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[Q] Samsung Galaxy S Advance I9070 have no signal after flashing

noob here
Help me guys I have flashed my samsung s advance with android 4.1.2 jelly bean. The process seem okay and everything was done according to the instruction but after I've entered my sim card there is no network connection. It does recognise that I have a sim in the device but it have no signal. I have tried factory reset and cleaning the user data and chache but still no result.
Help me guys :crying::crying:

Orion_the_cat said:
noob here
Help me guys I have flashed my samsung s advance with android 4.1.2 jelly bean. The process seem okay and everything was done according to the instruction but after I've entered my sim card there is no network connection. It does recognise that I have a sim in the device but it have no signal. I have tried factory reset and cleaning the user data and chache but still no result.
Help me guys :crying::crying:
Click to expand...
Click to collapse
Who is your service through? Maybe that you have to contact your service provider and have them re-activate the phone.

Orion_the_cat said:
noob here
Help me guys I have flashed my samsung s advance with android 4.1.2 jelly bean. The process seem okay and everything was done according to the instruction but after I've entered my sim card there is no network connection. It does recognise that I have a sim in the device but it have no signal. I have tried factory reset and cleaning the user data and chache but still no result.
Help me guys :crying::crying:
Click to expand...
Click to collapse
Possibly you've lost your IMEI, Check dialing *#06#.
You have an EFS backup?

abnxplosiv said:
Who is your service through? Maybe that you have to contact your service provider and have them re-activate the phone.
Click to expand...
Click to collapse
I've already tried but still can't get the signal hurmm

ZonaRMR said:
Possibly you've lost your IMEI, Check dialing *#06#.
You have an EFS backup?
Click to expand...
Click to collapse
This is the result of dialing that no.
what's EFS backup ? sorry I'm new to this

Orion_the_cat said:
This is the result of dialing that no.
what's EFS backup ? sorry I'm new to this
Click to expand...
Click to collapse
EFS/IMEI is the "identity" of your phone and each phone has one imei.. if you lost it by flashing your phone you can only use your phone without network.. please make sure that you make an efs backup in the future.. but how it looks you have not lost your imei

Musti14 said:
EFS/IMEI is the "identity" of your phone and each phone has one imei.. if you lost it by flashing your phone you can only use your phone without network.. please make sure that you make an efs backup in the future.. but how it looks you have not lost your imei
Click to expand...
Click to collapse
Okay then, what should I do ?

Orion_the_cat said:
Okay then, what should I do ?
Click to expand...
Click to collapse
You must have an IMEI Sticker on the back of your phone, look if both IMEIs are similar

Need to contact your service provider

MI4C IMEI/Baseband unknown

Hi guys!
Yesterday my firmware update went terribly wrong and now I have a device that states that imei and baseband are unknown, so I my both sim-cards don't work.
I've tried several types of IMEI restoration, but none of them worked.
Unfortunately I don't have any backup for nvram. So, my guess is that there is a problem with EFS partition on the phone.
In QPST NV RF Manager I see my real IMEI from the box, so I guess it is still present, but my baseband doesn't work. Can you please suggest any help on recovering the baseband? Or if it is possible share with me modem backup or nvram backup without IMEI (I've seen on this forum that one guy with Samsung S3 had a kind of the same problem and he was given a working nvram backup without IMEI (IMEI was 0/00)) I can write my IMEI then, if baseband works again. Will appreciate any help.

Send it back. Only the oem is legally able to mess with the IMEI.

zelendel said:
Send it back. Only the oem is legally able to mess with the IMEI.
Click to expand...
Click to collapse
Well... I have managed to make it work again and my original IMEI is back. The only thing I had to do is to restore a working NVRAM backup (from another device) via QPST. So, it wasn't that hard. Much simpler than sending it back to China.

landslider said:
Well... I have managed to make it work again and my original IMEI is back. The only thing I had to do is to restore a working NVRAM backup (from another device) via QPST. So, it wasn't that hard. Much simpler than sending it back to China.
Click to expand...
Click to collapse
If you restored the file from another device then it won't have the right IMEI.

zelendel said:
If you restored the file from another device then it won't have the right IMEI.
Click to expand...
Click to collapse
It HAS right IMEI, I checked it with the original box. No need to put up an argument about it. Both devices (mine and the one which was backupped and restored from) are working fine, bot have ORIGINAL IMEI numbers and no errors considering networks or MI accounts. So, actually I have no idea what you are trying to tell me.

