i don't get any mobile connection - Nexus 5 Q&A, Help & Troubleshooting

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

Related

[Q] No Radio Signal on Nexus 5 32 gb after restoring from TWRP back up from 16gb N5

I did a TWRP nandroid backup on my nexus 5 16gb model. I then transferred it to my 32gb Nexus 5 model and tried restoring from TWRP. Now my phone has no signal. Help please?
I think it might have something to do with the parition of the IMEI? Any help would be great thanks!!!
Did the nandroid include the efs partition? If it did you're screwed
Unless he manually checked efs he should be okay.
Sent from my Nexus 5 using Tapatalk
---------- Post added at 07:52 PM ---------- Previous post was at 07:51 PM ----------
Valdeck said:
Unless he manually checked efs he should be okay.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Also would flashing a factory image redo the era?
Sent from my Nexus 5 using Tapatalk
Hi so I cut my losses and did a RMA. For future reference if I do a TWRP nandroid backup and I DON"T CHECK EFS box and i transfer the back up to my new nexus 5 phone. It should be okay?
khoadpham said:
Hi so I cut my losses and did a RMA. For future reference if I do a TWRP nandroid backup and I DON"T CHECK EFS box and i transfer the back up to my new nexus 5 phone. It should be okay?
Click to expand...
Click to collapse
Yes, just backup data
So leave all the boxes that are default unchecked, UNCHECKED?
jd1639 said:
Yes, just backup data
Click to expand...
Click to collapse
Yes and uncheck system and boot
Atta boy, make your problem google's.
good day.
chopper the dog said:
Atta boy, make your problem google's.
good day.
Click to expand...
Click to collapse
Agreed
Quick question, could you explain to me what is backed up when system and boot is checked, please?
khoadpham said:
Hi so I cut my losses and did a RMA. For future reference if I do a TWRP nandroid backup and I DON"T CHECK EFS box and i transfer the back up to my new nexus 5 phone. It should be okay?
Click to expand...
Click to collapse
U can back up efs just dont restore efs from one device to another in the radio thread there are many ppl with this problem.
Why are people messing with EFS backup to begin with?
Seems like the need to backup EFS is causing more dumbass errors than anything these days....
Sent from my Nexus 5 using Tapatalk
Well its really user error. If you don't know what something is, learn about it before messing something up.
Would a factory image restoration fix a device with messed up efs partition?
I never had efs issues with my galaxy nexus, but I'd like to know the answer.
Sent from my Xiaomi MI2S
Well dees troy said in the twrp tread that you have to change the serial code of the backup to restore on a deferent device so I don't really feel sorry for ppl doing this I would never restore from another device that's just asking for trouble. @_jordan_ no there's no way to fix it
Yeah no kidding. Its a user inflicted problem.
Sent from my MI 2SC

[Q] Sim not recognized, imei lost...

I've installed Droid_Kang V10 rom. It runs fine except for not recognizing my Sim and imei is lost.
The same sim works fine on other devices and worked fine on the nexus 5. What should I do? Thanks
dilgit said:
I've installed Droid_Kang V10 rom. It runs fine except for not recognizing my Sim and imei is lost.
The same sim works fine on other devices and worked fine on the nexus 5. What should I do? Thanks
Click to expand...
Click to collapse
Did you do an EFS* backup?
If you did, just restore it, and you're going to be fine.
If you didn't, you should contact service.
*EFS= Partition with imei(/esn), mac adress etc.
dilgit said:
I've installed Droid_Kang V10 rom. It runs fine except for not recognizing my Sim and imei is lost.
The same sim works fine on other devices and worked fine on the nexus 5. What should I do? Thanks
Click to expand...
Click to collapse
Get the factory image and extract the cache.img
Then run: fastboot flash cache cache.img
Sent from my Nexus 5 using xda app-developers app
jd1639 said:
Get the factory image and extract the cache.img
Then run: fastboot flash cache cache.img
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
This worked
I wish people would stop spreading the "if you didn't backup your efs your screwed" line
This isn't a Samsung phone
Sent from my Nexus 5 using Tapatalk
villovil said:
This worked
Click to expand...
Click to collapse
Of course it did. Your welcome.
hey guys, I have the same issue that op has no imei and no sd card access. Only difference is fastboot flash cache didnt fix it. I have tried restoring factory image, flashing cache, wiping in stock recovery. I didnt make a efs backup. Is there any way this can be fixed without RMA?
italia0101 said:
I wish people would stop spreading the "if you didn't backup your efs your screwed" line
This isn't a Samsung phone
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Sorry, i didn't notice that.
But in most cases missing imei means efs is lost.
I have an issue here. I unlocked bootloader, wiped everything without taking any backup (i know im stupid) ..i dont have any backup of efs...and after i flashed paranoid latest beta im not getting any signal at all and IMEI number in about phone is showing UNKNOWN. I don't know what to do...please help?
7alvi said:
I have an issue here. I unlocked bootloader, wiped everything without taking any backup (i know im stupid) ..i dont have any backup of efs...and after i flashed paranoid latest beta im not getting any signal at all and IMEI number in about phone is showing UNKNOWN. I don't know what to do...please help?
Click to expand...
Click to collapse
Just for future purpose: your problem is now solved
http://forum.xda-developers.com/showthread.php?p=51593231&postcount=13
Tampering with the imei is illegal
Sent from my Nexus 5

