I have been trying to get devhook v0.43 to boot UMDs all night but it won't even boot v2.60 firmware. I had no trouble extracting & decrypting the firmware off of a v2.60 PSP but I have not been able to get Devhook to load v2.60 on my v1.50 PSP.
So, I have the F0 and FD folders from the extraction and decryption process but have had zero luck with getting the v2.60 firmware set up with the Devhook firmware installer. If anybody has any insight please let me know how to accomplish this.