I always use my wii as a test subject before adding anything to my friends wii's but the only concern that i have is why my wii has 3 bad blocks when trying to dump with bootmii. Ive softmodded a friends wii awhile back on 3.2, it had cioscorp, preloader, starfall hacks, etc. anyways i ran anyregion changer to reinstall 3.2 on his so i can get bootmii on there and did a nanddump of his & it came out clean, no bad blocks. on mine, i have 4.1 installed, followed a guide to get rid of preloader & dvdx on mine (including reinstalling the system menu BEFORE running nandclean). When i tried dumping my nand, i had 3 bad blocks which did say it corrected. Just curious to why i would have 3 of them. my wii's running fine, no problems at all.