[Q] IMEI of 0 after TWRP restore

I shattered the screen on my Nexus 5 so I ordered a replacement from Google and before switching to the new one, I made a nandroid backup using TWRP.
I put my SIM in the new Nexus, transferred my nandroid backup, and restored it to my new phone.
Now, I cannot connect to AT&T due to my IMEI showing as 0.
I think I have narrowed down the problem to restoring the EFS partition on the new phone when I wasn't supposed to? So far, I have tried restoring the phone to stock (from this guide). I even tried manually changing the IMEI to the correct number (but it doesn't stick, just reverts to 0).
Is there something else that needs to be wiped in the stock restore process that's not covered in that guide? What am I missing? Any help is greatly appreciated.
Sounds like you're gonna need another replacement
sent from my HAMMERHEAD neXus
You're hosed. You can't transfers the imei to another phone
CRIME INC. said:
Sounds like you're gonna need another replacement
sent from my HAMMERHEAD neXus
Click to expand...
Click to collapse
Ouch....
Is there anything I should have done differently? Just not flash the EFS partition? I normally setup from scratch but I loved how I had my other setup and just wanted to retain that configuration.
jd1639 said:
You're hosed. You can't transfers the imei to another phone
Click to expand...
Click to collapse
I wasn't intending on transferring the IMEI. I just want to get the phone's IMEI corrected so it works.
qwen3579 said:
I wasn't intending on transferring the IMEI. I just want to get the phone's IMEI corrected so it works.
Click to expand...
Click to collapse
By restoring the efs partition you did try. It's contained in there. That's where things went wrong and there isn't anything you can do about it
jd1639 said:
By restoring the efs partition you did try. It's contained in there. That's where things went wrong and there isn't anything you can do about it
Click to expand...
Click to collapse
Great.... SO there is no way to reset the EFS partition, I'm guessing?
Just goes to show if you don't know what you're doing you should stay well clear!
You're going to have to buy a new one as there's no way Google are going to RMA it
---------- Post added at 01:54 PM ---------- Previous post was at 01:54 PM ----------
qwen3579 said:
Great.... SO there is no way to reset the EFS partition, I'm guessing?
Click to expand...
Click to collapse
Not unless you backed up the new one first, no
EddyOS said:
Just goes to show if you don't know what you're doing you should stay well clear!
You're going to have to buy a new one as there's no way Google are going to RMA it
---------- Post added at 01:54 PM ---------- Previous post was at 01:54 PM ----------
Not unless you backed up the new one first, no
Click to expand...
Click to collapse
That's what I thought. I usually back up everything before doing anything. I just got in a rush....
EddyOS said:
Just goes to show if you don't know what you're doing you should stay well clear!
You're going to have to buy a new one as there's no way Google are going to RMA it
---------- Post added at 01:54 PM ---------- Previous post was at 01:54 PM ----------
Not unless you backed up the new one first, no
Click to expand...
Click to collapse
Speed kills
---------- Post added at 08:02 AM ---------- Previous post was at 08:01 AM ----------
qwen3579 said:
That's what I thought. I usually back up everything before doing anything. I just got in a rush....
