Database Users

[Info] EFS/Lost IMEI - Must to read for every Newbies.

What is EFS
This part of the device contains some important and some basic info related to our device identity like Bluetooth MAC address, wireless devices MAC addresses, product code (also in the nv_data.bin) and the very main IMEI address (nv_data.bin), programming parameters for the device such as your account information (phone number, etc), data provisioning parameters, and a whole bunch of other things. So you can guess it's will be different for each device and one can't use others.
How it can corrupt :
- Any bad flashing, mishandling system modification can cause this.
- Also It can be corrupted by downgrading stock ROM. If you flash any old ROM (older to first ME6) on newer ROM (ME6 or any other rom released after ME6) it can corrupt EFS. Basically newer ROM believed to have new kernel that changes EFS data which older Modems can't read and results to fail in reading IMEI.
Impact on device/How I know I have corrupted EFS
When there is EFS partition is corrupted, device loses IMEI and due to this device can't gets connected to network. Baseband info also sometimes shows unknown.
-Check your IMEI in setting / by dialling *#06# if it is null OR if it starts with 0049** then IMEI is generic and corrupted. In Normal case IMEI which you can see in device setting or dialing *#06# is exactly same you can see on bill/box/sticker under battery compartment
-If you are unable to connect to network in spite of correct IMEI, chance are
A. Your device is Locked to specific Network OR
B. Your device is banned due to tempered IMEI
-If your AP,CP,CSC all are correct and even you are getting error (unknown CSC XXX) on kies update, it may be due to corrupt Product code in EFS. Read This for detail.
What care should i take
Before flashing anything, first thing you should do is to make EFS backup. Every person who have rooted device should make EFS backup earliest and place it to safer place on PC and /Cloud.
If you are on older ROM, make EFS backup on older ROM as well make another after upgrading ROM too.
If you have already updated to newer ROM, make backup on current ROM.
Here is different common methods for EFS Backup/Restore [There are hundreds of tools available on play store and don't use blindly, as unsupported tool can cause EFS partition failed to mount and to recover it need to use adb shell and more. Better use one of the below mentioned time tested tools]
You must have device rooted. Read post #2 of this thread, how to root Note2
you can use any of method said below.
1.With Aroma installer - No need to have PC, need CWM/TWRP installed. Here is Other Tool I recommend to must have for Newbies, Which also have many other options.
2.From Device itself - No need of PC, just requires installing application from play store.
3.Philz recovery - Also you can find this option on other CWM/TWRP, but i have tested only this.
4.EFS Backup/Restore Tool - you needs to use PC to work this.
How to recover lost IMEI that happens with downgrading ROM
If you have lost IMEI just by downgrading (as said by above by flashing older ROM), still you can recover IMEI without having EFS backup.
-Again upgrade ROM will restore IMEI OR
-Flash latest Modem. You can find it here.. You can download MG1 modem and flash using PC Odin with 'Phone' tab instead of PDA.
Remember above said works only if IMEI is corrupted by downgrading ROM only, if it was corrupted by other things, this won't be helpful.
Also Read This, if you have issue restoring EFS OR device stuck to factory mod.
Hope this will find helpful to all newbies regarding question about EFS and IMEI problem. I have posted this to general section so newbie can post to it if they have any queries.

Informative
Very informative and helpful thread Brother :good::good::good::good:

:good: great guide ketan :good:

you are one of the best things to happen to Note 1 and Note 2 as well..!!
god bless ya bro..! :good::good:

Very informative in precise words!
Thanks, +1:good:

There is already a post about this.
Sent from my GT-N7100 using XDA Premium 4 mobile app

Zionator said:
There is already a post about this.
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Can you link to it? I have not found in general section where newbies can post. Though you can report it to moderator if double post.
Sent from my GT-N7100 using xda premium

The EFS image backup has proved to be immensely helpful all the way with the Terminal emulator!:good:
Please confirm: can the EFS backup image be flashed with Philz Recovery as an alternative to the Terminal emulator?

