EFS Recovery Guide [Snapdragon only]

[Naufalhafiyyan]

My redmi note 3 pro has unknown imei on sim 1 and 00 on sim 2. But baseband is safe. What I need to do to bring my imei back? Just rewrite the imei or flash efs also? Cause in the op just said if "00" imei not unknown imei. My mobile data and signal still work eventhough my imei gone fyi

 

[Archit9169]

My redmi note 3 pro has unknown imei on sim 1 and 00 on sim 2. But baseband is safe. What I need to do to bring my imei back? Just rewrite the imei or flash efs also? Cause in the op just said if "00" imei not unknown imei. My mobile data and signal still work eventhough my imei gone fyi

If even after no imei everything is working fine, then dont do anything.
Now if there is anyother problem other than blank imei, i suggest first take a backup of efs partition.
Then write imei, you get get yours at the back of your box or in the bill, using the imei tool i provided.
Now check whether everything worls fine or not.

 

[-MB-]

Should this also work on a redmi note 4 MIDO(ie snapdragon version)?
Tried it at the very least and I get a fail about com port, eventho it does show as the right device, Qualcomm HS-USB Diagnostics.
Ofc being a note 4 it says Qualcomm HS-USB Diagnostics 9091 instead of 901D

 

[Archit9169]

Should this also work on a redmi note 4 MIDO(ie snapdragon version)?
Tried it at the very least and I get a fail about com port, eventho it does show as the right device, Qualcomm HS-USB Diagnostics.
Ofc being a note 4 it says Qualcomm HS-USB Diagnostics 9091 instead of 901D

Tinker with the com port and enable diag mode using the commands that i gave. It supports all qcom devices as far as i know.

 

[-MB-]

Tinker with the com port and enable diag mode using the commands that i gave. It supports all qcom devices as far as i know.

Diag mode is on. QPST and the emmc tool i used to dump the xqcn file all work with it. It is just the imei flasher refusing.

 

[Archit9169]

Diag mode is on. QPST and the emmc tool i used to dump the xqcn file all work with it. It is just the imei flasher refusing.

Hmm. It may be some other problem. Sorry but i dont know any alternative for imei changind. You can do that with emmcdl utility, which works on edl mode. But you will have to built it from source, since the person who was working on it abandoned the project. I dont know how to compile it or i might have provided some assistance.

 

[-MB-]

Hmm. It may be some other problem. Sorry but i dont know any alternative for imei changind. You can do that with emmcdl utility, which works on edl mode. But you will have to built it from source, since the person who was working on it abandoned the project. I dont know how to compile it or i might have provided some assistance.

It is part of thr QPST package, which I got from another guide, that has u hexediting a XQCN file u can also dump from that tool, but need one from same specific model that does have a functionig IMEI, so that u can edit that one with the ones from your device, then use that tool to write it back.
My problem with that is, there is no xqcn posted yet from my specific model, and I cannot edit my own file, it has no imei thus all 00s, which u cannot look up to find the adress to edit.

 

[Archit9169]

It is part of thr QPST package, which I got from another guide, that has u hexediting a XQCN file u can also dump from that tool, but need one from same specific model that does have a functionig IMEI, so that u can edit that one with the ones from your device, then use that tool to write it back.
My problem with that is, there is no xqcn posted yet from my specific model, and I cannot edit my own file, it has no imei thus all 00s, which u cannot look up to find the adress to edit.

So you only need to change your imei. Have you tried searching for xposed, it may not do it at partition level, but it can change your imei while you are on a specific rom. Try searching for imei modules in xposed.

 

[-MB-]

Th IMEi changing needs to be done with the phone in android itself right?

So you only need to change your imei. Have you tried searching for xposed, it may not do it at partition level, but it can change your imei while you are on a specific rom. Try searching for imei modules in xposed.

Rather have the proper fix tbqh.

I used the dialer code to enter diag mode btw. Used the adb version, and it now shows up exactly as in your pictures: ie. 901D
Now when I flash it freezes for a bit and then says failed.

 

[Archit9169]

Th IMEi changing needs to be done with the phone in android itself right?



Rather have the proper fix tbqh.

I used the dialer code to enter diag mode btw. Used the adb version, and it now shows up exactly as in your pictures: ie. 901D
Now when I flash it freezes for a bit and then says failed.

Keep trying. I know its not perfet but its the easiest and safest way to get everything in order.

 

[-MB-]

Keep trying. I know its not perfet but its the easiest and safest way to get everything in order.

Tried a couple of other writing tools, and they did succeed, only apparently they do not detect the first SIM/modem, and subsequently write the first IMEi to the 2nd sim/modem and fail with the other. Maybe 1 of the 2 is broken?

2nd slot has IMEI correct, but for some reason IMEI SV shows unknown, first slot has no IMEI but a value of 00 for SV.

 

[-MB-]

Finally fixed it, using a qcn file from the creator of this thread.
Found his original thread on MIUI forums where he posted the qcn, edited in my own IMEIS and flashed it with QPST.
Now I have mobile connection on both sims again.

 

[canmrtcan]

Hello there!
* Do you have xiaomi redmi 5 plus efs backup?

 

[Anindo]

Do this if and only if you believe your EFS is corrupted, or you somehow erased it. If you are not sure about it, then simply follow the next guide to change you IMEI number. In most cases people loose their IMEI only and not the whole partition. Again, it may or may not work, so do this on your risk, and i am not to blame if anything bad happens, but if you do succeed, then don't forget to give me credit.


