You will need: A PSP with 5.XX GEN firmware Prometheus PRX Module v0.4 eDecrypt 1.4.0 WQSG UMD r31 dnas decrypter (for KHBBS) PBP Unpacker (for unpacking PBOOT.BIN) PSPCipher (for PBOOT.BIN) ISO PSP Game (not CSO) Memory Stick Pro (preferably 4GB+) Card Reader/USB Cable Download this pack and copy the PSP and enc folder into the root of your memory stick. Basic Instructions: 1. Backup or download your ISO file. Backup options: UMD Dump PRX, ISO Tool, PSPFiler, UMDGen. Etc. Download options: Torrent(!), www.pspisoz.com 2. Run WQSG UMD and open up the ISO. Navigate to ISO:/PSP_GAME/SYSDIR and right click EBOOT.BIN and export to the enc folder at the root of your memory stick. 3. Run eDecrypt and press X. 4a. Exit to the XMB and rename the EBOOT.BIN file in the ms0:/enc/done folder to EBOOT.OLD. 4. Go back to WQSG UMD and drag EBOOT.OLD into SYSDIR. Drag EBOOT.BIN and prometheus.prx from the prometheus folder into the ISO. 5. Close out of WQSG UMD and try out the ISO. Note that varied or extra steps are needed for certain games and PSP 3000 users. PSP3000 Users: Varied step 5: Go back to WQSG UMD and drag EBOOT.OLD into SYSDIR. Drag EBOOT.BIN and prometheus.prx from the PSP3000 folder. Metal Gear Solid Peace Walker: Varied step 5: Go back to WQSG UMD and drag EBOOT.OLD into SYSDIR. Drag the contents of the MGSPW folder into SYSDIR. Drag the EBOOT.BIN and prometheus.prx files into SYSDIR. Do not touch the folder, I have no idea what it does. Kingdom Hearts BBS: (NEED ~1.2GB free space!) Extra Steps: Go into WQSG UMD and go into ISO:/PSP_GAME/USRDIR and export BBS1/2/3.DAT into the root of your memory stick. Run dnas decrypter. It will be just a blank screen, nothing more, and will be decrypting the BBSX.DAT files for around 10-20 minutes. It will automatically exit to the XMB when it is done. You will see new BBSX_DEC.DAT files, delete the the old BBSX.DAT files and rename the BBSX_DEC.DAT files back to BBSX.DAT. Drag them into ISO:/PSP_GAME/USRDIR and wait five minutes for WQSG to overwrite the old files. It will freeze the program until it is finished. Varied step 5: Go back to WQSG UMD and drag EBOOT.OLD into SYSDIR. Drag EBOOT.BIN and prometheus.prx from the KHBBS folder. Games that are encrypted using PBOOT.BIN/PBP(?): New Instructions: 1. Unpack PBOOT using PBP unpacker. 2. Take out DATA.PSP and PARAM.SFO. 3. Rename DATA.PSP to EBOOT.BIN. 4. Copy EBOOT.BIN to ms0:/enc and run PSPCipher. Decrypt the game and exit to the XMB. 5. Do steps 4a-5. 6. Take the PARAM.SFO from PBOOT and replace it with the one in the main ISO. 7. Close out of WQSG and try out your ISO on your PSP. 5.03/5.50 Prometheus Installation Find instructions here. Requires: PSP w/ 5.03 GEN-C OR 5.50 GEN-D3 Firmware This is an automatically patching add-on to 5.03 GEN-C/5.50 GEN-D3. It removes compatibility with some older games, but it makes newer games work properly. Here is a semi-full list for 5.03 GEN-C: Code: Working ISOs: Kingdom Hearts: Birth by Sleep Metal Gear Solid: Peace Walker Toy Story 3 EVA God Eater God Eater Trial Version (DEMO) YSF Tekken 6 Modnation Racers Flames Alliance Pro Evolution Soccer 2010, the challenges of the blue warrior Prince of Persia New Games Not Working: Patapon 3 DEMO Old Games Not Working: * Tekken 6 * Gundam vs Gundam * Phantasy Star Portable 2 * Naruto * J-League Pro Soccer Club o Tsukurou 6 Pride of J * Naruto Shippuden Narutimate Accel 3 * James Cameron Avatar The Game * Phantasy Star Portable 2 * R-Type Tactics II Operation Bitter Chocolate * Bleach Soul Carnival 2 * Battle Spirits Kiseki no Hasha * Yamada * ETC.