Thanks for the document, however seems to be for other chips different to the ones in the boards Pico and Lyra. I purchased both for evaluations pico max and lyra B but still unable to secure boot them and encrypt flash content. I am going to investigate how to contact your team. If possible please ...

Hello: This is very important. It is a dealbreaker to switch development from pi pico 2 to luckfox boards. For pico 2 it is clearly documented on how to write to OTP and they provide scripts to sign and encrypt firmware. The chips used in luckfox certainly do have OTP and even crypto hardware but wi...