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i don't get any mobile connection

Hi guys,
my old N5 felt on the ground and breaked.
So i did a backup using TWRP and restored it to my new Nexus.
Unfortunately my new one can't get any mobile connection.
The IMEI seems to be missing :crying: (see screenshots)
Please advice.
Thanks in advance!!!

Looks like you restored a backup that included efs. EFS is unique to every handset and cannot be recovered without a backup. In short, you just ruined your phone
Sent from my Nexus 5 using Tapatalk

i know that there is a workaround for this issue for samsung phones when no efs-backup is availabel.
does anything like that exist for the nexus 5?

leAndroid91 said:
i know that there is a workaround for this issue for samsung phones when no efs-backup is availabel.
does anything like that exist for the nexus 5?
Click to expand...
Click to collapse
you can try flashing the factory img

simms22 said:
you can try flashing the factory img
Click to expand...
Click to collapse
so it's the same for nexus and samsung?
- flash stock
- wipe data/factory reset
- wipe cache
- reboot
- delete efs folder
- flash stock rom

There isn't an "efs folders" and you shouldn't delete anything. Just flash stock
Sent from my Nexus 5 using Tapatalk
---------- Post added at 08:43 PM ---------- Previous post was at 08:41 PM ----------
leAndroid91 said:
i know that there is a workaround for this issue for samsung phones when no efs-backup is availabel.
does anything like that exist for the nexus 5?
Click to expand...
Click to collapse
Actually that workaround depends on what actually happened to efs in the first place. It does not fix all efs issue, believe me
Sent from my Nexus 5 using Tapatalk

http://forum.xda-developers.com/showthread.php?t=2511512&page=715
Go to post #7148.
If all else fails, looks like you MAY get lucky if you Fastboot flash each image in a ROM zip manually.

pwrmedia said:
http://forum.xda-developers.com/showthread.php?t=2511512&page=715
Go to post #7148.
If all else fails, looks like you MAY get lucky if you Fastboot flash each image in a ROM zip manually.
Click to expand...
Click to collapse
flashing each image in fastboot didn't work
isn't there a way to restore the IMEI manually?
i guess it has to be stored somewhere on the device and i've it on the sticker.

leAndroid91 said:
flashing each image in fastboot didn't work
isn't there a way to restore the IMEI manually?
i guess it has to be stored somewhere on the device and i've it on the sticker.
Click to expand...
Click to collapse
As it's illegal in many countries to tamper with the imei, it cannot be discussed here. Send it to an lg service centre for repair
Sent from my Nexus 5 using Tapatalk

IMEI Unknown

Hi guys! I've looked all around and tried the fixes that people recommended, which is basically going back to stock.
So this is what happened to my brother's phone:
Was using the phone and all a sudden the phone freezes (He was on Android L) and he rebooted it. After rebooting, the phone went into bootloop. He downloaded some program that supposedly fixes softbrick and bootloop (by flashing stock ROM) Nexus Root Toolkit v1.8.7.
The phone was fixed.. Kinda.. He couldn't get any cell signal. Turns out his baseband and IMEI read unknown. He has the box the phone came in, to we know the physical IMEI number.
Is there a fix for this? I've tried this thread http://forum.xda-developers.com/google-nexus-5/help/lost-imei-please-help-t2529103 but it didn't work.
Any ideas?

You_got_owned123 said:
Hi guys! I've looked all around and tried the fixes that people recommended, which is basically going back to stock.
So this is what happened to my brother's phone:
Was using the phone and all a sudden the phone freezes (He was on Android L) and he rebooted it. After rebooting, the phone went into bootloop. He downloaded some program that supposedly fixes softbrick and bootloop (by flashing stock ROM) Nexus Root Toolkit v1.8.7.
The phone was fixed.. Kinda.. He couldn't get any cell signal. Turns out his baseband and IMEI read unknown. He has the box the phone came in, to we know the physical IMEI number.
Is there a fix for this? I've tried this thread http://forum.xda-developers.com/google-nexus-5/help/lost-imei-please-help-t2529103 but it didn't work.
Any ideas?
Click to expand...
Click to collapse
Try to run the "fastboot earease cache" command in fastboot. Read the sticky thread in the general forum.

bitdomo said:
Try to run the "fastboot earease cache" command in fastboot. Read the sticky thread in the general forum.
Click to expand...
Click to collapse
Sad to say, I've already tried that.. Even tried to flash stock cache image.