landslider said:
It HAS right IMEI, I checked it with the original box. No need to put up an argument about it. Both devices (mine and the one which was backupped and restored from) are working fine, bot have ORIGINAL IMEI numbers and no errors considering networks or MI accounts. So, actually I have no idea what you are trying to tell me.
Click to expand...
Click to collapse
I'm not making an argument. I'm trying to figure out how a number which is supposed to be hard coded into the file is then restored by restoring the files from a different device.
As these devices are not sold in the states learning as much as possible is a good thing.
Glad you got it working.

zelendel said:
I'm not making an argument. I'm trying to figure out how a number which is supposed to be hard coded into the file is then restored by restoring the files from a different device.
As these devices are not sold in the states learning as much as possible is a good thing.
Glad you got it working.
Click to expand...
Click to collapse
Okay, sorry. I will try to make it a bit clearer=) This device is not sold in Russia either (officially at least), so the only way to get it is to buy from aliexpress or ebay or anything else. In that case the buyer doesn't get any guarantee or official support. So if the device is broken and can't be restored it turns into a garbage. I believe that in the US the situation with that kind of devices is almost the same.
Now, if You are not familiar with QPST it is a software package for qualcomm based devices which can make backup/restore of some non-firmware software from the device (like IMEI, ESN, Baseband, LTE Channels etc). As for IMEI number, basically, as You've said it is hard coded into device so it is pretty hard to get it changed or fully deleted. Here we come to my case of unknown Baseband and IMEI. Though via phone settings I could see: "Unknown", my IMEI didn't change and was stored in the device. The "error" or smth like that happened after the factory reset and my guess is that the file structure of NVRAM was changed. So, backup of NVRAM taken from the working device didn't actually have IMEI or ESN in it, but it has the right file structure without any errors. That is what happened, the file structure was restored without changing any factory numbers.
If you have any questions, feel free to ask

landslider said:
Okay, sorry. I will try to make it a bit clearer=) This device is not sold in Russia either (officially at least), so the only way to get it is to buy from aliexpress or ebay or anything else. In that case the buyer doesn't get any guarantee or official support. So if the device is broken and can't be restored it turns into a garbage. I believe that in the US the situation with that kind of devices is almost the same.
Now, if You are not familiar with QPST it is a software package for qualcomm based devices which can make backup/restore of some non-firmware software from the device (like IMEI, ESN, Baseband, LTE Channels etc). As for IMEI number, basically, as You've said it is hard coded into device so it is pretty hard to get it changed or fully deleted. Here we come to my case of unknown Baseband and IMEI. Though via phone settings I could see: "Unknown", my IMEI didn't change and was stored in the device. The "error" or smth like that happened after the factory reset and my guess is that the file structure of NVRAM was changed. So, backup of NVRAM taken from the working device didn't actually have IMEI or ESN in it, but it has the right file structure without any errors. That is what happened, the file structure was restored without changing any factory numbers.
If you have any questions, feel free to ask
Click to expand...
Click to collapse
It is almost the same with a few exceptions. One being that their devices are banned from all people that work for the government, sometimes they get stopped at customs due to copyright issues and with the latest news about them coming loaded with malware, most won't buy them.
That makes sense in a way. Not sure why a factory reset would mess up that part of the device as it shouldn't touch it.
Thanks for the info.

zelendel said:
Not sure why a factory reset would mess up that part of the device as it shouldn't touch it.
Click to expand...
Click to collapse
I don't know either, but it was an unforgettable experience and a lesson to do backups of everything.

Hi @landslider, what's up friend? I have the same problem but I have no backup hidden partitions. Could you help me fix my device?

harolete said:
Hi @landslider, what's up friend? I have the same problem but I have no backup hidden partitions. Could you help me fix my device?
Click to expand...
Click to collapse
Hi! Have you tried flashing China developer rom with Miflash?
Second option: Connect to your PC and run QPST according to one of the manuals (in order for your phone to show up as a COM), run RF NV Manager and look up your line 550 NV_IMEI if it is filled with numbers that are the same as on your box (check HEX above them and numbers should resemble yours from box but written in opposite direction, eg: on the box it is XXXX69XXXXX in the QPST it will be 96). So, if your IMEI is at its place than all you need is a working device from someone to make a backup. Backup must be made in newer versions of QPST in *.xqcn format and than restored to your phone with checked box "allow ESN mismatch"

landslider said:
Well... I have managed to make it work again and my original IMEI is back. The only thing I had to do is to restore a working NVRAM backup (from another device) via QPST. So, it wasn't that hard. Much simpler than sending it back to China.
Click to expand...
Click to collapse
Could you teach me how to do that? how can i make nvram backup via other mi4c? and how can i put it into my mi4c ?? as i am not good at computer so i need your detailed explanation. I would be very glad if you help me.....

