Defective boot - no chance to upgrade, reset etc.

I starting this thread for sharing experience with this issue. My op-1 won’t start with TE boot (com+power).
Normal boot operate fine.
I remember TE boot work when I purchase OP1. But it disappear without any reason.
Any experience is highly appreciated. TE support not provided nothing helpful.

Did you mail TE?

Yes, but they only tell me that DSP board defective and must be replaced. It cost a lot!

Any updates? Very interested.