You_got_owned123 said:
Sad to say, I've already tried that.. Even tried to flash stock cache image.
Click to expand...
Click to collapse
Also you said the baseband is unknown. Have you tried to reflash the radio/modem image?

bitdomo said:
Also you said the baseband is unknown. Have you tried to reflash the radio/modem image?
Click to expand...
Click to collapse
I've flashed radio, but modem I have not. I'll have to try that!

You_got_owned123 said:
I've flashed radio, but modem I have not. I'll have to try that!
Click to expand...
Click to collapse
It's the same thing!
restore fully to stock using LG Flashtool. See if that fixes...

rootSU said:
It's the same thing!
restore fully to stock using LG Flashtool. See if that fixes...
Click to expand...
Click to collapse
Can you by any chance give me a link? Did a quick Google search and didn't find anything official.

You_got_owned123 said:
Can you by any chance give me a link? Did a quick Google search and didn't find anything official.
Click to expand...
Click to collapse
See my signature
Sent from my Nexus 5 using Tapatalk

You_got_owned123 said:
Can you by any chance give me a link? Did a quick Google search and didn't find anything official.
Click to expand...
Click to collapse
Or check my signature.
Someone calls it modem and someone calls it radio.

rootSU said:
See my signature
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Hey! I was reading on a thread where you helped someone fix their phone!
Did a stock flash do it for them? I got the factory images and ran the flash-all scrip and still nothing.

You_got_owned123 said:
Hey! I was reading on a thread where you helped someone fix their phone!
Did a stock flash do it for them? I got the factory images and ran the flash-all scrip and still nothing.
Click to expand...
Click to collapse
I help a lot of people. I cannot pick out individual instances.
Use LG flashtool
Sent from my Nexus 5 using Tapatalk

You_got_owned123 said:
Hey! I was reading on a thread where you helped someone fix their phone!
Did a stock flash do it for them? I got the factory images and ran the flash-all scrip and still nothing.
Click to expand...
Click to collapse
Also check if wifi mac address is changing after each reboot. Corrupted persist partition can cause problems like that and also other things like crasing apps
Check out my thread about it http://forum.xda-developers.com/google-nexus-5/general/guide-to-fix-persist-partition-t2821576. It worths a try. If it does not help then you have to buy a new motherboard or claim your warranty if you have any.

bitdomo said:
Also check if wifi mac address is changing after each reboot. Corrupted persist partition can cause problems like that and also other things like crasing apps
Check out my thread about it http://forum.xda-developers.com/google-nexus-5/general/guide-to-fix-persist-partition-t2821576. It worths a try. If it does not help then you have to buy a new motherboard or claim your warranty if you have any.
Click to expand...
Click to collapse
Perist will not mount. I hasn't seen factory image for persist partition.

You_got_owned123 said:
Perist will not mount. I hasn't seen factory image for persist partition.
Click to expand...
Click to collapse
Because there arent any. It is unique for every device like efs.

bitdomo said:
Because there arent any. It is unique for every device like efs.
Click to expand...
Click to collapse
So is that a problem?

You_got_owned123 said:
So is that a problem?
Click to expand...
Click to collapse
If you see that /persist cannot be mounted then it could be.

bitdomo said:
If you see that /persist cannot be mounted then it could be.
Click to expand...
Click to collapse
I tried wiping cache and then it gave me a bunch or partitions that were errors. With persist being one of them. After a while, I was able to clear cache with no errors.

You_got_owned123 said:
I tried wiping cache and then it gave me a bunch or partitions that were errors. With persist being one of them. After a while, I was able to clear cache with no errors.
Click to expand...
Click to collapse
Then it is up to you what are you going to do with the persist partition. You will lose nothing but time by formating the persist partition. If it not fix your problem then you have to buy a new motherboard for the phone to make phone calls either way because you dont have any efs backup.

bitdomo said:
Then it is up to you what are you going to do with the persist partition. You will lose nothing but time by formating the persist partition. If it not fix your problem then you have to buy a new motherboard for the phone to make phone calls either way because you dont have any efs backup.
Click to expand...
Click to collapse
Persist was the problem. Fixed that partition and was golden. Thank you so much all of you. Took 3 hours. So much Google.

