wanting to isntall AR magnager for wii on system menu 4.2U but not 100% sure

i did magnaged to install the app found on a YouTube vid and the emudesc forums (ill add both links to the bottom line of the post so please bear with me ) im doubtfull of installing a vital part of this, the MIOS patch or the CMIOS patch, what are the risk of isntalling the patch?, can it brick you wii, my wii is indeed hard modded, it has a chip on it, not sure which model of chip it is, then if it bricks my wii can any one post the tools to bring it back from the dead? since im not sure there are many "official" nintendo stores around the country so help please?

links of i was talking in the beggining:

http://www.youtube.com/watch?v=sQB1NfpG-VI

and

http://www.emudesc.net/foros/wii-scene/161764-action-replay-de-gamecube-homebrew-channel.html