Click to expand...
Click to collapse
Speed kills
Thanks for the help guys. Luckily, I still have my old with the cracked screen. I'm just going to have to take the screen off the new one and put it on my old one..which is what I was trying to avoid.
Beats having to buy another one due to my screw up.
jd1639 said:
Speed kills
---------- Post added at 08:02 AM ---------- Previous post was at 08:01 AM ----------
Speed kills
Click to expand...
Click to collapse
LOL...says the guy with a Porsche!
qwen3579 said:
That's what I thought. I usually back up everything before doing anything. I just got in a rush....
Click to expand...
Click to collapse
It's a harsh lesson
Alright, so I swapped the motherboards of the phones, booted up my new phone, restored from nandroid (avoiding the EFS this time, just in case) and I'm back up - crack free.
Thanks for the info guys, lesson learned.
"What do we do when we fall"?
qwen3579 said:
Alright, so I swapped the motherboards of the phones, booted up my new phone, restored from nandroid (avoiding the EFS this time, just in case) and I'm back up - crack free.
Thanks for the info guys, lesson learned.
"What do we do when we fall"?
Click to expand...
Click to collapse
Glad you got something working
Yea. All guides need to make sure to post a warning and a link to the EFS backup thread. http://forum.xda-developers.com/showthread.php?t=2514095
First thing I did was make a backup of mine and store it away in a safe place as well as on the phone. I've flashed two friend's N5's with CM as well, and I did the same with their EFS just in case something happens.
One other route you could try is restoring the phone to factory default, relock the bootloader so the mod trip isn't set, and send it back saying it wont connect to cell network, and take your chances RMAing it. However the display swap may be easier. Either way once you swap your display back, do a EFS backup with that link and save the files it makes in a safe place.
qwen3579 said:
I shattered the screen on my Nexus 5 so I ordered a replacement from Google and before switching to the new one, I made a nandroid backup using TWRP.
I put my SIM in the new Nexus, transferred my nandroid backup, and restored it to my new phone.
Now, I cannot connect to AT&T due to my IMEI showing as 0.
I think I have narrowed down the problem to restoring the EFS partition on the new phone when I wasn't supposed to? So far, I have tried restoring the phone to stock (from this guide). I even tried manually changing the IMEI to the correct number (but it doesn't stick, just reverts to 0).
Is there something else that needs to be wiped in the stock restore process that's not covered in that guide? What am I missing? Any help is greatly appreciated.
Click to expand...
Click to collapse
Somewhere in xda there is a guide to create an imei,i don't have the link to the thread, I'll see if i can find it for you or you may Google it
Sent from my Nexus 5 using Tapatalk
Juansegovia20 said:
Somewhere in xda there is a guide to create an imei,i don't have the link to the thread, I'll see if i can find it for you or you may Google it
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yeah, I found a guide CATing the IMEI to /dev/pttycmd1 - that didn't work. Most are hesitant with sharing info on changing IMEIs, which is understandable. It's just frustrating knowing what the problem is and not being able to fix it.

