Got S3 T999 4.3 T mobile For repair function via z3x .. First of all all rooting failed using software like v root etc...
Check this link
http://forum.gsmhosting.com/vbb/f777.../#post10029067
Than I figured it out myself .. If all recoveries failed than just install any but disable the restart option in odin ... take battery out and put it back Now press volume up, home, and power you are in cwm now(Temporary).. and follow the rooting instructions here
[GUIDE] Root T999 (variants) on android 4.3 AND remove knox - xda-developers
Now you are rooted and ready to repair imei..
Now latest version which is 16.8 will not repair imei it will corrupt like 00 or 01..
Download z3x samsung version 14.7 from here
samsungtool_14.7 - Download - 4shared - Avijit Chaudhury
Type *#7284# and select "Modem" for UART option and restart Now insert c3303k uart into z3x com or ufs making it direct com as I did.. Press repair fill option and write now when it says rebooting plug mobile into uart with z3x/ufs(Direct com) and wow you are done now.. Hope it will help others..
(
Thanks to hasanr92 for right direction look this thread where he mentioned the version of samsung tool)
http://forum.gsmhosting.com/vbb/f453.../#post10009256
Here is log
Code:
Selected model: T999
Selected port: COM1 Communications Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: SGH-T999
Android version: 4.3
Product code: Not Active
Phone version: T999UVUEMJC
PDA version: T999UVUEMJC
CSC version: T999TMBEMJC
IMEI: Unknown
Checking Super user right... true
Writing data to phone... OK
Rebooting phone... OK
Checking phone at COM1 OK
Repairing IMEI... OK
Repairing network settings... OK
Reseting... OK
Repair done
Done with Samsung Tool v.14.7
Note (S3 Imei was corrupted because of 16.8 in the log)