Sorry, I'm new. So, I didn't see that thread. I'll use that from now on. Thank you though!
So, what you're saying is Boot into RCM, then use TegraRCMGui to boot into Hekete 4.0.0. Then, restore my Nand backup (To bypass the fuse check) and then update to firmware 6.0.0 and re-backup the nand...