1. Microtronik Autohex II and Hexprog forum
  2. Autohex II BMW
  3. BMW Locksmith
  4. bmw cas4 write error
PepeSoft
2021-12-02T17:42:57Z
Hello

have difficulties writing new mileage to cas4.
reading ok but when writing hextag gives error : Chipset rejects speficic command - ref 948-
Hextag tries to erase d-flash but it can`t. Anyone have solution to this? cas error.JPG You have insufficient rights to see the content.
Sponsor

Start ECU Repairing, ECU Cloning, and Chip Tuning today, all from an incredible price of just USD 385.00.

No annual fees, no extra charges: You pay only when you have a job.

Visit Hexprog II page

BMWZG
  •  BMWZG
  • 100% (Exalted)
  • Advanced Member
2021-12-03T08:23:48Z
Looks like damaged flash in MCU.
PepeSoft
2021-12-03T08:28:57Z
I have one old original cas from car and one brand new from bmw. Both give same error...
Autohex_II_BMW
2021-12-04T08:23:35Z
Originally Posted by: PepeSoft 

Hello

have difficulties writing new mileage to cas4.
reading ok but when writing hextag gives error : Chipset rejects speficic command - ref 948-
Hextag tries to erase d-flash but it can`t. Anyone have solution to this? cas error.JPG You have insufficient rights to see the content.



hello
try to make CAS CPU hot and try to write again.
Willisodhiambo
2022-01-27T09:09:33Z
Was this ever resolved?
Autohex_II_BMW
2022-01-28T07:12:10Z
Originally Posted by: Willisodhiambo 

Was this ever resolved?



this issue not with device , must be depends on cas , most of the cas working direct, some rare cases give this issue can be solve by the method explained above .
rghelase2001
2022-02-27T19:54:51Z
Originally Posted by: PepeSoft 

I have one old original cas from car and one brand new from bmw. Both give same error...



Did you solve the issue?
Because I had the exact same issue, and tried everything.
Take a look to my thread, see if the there is anything new:

HexProg issue FF FF in DFlash CAS4+  

Similar Topics
Users browsing this topic
    1. Microtronik Autohex II and Hexprog forum
    2. Autohex II BMW
    3. BMW Locksmith
    4. bmw cas4 write error