Why can't we just sign an update or homebrew?
I have read that geohot made a homebrew called test.pkg that was signed like an official application and therefore could be run on OFWs, for example 3.66.
Why can't we just sign all homebrews like this, and then run them with OFW's so we can play online?
And second question Why can't we just sign a CFW like this so we are able to install it from 3.66?
I understand that I have missed something. The very knowledge hackers wouldn't have missed this. I'm just curious.