I linked to the sticky you are talking about several times, I have read it several times. I just dont understand it. What else do you want me to say?
This for example:
"- Latest WiiU firmware : 5.5.1
- Latest safe WiiU firmware version: 5.3.2.
- Some WiiU backups can be played on firmwares 5.3.2 and lower, using Loadiine.
- IOSU is being developed for firmwares 5.5.1 and lower.
- Stay on 5.3.2 if you want to use current exploits.
- Stay on 5.4.0 if you want to use mp4 exploits with loadiine GX2 (not all homebrew ported yet).
- Stay on 5.5.1 if you want to play retail games online while you wait for Hykem's exploit.
- Don't update if you want to use current of future exploits."
What is IOSU? (As I understand it its some kind of firmware tweak, realeased on Github because the original dev want to share it since he normaly do 3DS), but thats all I have found about this? Have I missed something? What is this?
"Stay on 5.3.2 if you want to use current exploits." What are concidered to be the "current exploits"?
As I have understand it the loadliine GX2 is whats most interesting as of right now(I might be wrong?), but what are these reffered as "mp4 exploits"? I thought there only was a web exploit at first..