[zhovner]

Unfortunately many other vendors encrypts firmware updates, like Panasonic do. I dream to hack Panasonic GH5 and G80 cameras firmware to tune some options.

There is a tool to binary patching Pansonic GH4 and GH2 firmware called Ptool. https://www.personal-view.com/faqs/ptool/ptool-faq It decrypts encrypted firmware, patch binary and then encrypt again. So you can update firmware via default process.

[getorix]

Honestly speaking, encryption never stopped me. Doesn't matter if it is something simple like M9 xor described in this story or fancy AES/HMAC from Canon or Sony. It just makes reversing more complicated and invasive. You have to open body, rip off flash or solder wires somewhere to sniff comms. Unlike Apple, camera vendors are not that paranoid and try to keep firmware unencrypted on flash to reduce the boot time. In other words this is the part when your wife can kill you for bricking the camera :)