Provided you put it to correct place.
Sent from my GT-N7100 using xda premium

Thank you for info and helpful Pro ^_^
Sent from my GT-N7100 using XDA Premium 4 mobile app

You can easily make efs backup and restore with this app Andromizer(free version) with one click
https://play.google.com/store/apps/details?id=com.j.y.daddy.customizer
These models of note 2 supported
GT-N7100,GT-N7102,GT-N7105,SHV-E250S,SHV-E250K,SHV-E250L
SPH-L900,SGH-T889,SGH-T889V,SGH-L317,SGH-I317M,SCH-I605,SCH-R950

dr.ketan said:
Can you link to it? I have not found in general section where newbies can post. Though you can report it to moderator if double post.
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Finally you have listened my request.
Dr.Ketan, he may be talking about this thread.
This guide is very helpfull. :thumbup:
May helps and warn all mates before flashing different roms.
Please make this thread sticky.
sent from my GT-N7100. Press thanks if I helped..

It's already been added to sticky roll up (list of thread worth to stick)
Sent from my GT-N7100 using xda premium

dr.ketan said:
What is EFS
This part of the device contains some important and some basic info related to our device identity like Bluetooth MAC address, wireless devices MAC addresses, product code (also in the nv_data.bin) and the very main IMEI address (nv_data.bin), programming parameters for the device such as your account information (phone number, etc), data provisioning parameters, and a whole bunch of other things. So you can guess it's will be different for each device and one can't use others.
How it can corrupt :
- Any bad flashing, mishandling system modification can cause this.
- Also It can be corrupted by downgrading stock ROM. If you flash any old ROM (older to first ME6) on newer ROM (ME6 or any other rom released after ME6) it can corrupt EFS. Basically newer ROM believed to have new kernel that changes EFS data which older Modems can't read and results to fail in reading IMEI.
Impact on device/How I know I have corrupted EFS
When there is EFS partition is corrupted, device loses IMEI and due to this device can't gets connected to network. Baseband info also sometimes shows unknown.
-Check your IMEI in setting / by dialling *#06# if it is null OR if it starts with 0049** then IMEI is generic and corrupted. In Normal case IMEI which you can see in device setting or dialing *#06# is exactly same you can see on bill/box/sticker under battery compartment
-If you are unable to connect to network in spite of correct IMEI, chance are
A. Your device is Locked to specific Network OR
B. Your device is banned due to tempered IMEI
-If your AP,CP,CSC all are correct and even you are getting error (unknown CSC XXX) on kies update, it may be due to corrupt Product code in EFS. Read This for detail.
What care should i take
Before flashing anything, first thing you should do is to make EFS backup. Every person who have rooted device should make EFS backup earliest and place it to safer place on PC and /Cloud.
If you are on older ROM, make EFS backup on older ROM as well make another after upgrading ROM too.
If you have already updated to newer ROM, make backup on current ROM.
Here is different common methods for EFS Backup/Restore
You must have device rooted. Read post #2 of this thread, how to root Note2
you can use any of method said below.
1.From Device itself - No need of PC, just requires installing application from play store.
2.Philz recovery - Also you can find this option on other CWM/TWRP, but i have tested only this.
3.EFS Backup/Restore Tool - you needs to use PC to work this.
How to recover lost IMEI that happens with downgrading ROM
If you have lost IMEI just by downgrading (as said by above by flashing older ROM), still you can recover IMEI without having EFS backup.
-Again upgrade ROM will restore IMEI OR
-Flash latest Modem. You can find it here.. You can download MG1 modem and flash using PC Odin with 'Phone' tab instead of PDA.
Remember above said works only if IMEI is corrupted by downgrading ROM only, if it was corrupted by other things, this won't be helpful.
Also Read This, if you have issue restoring EFS OR device stuck to factory mod.
Hope this will find helpful to all newbies regarding question about EFS and IMEI problem. I have posted this to general section so newbie can post to it if they have any queries.
Click to expand...
Click to collapse
Dr. Ketan,
Kem chho bhai!!
I am facing problem with EFS , i read your post and come to know that my IMEI is corrupt. It is starting with 0049*** and not matching with phone sticker. Following procedure mentioned in your post but no success!! STill am not able to connect network how should i proceed now??
Already flashed kernel, recovery, modem from pc odin also tried to switch to stock rom. i.e. UAE i guess now downloading Saudi Arabia and will gong to try all.
Please help!!!

You need to mention how does it happen in Details.
How does happend it, i mean what did you flashed? And what rom you had when you flash it.
Do you have efs backup?
Sent from my GT-N7100 using xda premium

Hi Dr. Ketan,
No I don;t have EFS backup and till today flashed many times but not faced any problem like this.
I recently flashed PRobam rom which works on 4.3 android and later return back to my region flashing CWM recovery. Later i tried toolkit for note 2 and tried mod for camera HD.But later come to know that toolkit has no support for my rom.
I think i lost my IMEI while flashing Probam but using wrong baseband trough toolkit can also be problem.No so sure.
Tried to go back on regional rom by different methods but no success.
Thanks!!

