Problem:
Trying to read an Audi Bosch DQ381 gearbox with CG FC200 ecu programmer on bench but failed to connect with this TCU.
It says error “E111 Security Authentication Failed”, Any solution?
Solution:
The boot version is bh1g0401.
This is generation 2 bootloader 401.
You can not read it with fc200.
Software too new and fc200 can’t break security, yet.