You_got_owned123 said:
Persist was the problem. Fixed that partition and was golden. Thank you so much all of you. Took 3 hours. So much Google.
Click to expand...
Click to collapse
It would be nice if you would post how did you solve your issue. Some will learn and it could help others having the same issue.

Lost IMEI no data no WiFi, files only show in recovery, no efs Backup pls help

Hey everybody I hope someone can help me to rescue my phone.
I flashed carbon and ukm. Then wanted to change GPU governor to simpleondemand and got hot reboots. Was not able to fully boot and lost imei. I tried to restore my backup but they didn't want to boot either, same with another fresh install. Thereafter I deleted synapse folder through recovery and was able to boot my restored ROM. Now I have no imei, no data, no WiFi... In addition my files don't show the files on my phone anymore I only can see them in my recovery, all is still there. My problem is I don't have an extra efs backup only two ROM backups. First I would have liked to know how I can rescue my data? Cause its not showing on booted phone and because of that also not on computer via USB. Is there a proper way to save and what can I do to maybe save my phone. I flashed ROM for years on many different devices and something like that never happened before any help appreciated thanks!!!
Sent from my GT-N8000

Try http://forum.xda-developers.com/oneplus-one/general/fix-people-corrupt-efs-mobile-data-t2836389

OK saw this but my problem is I can't copy anything on my phone. Tried via USB and adb I can't get this file on my phone... Is there another possibility?
And its very strange that computer doesn't show files but my recovery does. And I have installed all drivers
Edit: ok found a way^^ through twrp recovery I could mount it to show on my computer so now will try
Sent from my GT-N8000

You can use TWRP to drag and drop files as MTP is a feature in TWRP now.

zephiK said:
You can use TWRP to drag and drop files as MTP is a feature in TWRP now.
Click to expand...
Click to collapse
Yup that is what I found out thanks :thumbup:
Sent from my GT-N8000

Ok get my data and imei back on coloros but no WiFi working... If I switch to cm same results as before... So this one doesn't work for me do you think I could make an RMA with color os on it?? Damn this feels painful... Never had so many problems on note 3 nexus 5 and previous devices...
Sent from my GT-N8000

Thread can be closed this one saved my ass
http://forum.xda-developers.com/oneplus-one/help/fix-brickloop-audio-fx-fc-efs-corrupt-t2879061
Sent from my GT-N8000

Glad that it worked Backup your EFS this time, just incase. Search on how to do it.

I tried all the methods but still unable to get my IMEI and baseband. i am unable to see efs partition. This happened while restoring the backup in TWRP. Please help.

nikku_hot123 said:
I tried all the methods but still unable to get my IMEI and baseband. i am unable to see efs partition. This happened while restoring the backup in TWRP. Please help.
Click to expand...
Click to collapse
tried all methods of what? Please be more specific if others are going to try and help

playya said:
tried all methods of what? Please be more specific if others are going to try and help
Click to expand...
Click to collapse
already posted here http://forum.xda-developers.com/showpost.php?p=55748042&postcount=111

nikku_hot123 said:
already posted here http://forum.xda-developers.com/showpost.php?p=55748042&postcount=111
Click to expand...
Click to collapse
I firstly flashed the coloros ROM then flashed back to cm11s and then followed the instructions of this brickloop thread you posted. That's the way I got my imei back and a fully working device. Hope this may help.
Sent from my One and only Bacon

Cris7ianO said:
I firstly flashed the coloros ROM then flashed back to cm11s and then followed the instructions of this brickloop thread you posted. That's the way I got my imei back and a fully working device. Hope this may help.
Sent from my One and only Bacon
Click to expand...
Click to collapse
Got it fixed. thanks
http://forum.xda-developers.com/showpost.php?p=55778183&postcount=139

nikku_hot123 said:
Got it fixed. thanks
http://forum.xda-developers.com/showpost.php?p=55778183&postcount=139
Click to expand...
Click to collapse
Good happy for you hope something like that won't happen to us again
Sent from my One and only Bacon

imei back up before rooting
Hi, I want to root my OPO but I don't wanna lose my imei while rooting the device.
Thus how can I back up imei before rooting?
Can smo help me with that?

