Hey-- made an account just to ask this question.
So, I'm currently running a copy of RajNX on stock FW 5.1.0. (For pirating Smash early.) I had updated to 6.1.0 prior, so i had to backup my NAND and force backdate and all, won't boot w/o TegraRCM, etc.
I was wondering if it would be feasible...