I'm still running 3.90 m33-3 on my 1001fatty

Does really all that I thought I want, but I recently decided to try out irshell, which is seeming pretty difficult at the moment, since I really have no idea what to do with the main site down..

Could anyone point me in the right direction?

Should I upgrade to a different CFW, regardless of irshell requirements?

Any help or thoughts would be greatly appreciated.

I've searched the forums & main site but navigation is pretty difficult in terms of finding specific comparisons and details regarding what works with what, etc..