Basically it happens if you flash older kernel (it may happened by wrong selection in toolkit)
Reflash latest modem and try.

Just want to get this straight into my head here before I go diving into flashing a ROM sorry for being silly I just like to get it clear lol
Ok my phone is on DME6 so that means I can't flash any samsung based custom ROM that is using a version lower than that yes? but AOSP ROM's don't matter as they don't use the modem so won't corrupt the EFS correct? I am aware that for the SIII there was a flashable zip you can use to make the modem the newer one for flashing older firmware custom ROMS is there one for this? I want to flash this ROM or the HD revolution ROM (HD rev showing an older version in the title) mainly want a custom stock ROM that gets rid of that pesky SMS conversion thing
Thanks for your time

You have already flashed ME6 so you will have latest modem so yes flashiung older ROM you will lose IMEI. regarding AOSP ROM i am not sure, i have never used any AOSP ROM and not following so not familiar with that.
1.Make EFS backup Use one of the tool mentioned in OP)
2.Flash desired ROM, if you select older ROM and lose IMEI, you can find latest modem from my All in one thread (look signature) post #7. simply extract and use modem.tar.md5 to flash with 'Phone' tab (Not PDA) of Odin.

yeah I made a backup of the EFS (on the ME6 version not the older as this is how i got the phone) so I can use any stock based ROM as long as i flash that modem? think i'll probably stay with a ROM labeled as ME6 anyway to keep it easier on myself

[GUIDE] How to restore EFS on I9300

It started when I was trying Swapper 2 from the Play Store. Will, I guess I should read the comment, but I didn't. And yes, it corrupted my EFS and my phone was stuck at the Samsung boot logo. I have tried many method I can search over XDA, but non works. (I'm not sure about this one, which I only find while writing this guide.)
This is by far the easiest method for me, and it doesn't involve Linux, which was a pain since I haven't use Linux in years. I had to VM one for some of the XDA method, which didn't work at end of the day.
1. Flash the firmware with ODIN (original firmware) with original version that you had before. Not the custom ROM, but the original firmware version.
2. Recover with EFS with the EFS image attached in the thread. I used kTool as it faster and easier than any other tool. (Yes, I tried them all...)
3. Download Chimera Tool and buy their cheapest license (or whatever you want) which is €12.90.
That it. Yes you pay, but it the easiest, and most time saving. I spent a week Googling, trying all this various method over ADB, and no, non works. And for Samsung to repair, which they refuse and simply want to change a board and charge me US$ 200 for it, I rather pay €12.90 and do it myself. If you still have problem connection to the network after restoring IMEI, please read post 3.

FAQ
If you need the ODIN, you can find theme over here. Myself I've always used version 3.07. And as always under options you only need the 'Auto Reboot' and 'F. Reset Time' checked. Whether it a modem or stock ROM, click on 'PDA' choose the correct file and than click on start.
Q: Won't flash the EFS image I provide means I'm getting your IMEI?
A: I've wondered this as well. If it were so simple, there wouldn't be so many thread on recovering and so may people cry for help... (I'm included). As my last resort before I buy Chimera Tool's license, I flashed over my bro's S3 EFS, which I didn't want to, as I said it was a last resort. And as it turned out, I didn't get his IMEI. Instead I got his phones' Update S3 product code and serial number. And that was it. IMEI has changed from my previous 'NULL' to the infamous generic 004999010640000.
Q: Why do I still need to do EFS recovery if Chimera Tool can restore it.
A: I've experiment this myself, as I also absolutely did not want my bro's EFS. But unfortunately Chimera can only restore the IMEI and serial number, not rest of the missing files in the EFS folder. If I repartition the EFS folder and using Chimera to restore my IMEI, it would show the correct IMEI but still refuse to connect to the network. And it will have the annoy overly showing my CSC and other bunch of info on my homescreen, as if my EFS is still corrupt.
Q: Does Chimera need some special box?
A: No, a normal USB cable will work. That pretty much means standard ADB command would work, but unfortunately I can't find any info on that. I wish I did, so I don't need to get the Chimera Tool but there was no other way for me. I was also sceptical at first, as I read over many forums and they say it impossible with some sort of service box/tool. I gambled, and luckily it worked out.
Q: Where does the EFS image go for kTool?
A: Sorry, don't remember. Google it, or use the backup option first than overwrite the EFS.IMG file. That what I did.
Q: Now that I got my IMEI back, how do I back it up?
A. Use kTool again? Personally I use TWRP, as I think it the easiest. Since you can do it at a recovery level. No trying of ODIN the OS for corrupt OS before restoring the EFS. In any case, Chimera would still be function for the next couple of month and you can still mess around until than.
Q: Why the need of ODIN the original firmware?
A: I was on a custom TW ROM and Chimera didn't work. Maybe CM and other custom ROM will will work, you can give it a try. But this is how I did it and I know it works.

