I just purchased autohex II (should be arriving in s few days). Will I be able to edit cas 2 / cas 3 via autohex?
yes you can we support all BMW from cas1 and up
The normal steps for the replacement of CAS (when original CAS is dead)
1. Get a working CAS with valid key
2. Read DME ISN and write it to CAS
3. Restore FA from LM to CAS from FA manager
4. Change VIN for CAS from advanced option in CAS replacement
5. GO back to the main menu in software
6. Start again with coding/programing
7. DO coding for CAS