My O3DS sysNAND is on 4.2 and i have RxTools 3.0-b8. I've installed a DSi game (Shantae: Risky's Revenge) on sysNAND to play it, i execute it and nothing happends (i've executed it on emuNAND since on sysNAND doesn't appear the app), and it wipe out my MSET exploit. I tried to recover it by following these steps: -I've downgraded the MSET from RxTools 3.0-b8 (i just used the option just in case, it tells me that there's no need to downgrade the MSET) -Installing FBI installer 1.4.9 to install the MSET ROP -Checked the options before installing the ROP: <RxTools 3.0 4.x> -Install succesfull -MSET profile still broken. I execute it and both screens remains on gray color, after that trows error and the 3DS reboot itself. Seriously i don't know what happend, i think that the ROP didn't work, but i don't want to re-install or install another in case of some error. I'm considering the option of formating the sysNAND to recover the ds profile and re-install the exploit, but i've heard that could cause a brick since it has a custom firmware. So, what should i do at this point? I need that MSET before getting Coldboot.