Yes I definitely do want to downgrade the CFW, as I have a complete backup images of my old PSP1001 with all my preferred apps and games and stuff, complete with Game Categories plugin, which apparently CFW 6.4 doesn’t like.

CFW 6.4 also doesn’t seem to like half my other mods either, like modding Descent 1.4 to work on anything above OFW 1.5, while I had that working on 5.00 M33-6.

I have so many custom mods on my old imaged backups it ain’t funny, but how, if even possible, can I reflash the NAND and downgrade the CFW to my old backup image?