Thanks a lot for the updates!
@mrthong - Here's my guide but its for UPMSv2. There shouldn't be any difference.
http://www.psp-hacks.com/forums/viewtopic.php?id=122613
DCv3 is Despertar Cementerio v3. DAX's unbricker that installs 3.71 M33 and it's Sony counterpart.
DCv4 is Despertar Cementerio v4. Same DAX unbricker but it installs 3.80 M33, and the counterpart.