeah I haven't been able to get any service on my phone for awhile now it's been nothing but frustrating... Nothing I do seems to work I've on the verge of just throwing this phone against the wall a few times
Sent from my D6503 using XDA Free mobile app
No Wifi/networ/imei working
rombdeta said:
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
Click to expand...
Click to collapse
Hello,
Can you please help me with this.
My phone showing unknown baseband version.

Strange bricked. Does not work WiFi, BT and radio.

After numerous reinstallations CM and other roms I caught a strange bug.
Now I is not working WiFi and BT, fm radio. it does not matter at what firmware. on miui or custom rom. also after the installation of any version of miui version puts custom it is not work... black screen(
MAC address blank in the information about phone.
Are there any ideas how to deal with it and how to fix the phone?
I use fastboot and twrp for install rom. not use mi recovery
to @sharan.nyn There is a special version of tvrp that makes backups of absolutely all partitions. You can do it and send me?
Can you tell me how to take backup and what exactly will be the file size. I think it would big files.
sharan.nyn said:
Can you tell me how to take backup and what exactly will be the file size. I think it would big files.
Click to expand...
Click to collapse
Yes, they are big, but probably can not backup such as the cache systems date. then the backup will be small.
Oh damn. I have a very limited bandwidth. It would take me hours or even days to upload such a file. I hope someone with a better bandwidth can help you
sharan.nyn said:
Oh damn. I have a very limited bandwidth. It would take me hours or even days to upload such a file. I hope someone with a better bandwidth can help you
Click to expand...
Click to collapse
https://drive.google.com/file/d/0ByzOayL0qwKaa0UwMFlkaG1XNEE/view?usp=sharing
It tvrp backup for all sections.
Make a backup without system, Dalvik cache, data, cache. Maybe he will not be big, and you can upload it. I have no one else to ask.
Where did you get the recovery image? And is it compatible with our device? I think it must be compiled for our device for it work.
This changed magdag twrp recovery. It is fully compatible. it makes a full backup.
backup size ~100-150mb without system cash data dalvikcash
PavelPerm said:
This changed magdag twrp recovery. It is fully compatible. it makes a full backup.
backup size ~100-150mb without system cash data dalvikcash
Click to expand...
Click to collapse
Sorry dude I didnt get a notification for the quote. I have backed up. It was about 30 partitions and its 380MB. I'll try to upload it ASAP and send you the link.
Update: Haha compressed it with winrar 5. Used the best compression and got it to be 30MB.
https://drive.google.com/open?id=0B4UT4dU4LpjJMExhSlJtVE9FeUk
Thank you man! I will test it tonight or tomorrow!
PavelPerm said:
Thank you man! I will test it tonight or tomorrow!
Click to expand...
Click to collapse
Ok great. Keep us posted on the status
sharan.nyn said:
Ok great. Keep us posted on the status
Click to expand...
Click to collapse
PavelPerm said:
Thank you man! I will test it tonight or tomorrow!
Click to expand...
Click to collapse
I would advise you not to flash ALL PARTITIONS of one device on to another. This is due to the fact that it includes EFS partition which is unique in a way that it contains your IMEI # and other details which are unique to every device. This can brick your phone permenantly. A flash without ESF partition can be great.
Good luck !
Usually BT, WiFi, Radio trouble occurs it you have messed up with your motherboard hardware values. Try going back to the ROM you were before on and make sure you haven't flashed any wrong radio for your device. ( like your radio was meant for India and you flashed China or any other firmware. )
Do quote back in case you expect an answer!
after installing a full backup does not run the sim card. If you load Fail ESF from its own backup, the SIM card is starting to work, but the WiFi did not work. From this it follows that mi4i imei stored somewhere else and booting phone compares it imei. The question is, where are still kept IIMEI files?
PavelPerm said:
after installing a full backup does not run the sim card. If you load Fail ESF from its own backup, the SIM card is starting to work, but the WiFi did not work. From this it follows that mi4i imei stored somewhere else and booting phone compares it imei. The question is, where are still kept IIMEI files?
Click to expand...
Click to collapse
I have a similar problem to you : after a hardbrick, my IMEI files are uknown. How did you manage to install the backup given by sharan.nyn ?
BTW, when you backup the EFS with Mi4i toolkit, two files are shown : /dev/block/mmcblk0p20 and mmcblk0p21. I don't know what to do with that, but I'm pretty sure they have IMEI in them.
i am facing similar issue but my sim is not detecting on first slot but it is detecting on second slot
even my imei is showing correctly should is go for replacement coz i bought it few days back

