After a couple evenings and some very helpful people, I have a debug working great, on 3.55DEX w/OOS. My first few attempts to create a MFW did not work, but I updated to the latest MFW builder
thanks to a tip by
. <3.60 backups (mostly) load on 3.55 through multiman, and OOS works! Now I can update to 4.10 (or 4.20 if I can find it) then use the DG PUP to go back to 3.55 or lower, re-install the OOS PUP, flash my CEX nor image back if I want/etc... I like my PS3 again. Thanks to those who figured this out (even if you wanted to keep it for your greedy little selves) thanks to the guy who leaked it (you 'get it' when it comes to console scenes) and even if us poor end-users get locked out of future FW updates, this is 1000000% better than where we've been stuck for the last 18 months.
*goes out to buy a few 3.60+ games*