I have a PAL Wii with a wiikey fitted. i managed to get a copy of MP 3 but i am unable to play it

. i have burnt the iso 3 different ways
1. ISO burnt with IMGburn at 2x using ritek dvd = asked to update
2. same as above but wiibrickblocker used on iso b4 burning = black screen
3. same as above but regionfrii used on iso b4 burning = black screen
If i run the 1st burnt disk it asked me 2 update and i really dont want to risk bricking my wii.
Has anyone been able to get this game working on a PAL Wii without having to reboot the system during the update?
I really want to give this game a go but not willing to wait 4 the PAL release at the end of october, please could someone help?