IMEI=0 - how to enter working IMEI?

Hi everyone & thanks for reading this!
I bought 2 new, unused Nexus 5 as presents for my sisters for Christmas (not via playstore, but via a reseller. Still: new, sealed, unused.)
I unlocked, installed a custom recovery, rooted both devices without problems, then set up one in a smartphone-newbie-friendly way, which took quite some time. Then, to save me some time, I fear I made quite a big mistake: I made a nandroid-backup of the newly-setup device and restored/installed it on the second nexus (so I wouldn't have to change all the settings again, install apps, etc).
Unfortunately, this seems to have erased the IMEI on the second device (it shows as IMEI=0), so I can't connect to any cell service. Some googling leads me to believe that this might be due to a corrupt/missing EFS-folder, which, second mistake, I did NOT make a backup of beforehand. I know, it's my own fault - my thinking was: why backup, there's nothing backupworthy on the device *yet*.
FML. :crying:
I am not sure if the phone is still in warranty (and even if it was - I guess I voided that by unlocking/rooting?!). I want to re-iterate that I own both devices LEGALLY, I have the bill, I have the original sticker with the original IMEI - I just need a way to re-enter it. Any dialer-code for that? Any modify-able EFS-backups? Any other way?
Thanks in advance!
PS: tried so far & found useless: other simcard (not working) & simcard in other phone (working), so it's a device-issue; factory-reset;
Try fastboot flashing the cache.img from the factory image.
jd1639 said:
Try fastboot flashing the cache.img from the factory image.
Click to expand...
Click to collapse
thanks for the super-quick reply jd1639!
to make sure I understand you correctly:
I can use the factory image from
https://dl.google.com/dl/android/aosp/hammerhead-kot49h-factory-02006b99.tgz
(nexus 5, android 4.4.2), extract the cache.img from there & flash that via fastboot? (or would it have to be a factory image of this very device - which I do not have, unfortunately)
and, just for my understanding: how does that restore the imei? I mean, the factory image itself (or it's cache) can't really contain MY imei. does this just delete the invalid imei & force the phone to get it's original imei from some other, not yet overwritten source? e.g. hardware?
Yes fastboot flash the cache.img from the factory image is a known fix for this issue. Something has corrupt your cache causing the imei to not display properly
Sent from my Nexus 5 using Tapatalk
Thank you for clarifying, rootSU - that gives me hope.
I will try tomorrow & hopefully report success
Just tried this (twice) - unfortunately no success, IMEI is still 0
downloaded factory image, verified md5, extracted cache.img, flashed in fastboot; every step successful - final result is still IMEI=0. Tried again, this time erasing cache beforehand for good measure - still IMEI 0.
What else can I try?
PS: this seems to be the only issue - no hw-problems or similar. directly after boot, the device seems to connect to a mobile network for a second, then gets kicked out (due to missing/invalid IMEI, I suppose).
RogerG said:
Just tried this (twice) - unfortunately no success, IMEI is still 0
downloaded factory image, verified md5, extracted cache.img, flashed in fastboot; every step successful - final result is still IMEI=0. Tried again, this time erasing cache beforehand for good measure - still IMEI 0.
What else can I try?
PS: this seems to be the only issue - no hw-problems or similar. directly after boot, the device seems to connect to a mobile network for a second, then gets kicked out (due to missing/invalid IMEI, I suppose).
Click to expand...
Click to collapse
Did you use TWRP for the original nandroid backup that you restored on the new one? If so, you may have backed up, and consequently flashed the EFS from the original N5 to the new one. If so, I hate to say this, but I don't think there's any hope of getting the IMEI back on the new one...
RogerG said:
Just tried this (twice) - unfortunately no success, IMEI is still 0
downloaded factory image, verified md5, extracted cache.img, flashed in fastboot; every step successful - final result is still IMEI=0. Tried again, this time erasing cache beforehand for good measure - still IMEI 0.
What else can I try?
PS: this seems to be the only issue - no hw-problems or similar. directly after boot, the device seems to connect to a mobile network for a second, then gets kicked out (due to missing/invalid IMEI, I suppose).
Click to expand...
Click to collapse
I had a problem with my phone IMEI (Nexus 4) before. It would say unknown. The reason why was I flashed a bad radio and boot loader version. So what I did was find a thread on the N4 section for the right radio and bootloader. I'm not exactly sure if this will work on your part, but I don't think it'll hurt to try. Oh and maybe reflash the factory image.
Sent from a potato
---------- Post added at 12:47 AM ---------- Previous post was at 12:44 AM ----------
Sorry for double post. Check this link out and go to the second post talking about IMEI. Idk if this will help you out. Good luck
http://forum.xda-developers.com/showthread.php?t=2510966
Sent from a potato
charesa39 said:
Did you use TWRP for the original nandroid backup that you restored on the new one? If so, you may have backed up, and consequently flashed the EFS from the original N5 to the new one. If so, I hate to say this, but I don't think there's any hope of getting the IMEI back on the new one...
Click to expand...
Click to collapse
yes, that's precisely what I did.
That's why I had little hope of restoring the original IMEI and was instead asking in my original post for a way to enter it anew (since I KNOW what it should be).
CellPhish said:
I had a problem with my phone IMEI (Nexus 4) before. It would say unknown. The reason why was I flashed a bad radio and boot loader version. So what I did was find a thread on the N4 section for the right radio and bootloader. I'm not exactly sure if this will work on your part, but I don't think it'll hurt to try. Oh and maybe reflash the factory image.
