Does anyone have some insight on this? I have a Xbox on 2858 dash and I want to downgrade so 1888 for personal preference. No fuses have been blown since they didn't blow the first efuse until the next dash update.

I have the dash files but want to be sure I downgrade correctly, another site had these instructions

If you have a xbox with any of the dashboard versions (2241,2255,2258,2857 or 2858) then use degraded with a nand dump if your console and click make 1888 filesystem. You can then flash this to the nand.

If I understand no need to Jtag or write xell, just dump the nand, use degraded to build a new 1888 nand and then flash that to the Xbox?