Hello. I'm trying to reverse engineer a firmware for a cpu AIO cooler. My goal is to improve the support of that cooler on my OS.

I managed to unpack the PKG file (the firmware update distributed on the official website), which allowed me to get a bunch of files. One of these files is of unknown type, and I think it must be the executable since others files are of known type (config files and medias).

The file is named ctrlboard.itu, I uploaded it on limewire.

I tried to analyse it using radare2, but unless I'm mistaken, it's not an arm, mips or riscv binary. However I'm a real noob in RE and may be wrong.

If you have experience analysing executables, could you tell me what you think it is ?