Sent from a potato
---------- Post added at 12:47 AM ---------- Previous post was at 12:44 AM ----------
Sorry for double post. Check this link out and go to the second post talking about IMEI. Idk if this will help you out. Good luck
http://forum.xda-developers.com/showthread.php?t=2510966
Sent from a potato
Click to expand...
Click to collapse
thanks I will try this (even though I think my problem is not related to radio/bootloader and I am generally skeptical about my chances of "restoring" IMEI, as opposed to "manually entering/modifying it"). Still, willing to try anything, thanks for the idea!
RogerG said:
thanks I will try this (even though I think my problem is not related to radio/bootloader and I am generally skeptical about my chances of "restoring" IMEI, as opposed to "manually entering/modifying it"). Still, willing to try anything, thanks for the idea!
Click to expand...
Click to collapse
If all fails you can try to contact LG service and tell them your situation. Though its not good to lie, just tell them you got the IMEI=0 problem, they'll say its a hardware problem and will replace the motherboard(if your device is on warranty)
Sent from a potato
You'll probably have a hard time here finding anyone to help you manually entering or modifying the imei.
rootSU said:
Yes fastboot flash the cache.img from the factory image is a known fix for this issue. Something has corrupt your cache causing the imei to not display properly
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
The IMEI is stored in the EFS partition, not the cache partition.
RogerG said:
yes, that's precisely what I did.
That's why I had little hope of restoring the original IMEI and was instead asking in my original post for a way to enter it anew (since I KNOW what it should be).
Click to expand...
Click to collapse
Sounds like you turned the phone into a $400 paperweight. TWRP backs up and restores the EFS partition by default, and each device has a unique EFS partition, which contains the IMEI among other things. I don't know of a way of manually restoring the EFS data. This is unfortunately a $400 lesson for people who tinker without first doing their homework.
Hey guy. Let's not be so judgemental. There's always a risk of the imei being corrupted when you flash a ROM. As a matter of fact just before I even unlocked my nexus the imei got corrupted and I had to factory flash my phone to save it. Its scary but op, if you manage to get your phone working again make a backup and store it on your PC and or email yourself the backup.
BirchBarlow said:
The IMEI is stored in the EFS partition, not the cache partition.
Click to expand...
Click to collapse
Ha ha thanks! Can't believe you think I don't know that :/
Actually the "EFS partition" is 2 partitions..
/dev/block/platform/msm_sdcc.1/by-name/modemst1
And...
/dev/block/platform/msm_sdcc.1/by-name/modemst2
That doesn't change the fact that reflashing the cache.img is a known fix for missing IMEI. Corrupt cache can make the imei appear as 0 even when the EFS imei is in tact so reflashing the cache.img can resolve this.
Unfortunately though, I didn't read the OP fully. I just elaborated on an earlier response for the OP
jd1639 said:
You'll probably have a hard time here finding anyone to help you manually entering or modifying the imei.
Click to expand...
Click to collapse
Modification is illegal however many mobile repair shops have equipment that can rewrite the existing imei and are legally allowed to. In the UK, this costs about £20. That said, i'm not aware of anyone having it done on the nexus 5. The galaxy s3 with a single /EFS partition could be done easily by a professional
Sent from my Nexus 5 using Tapatalk
rootSU said:
Modification is illegal however many mobile repair shops have equipment that can rewrite the existing imei and are legally allowed to. In the UK, this costs about £20. That said, i'm not aware of anyone having it done on the nexus 5. The galaxy s3 with a single /EFS partition could be done easily by a professional
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yes but all talks about how to change it in any way are not allowed here. Legally the only people that are allowed to do so is the OEM. You can look at international news reports of cellular dealers that are doing so are being closed down and arrested.
That is why it is well know to back up the efs before you do anything.
Bat cave One
My newly bought Nexus 5 shows IMEI 0 also
RogerG said:
thanks I will try this (even though I think my problem is not related to radio/bootloader and I am generally skeptical about my chances of "restoring" IMEI, as opposed to "manually entering/modifying it"). Still, willing to try anything, thanks for the idea!
Click to expand...
Click to collapse
i just update my newly bought nexus 5 from initial 4.4.2 to 4.4.4 which is appear at update section but then my IMEI appear =0 .. dont understand what to do..
if your problem solved, pls tell me the detail procedure to recover my IMEI no.
RogerG, did you ever get this working? I'm on 6.0 and having the same problem, flashing cache.img also does nothing.
Thanks.

[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
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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.
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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.
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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.
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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
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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.
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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.

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