EFS / Baseband(modem)
It easy to criticize a member and simply tell him use the 'search function', but without realize sometimes the article will help you the most, simply just doesn't come up. Murphy's law. I was on stock 4.1.2 and after restore IMEI and EFS, the phone indicate it register on the network, but I couldn't make calls or connect to the net. This is a vary good article regarding EFS, and sadly it didn't come up easily on my search result. I came across it after I fixed the issue with tones of Googling and was searching for a different topic. But I understand people that desperate need to solve the problem quick (like I was) simply spent hour reading over hundreds of post under that article is just testing a persons sanity. So I'm going to summarised some of the stuff along with my experience. First thing you need to know:
- EFS v2 Basebands (modem) was introduced at Android 4.3 and can read EFS partition v2 and EFS v1
- EFS v1 Basebands (modem) CANNOT read EFS v2, ONLY EFS v1
If you phone is still under warranty and cannot connect to network, the best way is to stay on stock firmware and use TriangleAway to reset the flash counter and sent back to Samsung. With your IMEI number correctly showing, Samsung has absolutely no excuse on not fixing it. If you are no longer warranty, read on.
Q: My IMEI is now showing correctly but I still cannot make calls!
A: This is where the Ariza Patch kicks in. If you are on stock fimware 4.1.2, you need the Ariza Patch to fix the baseband. But after long reading over plenty post, it seems once this patch has been done, it irreversible. So beware. Before you try this patch, you may want to try update to the stock 4.3 firmware and see if it solves the problem before applying the patch.
Q: I'm on stock 4.3, now what?
A: If you still have problem connecting to the network, you need a patched modem (baseband) file. You can find them here. I think this is from the original author who did it. Instead of searching over the forums and files scatter all over the place, I'm pretty sure I dug the link out of XDA while reading through. Someone please tell me if it isn't and provide the the proper link. I'll fix it.
Q: I was on stock 4.1.2 and went to a custom 4.3 ROM, what fix shall I apply?
A: This was my scenario. And I was kind of desperate as well since I just fix my IMEI and was expect the phone to work. I wish I could come across the article on top earlier. I would've tried stock 4.3 first instead of applying the Ariza patch. Any ways, I was on stock 4.1.2 and it didn't work, so I tried a modified 4.3 TW ROM. I wish the OP would mention the EFS thing, which he didn't. I'm not blaming him or anything, but seriously not everyone keep in track of what happening with Android. The OP should mention about the EFS thing or simply post a link such as the topic above and just let people know instead of wasting hours on figuring out why it wasn't working. What I did was, after using the mod 4.3 TW ROM, the IMEI went crazy. So I thought it was corrupt again, so I ODIN back the stock 4.1.2 TW. Than I applied the Ariza patch, wolla, I could call and browse again. So I decide to give the mod 4.3 TW ROM another try. To my surprise, the IMEI still went crazy. So after more Googling only I found out because I wasn't on stock 4.3, my baseband would still 4.1.x. I tried the modem (baseband) patch which for some reason still did not work for me. So I decide to keep the stock 4.1.2 baseband and simply use a custom kernel that could read EFS v1 and v2 - Boeffla Kernel. Remember to download the 4.3 kernel not the 4.1.x! That it, you should now have a working phone.