angelus255 said:
Hi, I want to root my OPO but I don't wanna lose my imei while rooting the device.
Thus how can I back up imei before rooting?
Can smo help me with that?
Click to expand...
Click to collapse
There is no reason for you to lose IMEI while rooting...
Follow this guide to do everything you need to do to root: http://forum.xda-developers.com/showthread.php?t=2788632

[Q] Lost IMEI when tried to restore TWRP backup from other phone

Hello everyone,
I wanted to move all the contents of one Nexus 5 to another one, but I'm learning that I might have failed to properly account for the EFS partition and now my phone has an IMEI of "0" and won't register with T-Mobile. I'm not sure how to restore it at this point, as no backup of this phone was ever taken (it was stock).
Can anyone point me in the right direction? I did find someone else who had this problem here:
http://android.stackexchange.com/questions/85807/nexus-5-imei-0-how-to-restore-imei
and that led me to
http://forum.xda-developers.com/goo...t/modem-nexus-5-flashable-modems-efs-t2514095
which had a script for, I think, helping to download or export the EFS information. Problem is that this phone doesn't have any IMEI info any longer! I do have another N5 I can use if needed to extract what I need and then perhaps I can edit the IMEI manually?
Thanks a lot everyone

Sorry to say, but there is no fix short of sending it to LG and they'll charge you
Sent from my Nexus 9 using XDA Free mobile app

I lost my IMEI a while ago when flashing a openmaster build (that's pure aosp). Reflashed stock by factory images/flash-all.sh, got my IMEI back no sweat.
a maguro wrote this.

beekay201 said:
I lost my IMEI a while ago when flashing a openmaster build (that's pure aosp). Reflashed stock by factory images/flash-all.sh, got my IMEI back no sweat.
a maguro wrote this.
Click to expand...
Click to collapse
That's a lot different than flashing a nandroid from a different device with the efs partition
Sent from my Nexus 9 using XDA Free mobile app

Not sure if it's possible but you could try... I'm thinking it may be possible to edit the nandroid with the EFS part to the IMEI of the 2nd device. Your device should have the IMEI sticker on the back, so you could try to replace the IMEI in the nandroid to the one on the back of the phone. Hopefully you understand what I'm trying to stay and good luck with it.
Sent from my Nexus 5 using the N5X LRX21V ROM

fastboot format cache
Sent from my Nexus 5 using Tapatalk

Tampering with the imei is illegal

procitysam said:
Not sure if it's possible but you could try... I'm thinking it may be possible to edit the nandroid with the EFS part to the IMEI of the 2nd device. Your device should have the IMEI sticker on the back, so you could try to replace the IMEI in the nandroid to the one on the back of the phone. Hopefully you understand what I'm trying to stay and good luck with it.
Sent from my Nexus 5 using the N5X LRX21V ROM
Click to expand...
Click to collapse
This is what I was thinking of doing. How would I get the EFS part from the 2nd device? Would I use TWRP to back that part up, then try to restore only that onto the old phone (after replacing the original, proper IMEI from the label)?
Thanks!

dicecuber said:
Tampering with the imei is illegal
Click to expand...
Click to collapse
Only if your changing it to another. In this case the OP would be legal to try and restore the correct IMEI to the phone.

I've done a backup on the other phone of just EFS, and have three files:
efs1.emmc.win
efs2.emmc.win
recovery.log
But I can't get anything out of the two .win files. I tried changing their extensions to .zip, .tar, and .tar.gz, but none allow me to open them with 7-Zip. And even if I did, they're each about 3MB in size and I wouldn't know where to look for the IMEI. If anyone has any thoughts I would appreciate them.
Thanks

jd1639 said:
That's a lot different than flashing a nandroid from a different device with the efs partition
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
still, recovering /efs... forget copying it from another device.. just flash factory images.

