Sounds like you've taken some very bad advice.
GH5 does not require 3.3, 3.4 or even 4.0.
3.2 could install wads without cIOS249, you removed that ability by installing 3.4.
Messing around with System Menus is something which you really don't want to be doing unless you have a brick protection solution such as boot2, which you probably don't have (one flash)
If you updated to 4.2 using your Wii's internet connection then you've probably bricked totally due to Wiikey and mix-match of System Menus.
If you cannot access recovery mode with either a savemii or the savemii/gamecube trick then your Wii is not going to be recoverable by anyone other than Nintendo. The unbrick discs will require you to enter this mode.