I just use SA manager .It will backup EFS & MODEM .store it in Ext SD .If EFS corrrrupted just install SA mgr back & restore .
Most important is backup and its very simple process

u need HKCtool to backup efs both img and tar files first of all.
if this is not possible u need a stock rom and odin .after installing stock rom the efs will be repaired.

nainaabd said:
I just use SA manager .It will backup EFS & MODEM .store it in Ext SD .If EFS corrrrupted just install SA mgr back & restore .
Most important is backup and its very simple process
Click to expand...
Click to collapse
Didn't try SA manager as I was in a rush and looking specifically for Samsung phones only. But it definately somehting I want to try if I get a Sony phone. Though I still prefer at a recover level. It just so simple.

keenimo said:
u need HKCtool to backup efs both img and tar files first of all.
if this is not possible u need a stock rom and odin .after installing stock rom the efs will be repaired.
Click to expand...
Click to collapse
TAR file is just a compressed version of IMG file.

im in nairobi kenya, unfortunately i can not buy the chimera tool because we dont have the necessary paying methods. anyone who can lend me theirs please? my S3 has the generic imei, repair would cost 15k here, which is too much. anybody that can help will be highly appreciated.

TNCS said:
It started when I was trying Swapper 2 from the Play Store. Will, I guess I should read the comment, but I didn't. And yes, it corrupted my EFS and my phone was stuck at the Samsung boot logo. I have tried many method I can search over XDA, but non works. (I'm not sure about this one, which I only find while writing this guide.)
This is by far the easiest method for me, and it doesn't involve Linux, which was a pain since I haven't use Linux in years. I had to VM one for some of the XDA method, which didn't work at end of the day.
1. Flash the firmware with ODIN (original firmware) with original version that you had before. Not the custom ROM, but the original firmware version.
2. Recover with EFS with the EFS image attached in the thread. I used kTool as it faster and easier than any other tool. (Yes, I tried them all...)
3. Download Chimera Tool and buy their cheapest license (or whatever you want) which is €12.90.
That it. Yes you pay, but it the easiest, and most time saving. I spent a week Googling, trying all this various method over ADB, and no, non works. And for Samsung to repair, which they refuse and simply want to change a board and charge me US$ 200 for it, I rather pay €12.90 and do it myself. If you still have problem connection to the network after restoring IMEI, please read post 3.
Click to expand...
Click to collapse
you can also downgrade to 4.0.4 and do flash i9300 efs.tar via odin 3.07 but first backup your EFS with helroz's app from here https://market.android.com/details?id=com.boiteoutilssgshelroz&feature=search_result or use any other efs backup maker
But YOU NEVER NEED TO RESTORE EFS after a flash or whenever, just in case you have an issue with it.
if u have 0049xxxx or 00xxxx imei just flash I9300XXUNA7 or any latest android 4.3 and that's it you have your unknown baseband and null imei fixed aka efs corrupt issue.
Warning!!!!
i am not responsible if you get any damage to your device as per my experience i have fixed many i9300's efs and didn't get any problem .
Good luck!
(CHANGE THE ATTACHED FILE'S EXTENSION TO .md5)

Xubair91 said:
you can also downgrade to 4.0.4 and do flash i9300 efs.tar via odin 3.07 but first backup your EFS with helroz's app from here https://market.android.com/details?id=com.boiteoutilssgshelroz&feature=search_result or use any other efs backup maker
But YOU NEVER NEED TO RESTORE EFS after a flash or whenever, just in case you have an issue with it.
if u have 0049xxxx or 00xxxx imei just flash I9300XXUNA7 or any latest android 4.3 and that's it you have your unknown baseband and null imei fixed aka efs corrupt issue.
Warning!!!!
i am not responsible if you get any damage to your device as per my experience i have fixed many i9300's efs and didn't get any problem .
Good luck!
(CHANGE THE ATTACHED FILE'S EXTENSION TO .md5)
Click to expand...
Click to collapse
From what I understand, that still under the condition of prior having an EFS back-up first, right? My guide is for people who doesn't. Like in my situation, where the app screwed up the EFS partition and I had no back-ups.
If you really want in details - Swapper 2 moved the EFS partation on to my ext SD card and format the EFS partition. I was in a flat panic with the soft-brick froze at the Samsung boot logo, assume the SWAP was on the ext SD and screwed it up than format the ext SD. Well, boom, without expectation the app would do something like that and had no prior experience with EFS - no back-ups of EFS at all. And no, full nandroid back-up from CWM does not contain EFS, I've tried that. This isn't some normal scenario of incompatibility between kernel/ROM and EFS/Modem. This is recovery guild for corruption of EFS with NO back-ups.

trying ....

mezo_mmm said:
trying ....
Click to expand...
Click to collapse
And how did it go? The suspense it killing me .