2. Extract the Dump Backup files and flash them using the following commands.

fastboot flash modemst1 modemst1
fastboot flash modemst2 modemst2

3. Now reboot and voila you have you a new EFS partition at your disposal.

I tried this on my redmi note 3 pro kenzo, but cmd says failed. It says
remote partition flashing is not allowed

now what??

 

[Archit9169]

I tried this on my redmi note 3 pro kenzo, but cmd says failed. It says
remote partition flashing is not allowed

now what??

Unlock your bootloader first. And do consult someone to know what you are actually doing. Also read the op properly.

 

[Archit9169]

Hello there!
* Do you have xiaomi redmi 5 plus efs backup?

I dont own redmi 5 plus ask in that forum.

 

[Archit9169]

Tried a couple of other writing tools, and they did succeed, only apparently they do not detect the first SIM/modem, and subsequently write the first IMEi to the 2nd sim/modem and fail with the other. Maybe 1 of the 2 is broken?

2nd slot has IMEI correct, but for some reason IMEI SV shows unknown, first slot has no IMEI but a value of 00 for SV.

Maybe. Or you can try some other methods to solve this. Like modding a qcn file and then directly flashing it via nvtools of qcon.

 

[Anindo]

I tried this on my redmi note 3 pro kenzo, but cmd says failed. It says
remote partition flashing is not allowed

now what??

Edit: problem solved. Tried installing multiple qcn files, one worked.

I had lost my Imei numbers.It showed no baseband version,no imei,no Bluetooth address. As a result sims don't connect. But memory card slot works. I've checked that the sim connector pins are okay.

In Short:
∆ What I have:
1. Twrp installed
2.Root
3. It wasn't unlocked officially because when I applied for unlocking, I was able to download the unlock tool but as I didn't have imei,so I couldn't add my device for unlocking ( developer options>unlock status> add device)
But when I got the imei back, I was able to add the device. Still I haven't unlocked it yet. So it shows only the MI logo while booting but not unlocked written below.

4. Currently I'm on MIUI 9.5.6.0 Global Stable rom. Android version 6.0.1 marshmallow.


What I tried to fix it:
1.
I tried flashing Stock roms, Miui 9.5, Miui 9.4, Custom roms but still didn't get the imei number.

2.
Tried Fixing the EFS through adb, didn't work.
Tried efs through fastboot mode, it said installing through fastboot is not allowed or something like that ( I don't remember exactly word by word,but it was something like that)

3.
Then at last I was able to write down my imei numbers Through QPST tool, thanks to a guide in mi community. ♡

I was only able to write 1 imei number as I have 1 imei number written in the sticker inside the phone. But I got Both imei numbers back but it shows unknown in ICCID unkown and others are unkown too. A screenshot is given below.

After getting my imei back, I inserted the sim,both slots show sim but there is no signal. When I try to call, there shows Radio off. And it tells me to turn off airplane mode but it was never turned on in the first place.

4.I flashed a backup of my current rom through twrp yesterday, tried to turn on radio through testing mode( *#*#4636#*#*) but didn't work. I couldn't change my radio mode to GSM , CDMA, LTE or anything else.. And the turn on radio button was grayed out.

Stuff that I haven't tried yet:

1. Flashing stock Miui 9.5.6 (not my twrp backup) through PC.

2. Installing NON-HLOS.bin file through fastboot mode.



Now what should I do to bring my phone back to life..?

 

[AccountSaver]

Do this if and only if you believe your EFS is corrupted, or you somehow erased it. If you are not sure about it, then simply follow the next guide to change you IMEI number. In most cases people loose their IMEI only and not the whole partition. Again, it may or may not work, so do this on your risk, and i am not to blame if anything bad happens, but if you do succeed, then don't forget to give me credit.

Note:

• If your EFS is erased or corrupted, your IMEI and Baseband will be shown as unknown. In this case recover the EFS following this post, and then change the IMEI following the next post. If your IMEI is shown as 0, then you EFS is safe and most probably your IMEI is gone. In that case, no need to recover EFS, only change the IMEI number following my next post.
• In TWRP, backup of kate wont show on kenzo and the backup up kenzo wont show on kate. In case no backup is shown even if you are using the right device, then try the dump flashing method or try changing the TWRP recovery.
• Flashing this will only restore your EFS partition, but the IMEI will still be gone, so you will have to follow the next guide to change your IMEI.
• Even after flashing a new EFS, you Mac and BT address will not recovery. The android system will assign a software generated address to both devices. Dont worry cause even without the EFS partition there will be a Mac and BT address assigned to your device and both the things will work normally.
• If your Baseband is still unknown, even after flashing a new EFS, then try flashing latest radio file. It can be found in any firmware update package, either the official or the one from the strix.

1. Download the required files from the link given below.

• EFS Backup[Kenzo]
• EFS Backup[Kate]

2. Extract the Dump Backup files and flash them using the following commands.

fastboot flash modemst1 modemst1
fastboot flash modemst2 modemst2

3. Now reboot and voila you have you a new EFS partition at your disposal.

Hello,

I have lost the MAC Address only in KATE.Will this do ? (My IMEI is still there only wifi is dead.Already tried different roms & fastroom clean install etc)

 

[Archit9169]

Hello,

I have lost the MAC Address only in KATE.Will this do ? (My IMEI is still there only wifi is dead.Already tried different roms & fastroom clean install etc)

Try xposed module to change mac. If nothing then get the board change it may be hardware fault.