Hello,  
so far I've only used the HEXPROG to repair FRM's.  Now a BMW garage has sent me two identical CAS3's so I can clone one to the other.
I know what the procedure is  (READ EEPROM and FLASH, save to pc and WRITE to donor CAS3)   
But what I don't know is if the original CAS3 has corrupted memory.    Is there any database of CAS3 files that I could compare my read with?   I found some on some other forums, and even though they have identical part numbers, the files were not even close.
Both CAS3 have this on the label:
61.35-9147222-01
2090084804
MCV 00.00.00    FSV 2.4.6 OSV 3.3.0
HW C4 /  SW 19.4  / COD 09   / DIAG-INDEX 06a0
5wk4 9514XBR
Both CAS3 units have the numbers above but the FLASH files are not even close.   I expected that they would be at least a 95% match.
I could post a link to what I read from both CAS3 modules if someone would like to have a look.
Thanks for any advice!