This weekend an anonymous PlayStation 3 developer has made available a MultiMAN v04.01.00 DEX Update Mod (20120204) PKG for those who own PS3 Debug / Test consoles and wish to enable game back-ups on it.
Download: multiMAN v04.01.00 DEX Update Mod (20120204) PKG
To quote: You need to install the mmCM v04.01.00 released yesterday first on your DEX, then run this UPD PKG to get multiMAN to now run & play games from your HDD
This makes the mmCM function as normal multiMAN on DEX machines running 3.55 just like on CEX, but of course without the Cobra exclusive functions!
Not much more can be said about this release, but it seems to work on QA flag'ed CEX machines also thanks to LV2_Loader and the previous dexl0ve posting