Hello Guys i was searching all day for answer. i have R4 SDHC and i want to Boot MS2 beta 12 (stable doesnt work for R4 SDHC for now) on The R4 menu Music/Middle button (where old moonshell is). does someone have idea how to do it? Sorry,if its lame question. OMG. i found how to do it ;] sorry for spam.