NV Backup Warning - Dynamic partition invalid. Quite the riddle.

UPDATE: So hopefully this title and OP update take as I don't want to spam the forum with threads. Despite have dozens of Android phones since the original G1 I am stumped by this, but I imagine a guru could solve this puzzle. Here we go:
I messed up my phone partition table when I messed up the last step from the dual boot TWRP thread. I tried fixing my newly bricked phone using MSM tools but it's a converted GM1915 Tmobile OP7P running global firmware. The Tmobile stock MSM recovery pack MEGA link has gone dead, so I tried the Tmo to Int'l conversion files again. The phone booted, but I kept getting "NV Backup warning - dynamiic partition is invalid". I could make calls, but had no orientation sensor, no mobile data, baseband shows blank in fastboot mode, etc. I've tried flashing fastboot ROMs as well but no matter what, the dynamic partition invalid message pops up.
It seems ike this is an EFS issue, so late last night I tried a few more things. IIRC, I was able to flash that persist.img via "fastboot flash persist persist.img", and in any case most everything seems to work now, including the sensors. But, I'm still getting that dynamic partition invalid error and no baseband shows on my bootloader screen. I
'm guessing there's still some corruption in EFS? I'd understood from reading that even with persist.img one good thing was to erase the modem files and persist first, because then they will regenerate, according to this post.
So, I tried these commands with plans to then flash persist.img again....
fastboot erase modemst1
fastboot erase modemst2
fastboot erase persist
It won't let me erase them though, as it says the critical partitions are locked. Do you think this path might fix whatever issue is triggering this message, and if so, does anyone know how to do it? I think I may have use dd, but I'm not sure which partitions I'll be looking to erase and how to do it that way, either.
Maybe try this: https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424
¿GotJazz? said:
Maybe try this: https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424
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Thanks, but that's what I've been trying. No joy so far. I need to check because actually it may have hung on params or some other issue that an L2 driver update could fix. Of course me figuring out how to fix that will be the next feat, LOL.
Updated thread title and OP with new info. Phone almost back to 100%, but still getting an error message.
So another update as I learn. Now that I've gotten TWRP and Magisk back on it, I realized there is another odd thing with the phone now. Just before the bootloader unlocked warning screen, for a fraction of a second there's a message that says SMT Download Failed. More reading seems to suggest that using an SMT recovery in conjunction with MSM tool can fix the SMT Download Failed message. Most of these say you need to have an EFS backup, which some suggest that you can wipe EFS (as indicated in OP) and it will regenerate.
I've taken a TWRP backup of EFS, but I'm not sure whether I should proceed with the wipe processes with so many saying you should have an EFS backup (lesson learned, yes you should - and don't delete/misplace it like I did). Anyway, I'm wondering if going through that process might resolve that, as it could be a flag that didn't get set right, or whether or not there's some issue with my EFS that means my backup from the current state is worthless.
Maybe my EFS isn't corrupt after all, maybe it was the persist.img that needed to fix the sensores and now I'm good except for some flag that's triggering the SMT Download Failed message and the subesquent dynamic partition invalid message?
Maybe you could do that on twrp by terminal commands, some fastboot command dont work on Bootloader but in twrp work
yulian6766 said:
Maybe you could do that on twrp by terminal commands, some fastboot command dont work on Bootloader but in twrp work
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That's actually an idea I was kicking around for my next move. I was hoping that before I do that, though, I could get a sense from one of the gurus as to whether I'll be able to recover my IMEI and such afterwards.
vettejock99 said:
That's actually an idea I was kicking around for my next move. I was hoping that before I do that, though, I could get a sense from one of the gurus as to whether I'll be able to recover my IMEI and such afterwards.
