Hacking wiiflow forwarders + manual covers

[ng80092a]

hey i got wiiflow working with nsmb

2 things, i can only run it with the sd card and 222 version, i installed the wad with the forwarder included on 1.1 but when i start it, it goes back to start menu, what is wrong?
Other thing is, i wanna manually add covers to the games, but i cant acess it since the whole drive is in wbfs format, how can i solve it?

one last tip, i heard there are some revision sets and stuff, should i install any of it? i have 3.4E wii

thanks in advance