What you do with your Phone is up to you and i donīt take any responsorbility for any Damages you do/did.
Also i donīt know if this works for other Phones, since the S3 LTE GT-I9305 is diffrent in the Order of Partitions to other phones.
After Hours of Searching and nothing found...
Iīve finally got a fix for the No Sim/ No IMEI Problem.
I had to
1. reflash Original Samsung Firmware (Jellybean)
2. root and cwm it
3. then flash cwm 188.8.131.52 or TWRP
4. Flash AOSB (or any other Kitkat ROM)
(6. Then it asked for my PIN )
6. Flash GAPPS
Done, now everything works again
I was Flashing AOSB for the First time and my Sim Card didnīt work anymore.
After Hours of Searching i saw a Post where someone said that the IMEI doesīt seem to be there anymore.
I looked for it and there Realy was no IMEI.
I tried everything:
IMEI Recovering after Brick
Samsung Tool with Broadcom NV Tool
ADB Recovery of IMEI
but nothing worked.
After 4 Hours i decided i should reflash to stock. (Guarantee)
After Flashing done it didnīt boot, but after reflashing CWM any AOSB(Kitkat Rom) i got my IMEI back again.
Everything working fine since then.
If you are flashing 4.4 KITKAT for the First Time be sure you use the Right CWM or TWRP version !
or it will damage your EFS Folder and infact your IMEI so no Sim Funktion is there anymore!!
I was short before sending it in because i thought i wouldnīt get it to work anymore
( Iīm flashing everything and had problems like this already since years but this was almost to much )
Hope i could help anyone