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Your problem is recover your IMEI?
yulian6766 said:
Your problem is recover your IMEI?
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The phone shows IMEI right now, and calls and mobile data work, so except for the weird " SMT download failed!!! please check your download flow is right" message at boot start and the NV Backup UI warning Dynamic partiton invalid messages the phone otherwise seems just fine. I'm pretty comfortable with system, boot, and data partition stuff from all my time at this, but I'm just being extra cautious that by erasing my modems via some sort of commands or SMT flash that I can at least get it back to where it is now even if I can't get back to an error-free state.
Have you tried flashing QCN file?
yulian6766 said:
Have you tried flashing QCN file?
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I had heard about and used QPST before, but QCN is new to me. I did a quick search and it sounds like on some phones like ASUS ROG, you REALLY need to have one to recover from erasing your modems. Oneplus phones recreate those if they are erased, don't they?
Create a QCN backup from QPST of your phone and flash it again, maybe that will fix your problem.
Hey man I know I posted the other one up with the issue too but thanks for this after seeing you flashing the persist fixed your sensors I tried and walla they are good now! I still have the same SMT failed and NV Backup warning but at least the phone can auto rotate.
Velrix said:
Hey man I know I posted the other one up with the issue too but thanks for this after seeing you flashing the persist fixed your sensors I tried and walla they are good now! I still have the same SMT failed and NV Backup warning but at least the phone can auto rotate.
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Good stuff. I'll definitely post a resolution here if I get it all. Just glad to have the phone working again for sure!
yulian6766 said:
Create a QCN backup from QPST of your phone and flash it again, maybe that will fix your problem.
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I went and installed QPST again and I can get it to see the phone in EDL mode, but I don't believe I have the drivers to get it into diagostnic mode. If I try it shows GM1915 with unknown USB drivers, but I've downloaded some and they don't seem to be able to get the device recognized properly. Until I figure that out, I can't pull QCN, I don't think.
I did go ahead and try a SMT flash. Unfortunately, while I've gotten it to start, it ultimately gets to "Param preload" then I see the Status of Connection change to N/A and then it just hangs....grrrr...
vettejock99 said:
I went and installed QPST again and I can get it to see the phone in EDL mode, but I don't believe I have the drivers to get it into diagostnic mode. If I try it shows GM1915 with unknown USB drivers, but I've downloaded some and they don't seem to be able to get the device recognized properly. Until I figure that out, I can't pull QCN, I don't think.
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You have to install the right drivers
https://forum.xda-developers.com/rog-phone-2/how-to/guide-restoring-imei-efs-erasing-t4071159
This drivers should work for me
yulian6766 said:
You have to install the right drivers
https://forum.xda-developers.com/rog-phone-2/how-to/guide-restoring-imei-efs-erasing-t4071159
This drivers should work for me
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That's the one I was using. Just downloaded and compared the hashes. Now that I think about it, I chose WWAN-DHCP mode. Should I have chosen ETHERNET-DHCP?
vettejock99 said:
That's the one I was using. Just downloaded and compared the hashes. Now that I think about it, I chose WWAN-DHCP mode. Should I have chosen ETHERNET-DHCP?
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I choose the same option
yulian6766 said:
I choose the same option
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So if we're both choosing WWAN-DHCP for the driver mode, I'm not sure why it wouldn't work. Right now everything is working and I told the NV Backup UI notification to Never Show so it will probably be a few days before I get around to trying to get the whole thing to flash properly. My OCD is really the only thing that would drive me to do it

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