hes probably using a different card. hes probably using r4i sdhc 3ds like me. u are using the original r4. they are both acting differently. ive been trying to find a fix for the r4i sdhc 3ds, but no luck. everyone else is welcome to help
ive tried everything, i dont think that the 2ch patch helps r4i 3ds with the stat/team change freezing. as of now i guess it isnt working until another patch comes out