Any sat receiver hobbyist here? I was wondering how satellite receiver firmwares are written? What should I know in order to write firmware?

 

What part of the satellite receiver are you talking about?

The IR remote
The display
Decoding the information from the baseband signal
Something else
​

 

You might want to look at Dreambox

https://en.wikipedia.org/wiki/Dreambox

 

Any sat receiver hobbyist here? I was wondering how satellite receiver firmwares are written? What should I know in order to write firmware?

A thorough understanding of C and Linux to start.