BMW 2 F44 GC can't read SAS ECU in E-SYS car running (no backup SVT)

[KVD-NL-BMW]

Are there any fault codes? Try resetting flexray and see if SAS is being detected.

Thank you 90,

The knowledge I do not have is most likely my problem: I'm a private owner not a professional. But let me check with you:

- Flexray (never heard of that so i googled): Do I need ISTA for that? And is ity safe to use ISTA? No need to flash or recode every ECO doimg the flexray reset?
- And if so can I just download ISTA (P or D) and start using it?

Rgrds KvD