landslider said:
Okay, sorry. I will try to make it a bit clearer=) This device is not sold in Russia either (officially at least), so the only way to get it is to buy from aliexpress or ebay or anything else. In that case the buyer doesn't get any guarantee or official support. So if the device is broken and can't be restored it turns into a garbage. I believe that in the US the situation with that kind of devices is almost the same.
Now, if You are not familiar with QPST it is a software package for qualcomm based devices which can make backup/restore of some non-firmware software from the device (like IMEI, ESN, Baseband, LTE Channels etc). As for IMEI number, basically, as You've said it is hard coded into device so it is pretty hard to get it changed or fully deleted. Here we come to my case of unknown Baseband and IMEI. Though via phone settings I could see: "Unknown", my IMEI didn't change and was stored in the device. The "error" or smth like that happened after the factory reset and my guess is that the file structure of NVRAM was changed. So, backup of NVRAM taken from the working device didn't actually have IMEI or ESN in it, but it has the right file structure without any errors. That is what happened, the file structure was restored without changing any factory numbers.
If you have any questions, feel free to ask
Click to expand...
Click to collapse
so can you please upload that xqcn file from the working device ? i have the same issue and i can't find a working mi4c inn my area !

spybit2008 said:
so can you please upload that xqcn file from the working device ? i have the same issue and i can't find a working mi4c inn my area !
Click to expand...
Click to collapse
Hi! Unfortunately no, I can't. I don't have xiaomi mi4c anymore

spybit2008 said:
so can you please upload that xqcn file from the working device ? i have the same issue and i can't find a working mi4c inn my area !
Click to expand...
Click to collapse
http:/ en.miui.com thread-315233-1-1.html (replace whitespaces with slash)
There is a thread in official forum where one guy shares qcn backup. There is also an instruction to restore IMEI and baseband. But It doesn't help for me. Network still unavailable.

MEID, IMEI1 & IMEI2. Got lost, Can i Back it?

Hello all,
My problem is i make flash for my device ( DOOGEE S60 ), and after flashing my ROM, i deal this *#06* and the output is:
IMEI1:1111111111111111
IMEI2:2222222222
MEID:000000000
Click to expand...
Click to collapse
So guys there is any way to restore it? or any luck to writes my IMEI from my old phone?

Nvram formated
I have the same problem because I deleted the NVRAM and unfortunately I did not make a backup. then I try to fix the problem using Miracle box by untroducing imei 1 and 2. the network has been restored but there is always a conflict from time to time the network disappears. 4G does not work and when I use 3G the SIM 2 loses the network, the MEID and always 0000 ....

Obada8 said:
Hello all,
My problem is i make flash for my device ( DOOGEE S60 ), and after flashing my ROM, i deal this *#06* and the output is:
So guys there is any way to restore it? or any luck to writes my IMEI from my old phone?
Click to expand...
Click to collapse
If you have rooted your phone, GhostPhone app is working perfect and keeps all numbers without need to restore them manually on every update or changed mobile network settings(the last oftendeletes IMEI on many MTK 6xxx phones). If no root access - use MauiMeta to flash them from PC, it is not hard for use from unexpirienced people.

Has anyone found a way to restore lost IMEIs?

I had the misfortune of bricking my OP8 a while back and ended up having to use SMT mode on MSMDownloadTools. As we all know, this will cause you to lose your IMEI numbers. They return a value of 0. Has anyone come up with a solution to restore the IMEI numbers without having to mail their phone in for repair?

U fixed?same issue

i changed my IMEI using miracle box .. now my phone cant connect to any network .. i am trying to restore my IMEI but it s not possible .. anyone :'(

hadid90 said:
i changed my IMEI using miracle box .. now my phone cant connect to any network .. i am trying to restore my IMEI but it s not possible .. anyone :'(
Click to expand...
Click to collapse
again write back same imei with merical

Mr Hassan said:
again write back same imei with merical
Click to expand...
Click to collapse
It s not working :'(

hadid90 said:
It s not working :'(
Click to expand...
Click to collapse
Again, this is why you don't illegally change your IMEI. Now you're likely stuck with a dead brick of a phone because you can't switch back the IMEI either.