[Q] Galaxy Young Startup with Red screen of death

Hi, i would like to find a way to fix a red screen problem.
A year ago i had a black screen and fixed it, used that solution for the red one but doesn't work.
Click to expand...
Click to collapse
When i start my galaxy young after the Galaxy Young GT-S5360 splash it turns into a red screen then shuts down.
Click to expand...
Click to collapse
I originally used Qualcomm NV Tools to read the SPC Code,
then i went into ADB shell & did su + setprop ril.MSL 123456, it worked fine, and the phone started good, but still no MSL / SPC Code, also used MSL Reader but didn't work. Also it didn't ask for root permissions.
Click to expand...
Click to collapse
Then here problems come. A red screen of death appears.
I tried using my USB Jig (even if download mode works without) to put the phone in download mode,
it worked, then connected to the computer using its original USB cable, before using Odin.
I though there could be a difference between "Factory" and "Odin" mode.
Used Odin version is 3.07 : The one that comes with "T Flash, Flash Lock, Nand Erase All".
Click to expand...
Click to collapse
I thought it was an efs problem. But how could i flash efs if totoro.pit comes with an EFS partition that doesn't have an img file? (the --11 Entry EFS without Image flash name).
I used PIT Magic (part of EFS Pro) to insert "efs.rfs" in Flash Name + FOTA, saved the file.
Click to expand...
Click to collapse
I checked re-partition and selected the totoro.pit file, i also've written "PhoneEnable=1" in Odin3.ini to use Phone Bootloader Update feature.
I inserted the Bootloader, PDA, Modem, & CSC Files. I checked Phone Bootloader Update.
The flash was fine, & efs.rfs (my most recent EFS backup image) flashed correctly into phone's.
Click to expand...
Click to collapse
But the phone still shows the red screen. I think the red screen is caused by "setprop ril.MSL 123456",
as i used qualcomm NV Tools many times and phone always worked fine.
Click to expand...
Click to collapse

The efs partition is usually not mountable in a galaxy y
Remove the sd card from your phone
Go into download mode
Flash the firmware from my firmware thread (links in my signature)
Never flash a pit file or bootloader - if you choose the wrong one you will brick your phone as you have discovered
If you can't successfully boot the phone after that you will have to flash the correct bootloader via a jtag - if you don't have one goto a repair shop as they cost about £200 UK pounds
If after that it still doesn't work might have to replace motherboard but you might as well put the money towards a new phone

Hi marcussmith2626,
I flashed Bootloader in the s5360 ODD package and used totoro.pit file
marcussmith2626 said:
If after that it still doesn't work might have to replace motherboard but you might as well put the money towards a new phone
Click to expand...
Click to collapse
Then i think it will be cheaper to buy a fresh new phone
Thank for your help anyway :good:

I fixed the problem 1 week after your reply, i could post solution if someone needs.

Killnolife said:
I fixed the problem 1 week after your reply, i could post solution if someone needs.
Click to expand...
Click to collapse
How you fix ?? i need so much !!! Please Help me ...

thiefxhunter said:
How you fix ?? i need so much !!! Please Help me ...
Click to expand...
Click to collapse
I took an hex editor and started the phone in download mode,
i took totoro.pit and added cal.bin under 'cal' partition name, and flashed custom pit.
(restarted and made a custom odin package with this cal.bin).
then i sent my latest cal backup (call this EFS Backup) and sent to device my cal.bin inside TAR file.
Then the phone restarted without problems.
Do you have an EFS (in fact cal) backup of your phone?
It's the bml15 block of your device. :good:

Killnolife said:
I took an hex editor and started the phone in download mode,
i took totoro.pit and added cal.bin under 'cal' partition name, and flashed custom pit.
(restarted and made a custom odin package with this cal.bin).
then i sent my latest cal backup (call this EFS Backup) and sent to device my cal.bin inside TAR file.
Then the phone restarted without problems.
Do you have an EFS (in fact cal) backup of your phone?
It's the bml15 block of your device. :good:
Click to expand...
Click to collapse
Can you upload the file?, this red screen of death is a common issue in the samsung galaxy young. thanks

Invalid Imei, Locked Bootloader, no EDL. Can anyone help?