beekay201 said:
still, recovering /efs... forget copying it from another device.. just flash factory images.
Click to expand...
Click to collapse
I've tried that twice already. Factory images would be awesome for me if they worked. After I do it, the IMEI is still zero.
It seems that everyone feels I am trying to do something illegal. On the contrary, I'm just trying to get the phone to work with its own IMEI short of sending it back to LG, which I will do if I have to, but I thought this would be a lot easier to do given that I have two Nexus 5s right hear to play with, and the IMEI stickers still on both of the phones. I read that on the Nexus 5 that stuff is stored in EFS, and erasing it was a total noob mistake (even though I've been flashing phone ROMs for years and years now), since I never suspected that IMEI info would be in non-hardware areas of the phone. Live and learn, I guess.

beekay201 said:
I lost my IMEI a while ago when flashing a openmaster build (that's pure aosp). Reflashed stock by factory images/flash-all.sh, got my IMEI back no sweat.
a maguro wrote this.
Click to expand...
Click to collapse
I will do it again. I flashed factory quite a few times with no luck. I then installed TWRP again just in case I find a way to recover or reinstall the EFS partition. So that's the current state of the phone.

sshanky said:
I will do it again. I flashed factory quite a few times with no luck. I then installed TWRP again just in case I find a way to recover or reinstall the EFS partition. So that's the current state of the phone.
Click to expand...
Click to collapse
You could try this http://forum.xda-developers.com/showthread.php?p=51823398. But from my experience the only way you're going to get the imei back is to send it to LG
Sent from my Nexus 9 using XDA Free mobile app

theesotericone said:
Only if your changing it to another. In this case the OP would be legal to try and restore the correct IMEI to the phone.
Click to expand...
Click to collapse
Suppose it depends on the law you read and how you interoperate it but most of them generically say something like "tamper" or "modify". Either way though, all discussion of it is banned.

jd1639 said:
You could try this http://forum.xda-developers.com/showthread.php?p=51823398. But from my experience the only way you're going to get the imei back is to send it to LG
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
I just checked that out, and it looks interesting. However, someone asked if it rebuilds EFS and the answer was "no".
If anyone has any way to explain something to me in general terms, so that they do not feel they are discussing anything illegal, I would appreciate it a lot. Or a PM, or any roundabout way of discussing it...anything that can help me would be great.
Thanks

Did you ever do a TWRP backup?

Tried LG flash tool but it did not restore the IMEI.

sshanky said:
Tried LG flash tool but it did not restore the IMEI.
Click to expand...
Click to collapse
As mentioned. Unless you have an efs backup from the second device before restoring. You're screwed. Send it to LG for paid repair. It won't cost much.

Major problem

So i got my nexus 5 for like a year now and when i got it i flashed twrp recovery and kernel franco cause....I dont really know.
So i wanted to reset my phone so I did a factory reset and turns out i didnt turn off my freedom app...
So now i cant connect to google services and i cant turn off freedom cause u need a google account to enter the app.
Dont know what to do I need help......

FapMaster784 said:
So i got my nexus 5 for like a year now and when i got it i flashed twrp recovery and kernel franco cause....I dont really know.
So i wanted to reset my phone so I did a factory reset and turns out i didnt turn off my freedom app...
So now i cant connect to google services and i cant turn off freedom cause u need a google account to enter the app.
Dont know what to do I need help......
Click to expand...
Click to collapse
Worst case, just flash the factory image. Stay on stock if you don't know why you flashed twrp and a custom kernel.
Sent from my Nexus 9 using XDA Free mobile app

jd1639 said:
Worst case, just flash the factory image. Stay on stock if you don't know why you flashed twrp and a custom kernel.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
Im not sure either why i did that...
I tried to flash factory image but the fastboot.exe just crashed after something like 10 seconds

FapMaster784 said:
Im not sure either why i did that...
I tried to flash factory image but the fastboot.exe just crashed after something like 10 seconds
Click to expand...
Click to collapse
Exact fastboot error output, please.

nvm i solved it

Please update thread title to let other devs know your issue is solved.
Sent from my Nexus 5

FapMaster784 said:
nvm i solved it
Click to expand...
Click to collapse
How did you solve it?
Sent from my iPhone using Tapatalk

The simle way would be to use the file manager in TWRP to wipe the offending file....
SENT BY ENTANGLEMENT