2. Which one of these are absolutely necessary for a PAL console ? I see cIOS 30 is for NTSC , cIOS70 is for Korean...
Why do you install ios16, cIOS30, cIOS36, cIOS50, cIOS60, and cIOS70?
Ios16 enables the Pink Fish disk to run if needed, which can do a few useful things.
cIOS30, when installed prevents lu64 wii from bricking if they install 3.2, if cIOS30 is not removed in the process.
cIOS50 prevents the stupid upgrade downgrade brick, same with cIOS60.
cIOS70 prevent the 003 error found on the Korean wii. Version was changed to 54321 do discurage their uninstallation.