Root [International] No network connection after failed flash - damaged my phone?

[heat57]

Well, I also had this saga after flashing a Googy Max kernel and thought I had a very fast PDA but no phone. Gone through the same heartache and eventually flashed a Stock 4.1.2 ROM through Odin, then tried Ktool and still couldn't get the EFS partition and data restored. In the end I used EFS Pro Backup and Restore tool (found over on XDA), extracted the xx.tar.gz file I found from some previous backup and used the efs.img file within that to restore - all was well after that.

davoid definitely had a corrupt EFS partition caused by a kernel flash, after which your phone runs perfectly but you cannot get a carrier network connection - WiFi, Bluetooth and everything else works but that. Nandroids do not restore EFS! nor does another or an older kernel!

Moral of the story is, ALWAYS KEEP A BACKUP OF THE EFS PARTITION!!! I never gave it a second thought until I thought I had an expensive android PC instead of a smartphone.

 

[Shotgun84]

davoid definitely had a corrupt EFS partition caused by a kernel flash, after which your phone runs perfectly but you cannot get a carrier network connection - WiFi, Bluetooth and everything else works but that. Nandroids do not restore EFS!

Nandroids don't restore the modem either so I'm sticking with bad modem, as the problem was caused by a ROM flash and not a kernel flash. If the original flash had corrupted the efs the phone would've booted into factory mode when the nandroid was restored the first time. But factory mode didn't appear until after the botched efs restore which points towards that being the culprit of the corrupted efs.

 

[davoid]

If the original flash had corrupted the efs the phone would've booted into factory mode when the nandroid was restored the first time. But factory mode didn't appear until after the botched efs restore which points towards that being the culprit of the corrupted efs.

This seems to me like the most likely piecing together of events towards a coherent causal understanding. If you know what I mean.

 

[Shotgun84]

Yep clear as mud

 

[drkarasheed]

Is your IMEI number still there? Might be a corrupt EFS

Just now I flashed my Galaxy S3 to a latest version(Official). Following this the phone refuses to either receive calls or make any call.
On examination by the service man, it is revealed that the IMEI No of the phone is altered ????.
The phone is still in the warrantee period. Purchased from a store in the middle east, but being used in India.
The phone can be used for all other purposes, but for telephony. Please advise

drkarasheed@gmail.com