Xryphon said:
Again, this is why you don't illegally change your IMEI. Now you're likely stuck with a dead brick of a phone because you can't switch back the IMEI either.
Click to expand...
Click to collapse
but other people successfully changed it dude ..

hadid90 said:
but other people successfully changed it dude ..
Click to expand...
Click to collapse
Imei changing not allowed here

can someone share his op8 QCN here please ? i am trying to get back my original IMEI .. i want to repair it

Question NO İMEİ AND NO WİFİ PLSS HELP

I was trying to repair my imei and I deleted efs . when I try to repair my qcn , it says succesful but there is no imei and wifi. PLS HELP ME

boy2121 said:
I was trying to repair my imei and I deleted efs . when I try to repair my qcn , it says succesful but there is no imei and wifi. PLS HELP ME
Click to expand...
Click to collapse
Try flash fastboot rom

bienvanhoang said:
Try flash fastboot rom
Click to expand...
Click to collapse
I tried still same

The easiest way is Xiaomi customer service.
First check if your Xiaomi customer service has warrant coverage after bootloader unlock. (Some country does, some does not.) [ie. warrant the physical device; rom state or bootloader doesn't matter]

boy2121 said:
I was trying to repair my imei and I deleted efs . when I try to repair my qcn , it says succesful but there is no imei and wifi. PLS HELP ME
Click to expand...
Click to collapse
you wont be able to restore qcn even if you have unmodified qcn. newest 2021 xiaomi devices got RSA on both sim1 and sim2 modems. qfil will write it but after reboot it will be back to stock so you need your EFS.

gsser said:
you wont be able to restore qcn even if you have unmodified qcn. newest 2021 xiaomi devices got RSA on both sim1 and sim2 modems. qfil will write it but after reboot it will be back to stock so you need your EFS.
Click to expand...
Click to collapse
I have my qcn backup cant I do something with that?

gsser said:
you wont be able to restore qcn even if you have unmodified qcn. newest 2021 xiaomi devices got RSA on both sim1 and sim2 modems. qfil will write it but after reboot it will be back to stock so you need your EFS.
Click to expand...
Click to collapse
sorry if n00b question: so is a EFS backup crucial for IMEI restore?

gsser said:
you wont be able to restore qcn even if you have unmodified qcn. newest 2021 xiaomi devices got RSA on both sim1 and sim2 modems. qfil will write it but after reboot it will be back to stock so you need your EFS.
Click to expand...
Click to collapse
what if I restore someon elses efs backup?

ChriMo said:
sorry if n00b question: so is a EFS backup crucial for IMEI restore?
Click to expand...
Click to collapse
qcn contains efs. efs contains carrier stuff + imei stuff.
basically you cant overwrite a qcn but dont know about efs.

boy2121 said:
what if I restore someon elses efs backup?
Click to expand...
Click to collapse
might work but you need to find someone who is willingly wanting to give you his/her efs...

pl1992aw said:
The easiest way is Xiaomi customer service.
First check if your Xiaomi customer service has warrant coverage after bootloader unlock. (Some country does, some does not.) [ie. warrant the physical device; rom state or bootloader doesn't matter]
Click to expand...
Click to collapse
No one customer service provides free of charge repair if you loss IMEI.

bartito said:
No one customer service provides free of charge repair if you loss IMEI.
Click to expand...
Click to collapse
Yeah did told them to check, but didn't say it will be free of charge. But Xiaomi definitely will repair it or change one for you.
Even if you find someone on the net, many will charge you some dollars. And you don't even know if they actually can fix it or just a scam.
Unless there's some way to bypass, or an exploit to make EDL work, for general user, Xiaomi customer service is better and safer.

boy2121 said:
I was trying to repair my imei and I deleted efs . when I try to repair my qcn , it says succesful but there is no imei and wifi. PLS HELP ME
Click to expand...
Click to collapse
I did the same mistake unfortunately. Did you find any solution?

johnkabou said:
I did the same mistake unfortunately. Did you find any solution?
Click to expand...
Click to collapse
need to reflash imei and rewrite it
CHEERS

Download - SN Write Tool
snwritetool.com
you can try this tool.. I used it long ago helped me then.
Cheers