Hi Guys.
This is a Mediatek Helio X25 Redmi Pro and it came to me bricked from its owner who tried to root it the wrong way. I managed to flash an official rom and bring it back to life but as apparently is the case with these phones, the nvram has been corrupted/rewritten and there's no Imei numbers on the phone, which means no calls and stuff. WiFi works fine. I've already had permission to unlock the bootloader but obviously I can't do anything about it since the software won't ID the device. I believe I might be able to flash a backup of nvram.bin, but I don't have one from this phone, which is why I am posting this here, hoping that maybe one of you can help me by sending me a copy of his own Redmi Pro nvram.bin file. Of course I only need it to get the thing back in the system, after which I can unlock it and use the original Imei numbers. Or if someone has another suggestion, I would greatly appreciate it.
Thanks in advance.

Search for SN writer. Then follow the steps from en.miui.com/thread-198017-1-1.html
Of course you have to have the original imei stickers for the numbers. Entering random numbers is illegal AFAIK.
This will fix your IMEI.

Binnylaw said:
Search for SN writer. Then follow the steps from en.miui.com/thread-198017-1-1.html
Of course you have to have the original imei stickers for the numbers. Entering random numbers is illegal AFAIK.
This will fix your IMEI.
Click to expand...
Click to collapse
Thanks for the reply, friend. I have tried that, as well as almost every other solution provided on the internet apart from the deepflash cable, but I keep getting error messages. And yes, I do have the original Imei numbers and it's those that I'm trying to restore. It just seems that something has gone really wrong in the boot partition and it won't let me do anything there. I'm out of ideas. The phone works fine, except for sim service; I am able to flash roms, but not fully. There's always 3 files that won't be downloaded to the phone using SP Flash Tool. I cannot use MiFlash because the phone won't boot on EDL mode. Any other suggestions you might have, I appreciate them.
Cheers

nsterjo said:
Thanks for the reply, friend. I have tried that, as well as almost every other solution provided on the internet apart from the deepflash cable, but I keep getting error messages. And yes, I do have the original Imei numbers and it's those that I'm trying to restore. It just seems that something has gone really wrong in the boot partition and it won't let me do anything there. I'm out of ideas. The phone works fine, except for sim service; I am able to flash roms, but not fully. There's always 3 files that won't be downloaded to the phone using SP Flash Tool. I cannot use MiFlash because the phone won't boot on EDL mode. Any other suggestions you might have, I appreciate them.
Cheers
Click to expand...
Click to collapse
Tried this method?
http://en.miui.com/thread-411112-1-1.html
Sent from my Redmi Note 4 using Tapatalk

If your phone is booting, I am pretty sure your snwriter version is wrong. Please use this exact version and let us know.
snwritetool.com/download/sn-write-tool-v1-1648

Binnylaw said:
If your phone is booting, I am pretty sure your snwriter version is wrong. Please use this exact version and let us know.
snwritetool.com/download/sn-write-tool-v1-1648
Click to expand...
Click to collapse
I have tried maybe 3 different versions of Sp Flashtool, including this one. I usually get a timeout message. But I will try again. Is there any specifics I should observe regarding the mdb files I need to use? I have tried all the ones that come with the roms I've tried, but without luck.

MaYbe I misunderstood.. You said ur phone is booting fine... and u are on an official ROM. If that is so, you should not use SP FLash to fix IMEI.
SN writer is needed to fix IMEI.. MDDB_InfoCustomAppSrcP_MT6797_S00_MOLY_LR11_W1603_MD_MP_V13_18_P69_1_ulwctg_n.EDB is the MDb file for developer ROM 7.3.6 and APDB_MT6797_S01_alps-mp-m0.mp9_W17.09 is the APDB...
Click on Dual IMEI and enter the two IMEIs.. Switch off the phone before connecting to the USb cable... Make sure you use the original Mi black cable. Now connect the phone without pressing ANY button at all.
That should do the job!

