I figured to install rxtools, booted rxmode on sysnand, applied rxinstaller.bin, but dsprofile exploit is not working, it just gives me error and the 3ds reboots. Not lucky, next time
Try this installer. (fixed by soarqin)try rxTools_2015-09-01_17.45_f6c7d7d_unstable
but rxinstaller.nds not work