As Dean said at crunch.. the main point of this is you can load your old 3.55 backups easily on 4.20. It modifies the EBOOT on the fly and even converts them back to normal for 3.55 use.
You can play your old games.. new 'backups' that have updates + 4.20 retail disks.
Newest showtime, RetroArch and most the important mM functions work.
DEX 4.20 isn't as much of a hassle to be on.
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