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popov
24th January, 2023, 09:57 AM
Hello , have to unlock BMW BDC module on F056, the software says: version is not supported and need downgrade. Have eeprom read but now SWFL is lost and downgrade programming failed.


Ready to program ECU, please wait
Security certification in progress
Safety certification passed
Erasing Flash
Flash erased successfully
Programming ECU
ECU programming failed
Ending programming, please wait

BDC_GW is OK and can be down or updated.
BDC_BODY - BTLD : 00002418_081_010_010
eeprom is 95256

Somebody have a experience with BDC_BODY programming?
u.s
24th January, 2023, 10:12 AM
what tool are you using ?
popov
24th January, 2023, 10:13 AM
CGDI BMW , ICOM, VVDI2 ...
Antonio266
24th January, 2023, 10:20 AM
Both SWFL and CAFD re Erased.
With CGDI go to 'F series Programming', then 'Advanced programming', Select both SWFL version 81, and try to Reflash it.
Since your BTLD is still there, it should be able to restore it.
popov
24th January, 2023, 10:27 AM
Both SWFL and CAFD re Erased.
With CGDI go to 'F series Programming', then 'Advanced programming', Select both SWFL version 81, and try to Reflash it.
Since your BTLD is still there, it should be able to restore it.

The result is:

Ready to program ECU, please wait
Security certification in progress
Safety certification passed
Erasing Flash
Flash erased successfully
Programming ECU
ECU programming failed
Ending programming, please wait
Antonio266
24th January, 2023, 10:30 AM
The result is:

Ready to program ECU, please wait
Security certification in progress
Safety certification passed
Erasing Flash
Flash erased successfully
Programming ECU
ECU programming failed
Ending programming, please wait
This is with Eeprom in its original state, right? Do you hear relays clicking or nothing at all?
popov
24th January, 2023, 10:32 AM
This is with Eeprom in its original state, right? Do you hear relays clicking or nothing at all?
With original eeprom , when power is applied relays are clicking.BDC_GW can be up or downgraded. But down or up on Body - failed. All this is on bench. A bit hot air on the mcu didnt change anything.
Manta1600
24th January, 2023, 10:37 AM
Try with other tool CGDI will not do it
u.s
24th January, 2023, 10:45 AM
Try E-Sys, the picture you posted doesn't show CAFD file