I had heard of TTT (time travel tracing). I thought it was a Microsoft proprietary debugger.

RR is new to me, and very cool. I've missed TTT.

https://docs.microsoft.com/en-us/windows-hardware/drivers/de...

https://rr-project.org/

RR kicks serious ass. My only regret is that it can't be used on most of the embedded targets I develop for. (Although getting a gdb connection to such targets is itself a battle sometimes)

Embedded development is terrible. Often even if you have a debugger or profiler, it hasn't worked since the platform bring-up 2 years ago, and won't even run because the system doesn't have enough free memory anymore.

Why would they even both to encrypt the firmware? Is that a regulatory requirement somewhere?