As with any work in progress, jas0nuk's decryption application PRXdecrypter has been on the receiving end of upgrades. In fact, the homebrew developer has recently released a new version of the software, dubbed PRXdecrypter 2.0, for your Sony PSP.

• Fixed bug where pressing X for too long caused it to try and decrypt multiple times resulting in a huge log of error messages
• Rewritten method of loading files for RLZ decompression in preparation for 2.0 which will have KLE decompression
• Improvements to the logfile
• Tweak to enable 1SEG.PBP decryption
• More keys added (certain apps which run in pspbtcnf_app mode)
• Fixes to prevent crash on 3.80

NOTE: 3.80 has removed the RLZ decompression routines and replaced them with KLE. At the moment I have no information about the KL3E/KL4E NIDs and have therefore left them out of this version

RLZ still works fine in 3.71 and below, and in 1.50 where you can load sysmem_rlz.prx to enable it as usual

• Working KL4E decompression in 3.80/3.90
• Press LEFT on the D-Pad to signcheck all ~PSP encrypted files in the ms0:/enc folder
• Totally reorganized the source code. Everything is now in one build. Internally the code is slightly different for 1.50, 2.71~3.71, and 3.80 .All functions are now loaded from prxdecrypter_0xg.prx (1 = 1.50, 2 = 2.71~3.71, 3 = 3.80 )
  
• At the moment, RLZ decompression is available in 1.50 if you put a decrypted 2.71 sysmem_rlz.prx into ms0:/enc
• RLZ decompression is natively available in 2.71~3.71 but NOT KL4E decompression
• KL4E decompression is natively available in 3.80 but NOT RLZ decompression (as they removed it)
• So, depending on what you want to decompress or decrypt, you may need to run it from a different firmware
• KL3E decompression is NOT yet available, so you can't properly extract the 3.80 reboot.bin
• Made the options a little more organized with a few dividers, and changed keys to make more sense
• Press SELECT to switch between the normal output folder (which overwrites your input files) and "ms0:/dec" so the input files are kept separate from the output.