Binnylaw said:
MaYbe I misunderstood.. You said ur phone is booting fine... and u are on an official ROM. If that is so, you should not use SP FLash to fix IMEI.
SN writer is needed to fix IMEI.. MDDB_InfoCustomAppSrcP_MT6797_S00_MOLY_LR11_W1603_MD_MP_V13_18_P69_1_ulwctg_n.EDB is the MDb file for developer ROM 7.3.6 and APDB_MT6797_S01_alps-mp-m0.mp9_W17.09 is the APDB...
Click on Dual IMEI and enter the two IMEIs.. Switch off the phone before connecting to the USb cable... Make sure you use the original Mi black cable. Now connect the phone without pressing ANY button at all.
That should do the job!
Click to expand...
Click to collapse
No, you understood fine; it was me who typed SP Flashtool instead of SN Writer, which was what I meant. Everything else is as I wrote. I have tried 3 different versions of SN Writer, I connect fine and it starts the procedure following the same instructions you mentioned, but it stops half way, giving me an error message. I have tried different combinations of MDB and APDB files from several different ROMs I've downloaded, but they all fail. I'm not very familiar with these things but I can follow instructions and am quick to learn. Still, I have no idea why SN Writer or Maui Meta are not working. I tried to download an nvram.bin file I got from the internet with SP Flashtool, but it would not accept it as it was for Helio X20 I believe, which is why I was hoping someone would make available a copy of nvram.bin for this particular phone. I will also try to make a deepflash cable, hoping that might get me into EDL after which I can use MiFlash to reflash a new official Rom, but I don't know if it will work.

help please
Binnylaw said:
MaYbe I misunderstood.. You said ur phone is booting fine... and u are on an official ROM. If that is so, you should not use SP FLash to fix IMEI.
SN writer is needed to fix IMEI.. MDDB_InfoCustomAppSrcP_MT6797_S00_MOLY_LR11_W1603_MD_MP_V13_18_P69_1_ulwctg_n.EDB is the MDb file for developer ROM 7.3.6 and APDB_MT6797_S01_alps-mp-m0.mp9_W17.09 is the APDB...
Click on Dual IMEI and enter the two IMEIs.. Switch off the phone before connecting to the USb cable... Make sure you use the original Mi black cable. Now connect the phone without pressing ANY button at all.
That should do the job!
Click to expand...
Click to collapse
Hi there, please can you tell me where I find the files (mdb and adb)? Are they somewhere on the phone's firmware? Or somewhere in the rom i flashed?
I'm a beginner having a very similar issue having flashed a rom in rescuing a bricked phone and now have invalid IMEI numbers.
Thanks so much

No IMEI and Unknown baseband !

Hi Guys, 6 months ago I lost my IMEI. I don't know what happened but I tried everything nothing helps me. There is only one hope. I need someone's QCN backup file. if I get a QCN file I can restore it to my phone and I will change the IMEI number
Thank you.

How to share qcn file??

06swax said:
How to share qcn file??
Click to expand...
Click to collapse
Zip the file. In the additional option click manage attachment and upload it. Thank you

Anyone please help me!!!

Please use Qualcomm flash tool..
nesan95 said:
Anyone please help me!!!
Click to expand...
Click to collapse
Please use Qualcomm read and write imei tool...it will repair your imei..

Aditya kukreti said:
Please use Qualcomm read and write imei tool...it will repair your imei..
Click to expand...
Click to collapse
What is Qualcomm read and write imei tool? Can you provide download link?

Read and write imei tool..
nesan95 said:
What is Qualcomm read and write imei tool? Can you provide download link?
Click to expand...
Click to collapse
Download link of read and write imei tool...https://androidmtk.com/download-readwrite-tool

Aditya kukreti said:
Download link of read and write imei tool...https://androidmtk.com/download-readwrite-tool
Click to expand...
Click to collapse
Not working. when I press read button I got connection fail error.

Please read the instructions given there
nesan95 said:
Not working. when I press read button I got connection fail error.
Click to expand...
Click to collapse
Please download the drivers of your device and install it and then connect it to the pc..and read the following instructions given their..mine imei was also corrupted couple of years ago..I was not able to make calls or use the internet connection..I found this tool and it repaired my imei..please make sure u flash ur original imei which is given in the box..

Aditya kukreti said:
Please download the drivers of your device and install it and then connect it to the pc..and read the following instructions given their..mine imei was also corrupted couple of years ago..I was not able to make calls or use the internet connection..I found this tool and it repaired my imei..please make sure u flash ur original imei which is given in the box..
Click to expand...
Click to collapse
I already installed the driver but as you said I downloaded the driver again and install it. My port is COM5 so I changed it to COM5 Still failed to read/write But I could able to connect QPST and restore the qcn successfully.
Did you face unknown baseband ??

No I didn't face unknown baseband
nesan95 said:
I already installed the driver but as you said I downloaded the driver again and install it. My port is COM5 so I changed it to COM5 Still failed to read/write But I could able to connect QPST and restore the qcn successfully.
Did you face unknown baseband ??
Click to expand...
Click to collapse
I face only null imei..but I faced the issue on another device not on nexus 6p..