I checked the bricked nand dump after a few days of otpless being out with one of the first bricks and reported my findings, but others have already explained in detail the process but essentially otpless purposefully "bricks" the 3ds for a split second, the system resets and magic happens and the system now has a9lh, the problem is when this reset doesn't occur correctly, in this failed state the system remains in its bricked state as the keys are screwed up with no way short of a hard mod of fixing themSomebody with a hardmod could find the solution. It's easy, make a 9.2 NAND backup before the otpless installation and a 9.2 backup after installation. Restore the previous backup after a successful install, until you do the process enough times to brick, then dump the bricked NAND backup with a hardmod and compare the differences to see what is causing the problem.