I see that it is possible to emulate 3.11 on 2.71, but i thought i would make a guide which is fairly easy to follow, to emulate 3.01 on your 2.71 PSP. Please read the FAQ at the bottem before making posts, chances are it will be one of your questions. Part 1: Installing HEN-D + Devhook for 2.71. Part 2: Installing the 3.01 firmware for Devhool HEN-D. Part 3: Troubleshooting Part 4: Loading PSP ISO/CSO on your 2.71 PSP. //////////PART 1\\\\\\\\\\ 1. http://exophase.com/files/psp/hend.rar Download this, extract all of it to your desktop. Requires WinRar. 2. Copy everything from the MS_ROOT folder onto your PSP. 3. Okay, now delete everything you extracted to your desktop, should be MS_ROOT,checkworks, and devhook. 3 folders. 4. Now, download this. http://www.psp-hacks.com/download.php?id=879 Extract it, and open the HENC-DEVLAUNCHER271 folder, open MS_ROOT and copy only the dh folder onto your PSP. 5. All right, almost done. Now download this http://exophase.com/files/psp/devlauncher271_2.rar Open the MS_ROOT folder and copy the PSP folder onto your PSP, or open the PSP folder and copy the GAME folder into X:/Your PSP/PSP. Simply overwrite the GAME folder on your PSP. 6. All right, almost there download this... http://dl.qj.net/3.01-DevHook-Firmware-Installer-PSP-Homebrew-Applications/pg/12/fid/11615/catid/151 Extract it to the desktop. Copy the 2 folders inside the 301_DH_FW_INSTALLER folder in to PSP/GAME. Now final step. Download http://dl.qj.net/FW-3.01-update-PSP/pg/12/fid/11396/catid/163 And extract it, and rename it to EBOOT.PBP. //////////Part 2: Installing 3.01 for use in Devhook.\\\\\\\\\\ 1. Turn on your PSP, and go to your PHOTO's. 2. Select the HEN-D picture, it should come up with a blue screen then a green screen. If not restart your PSP and try again. If it turns red, just keep trying until it turns green. Once it turns green it will restart your PSP. 3. Once it turns blue then green, go to system settings. If it says 2.71 HEN-D, you did everything right. 4. Now, go to your game section on your PSP and select DEVHOOK0.4X launcher for 2.71. 5. It should come up with a purple box with blue text. Go to firmware and select 1.50. And go to start. 6. You should get some error code. Don't worry, check your system settings. Guess what? 1.50 firmware. 7. Okay, now go to your PSP game directory on your PSP and select the 3.01 devhook firmware installer. Should come up with a black screen with white text. Press X to start. You should see a bunch of text going down the screen. Make sure you have at least 75% battery life. 8. After it restarts your PSP, after the 10 second countdown, everything is all prepared. Just a cople more steps. 9. Okay, download this http://exophase.com/files/psp/devhook051_271.rar Extract it and open the MS_ROOT folder and copy the folder DH51_271 onto your PSP/GAME folder on your PSP. 10. Okay, now turn your PSP on, enable HEN-D mode through the photo. Wait for restart. Now go to your PSP Game directory on your PSP and select DEVHOOK 0.51 BETA for 2.71. 11. Should come up with the black background, purple box menu again. Now go to firmware and select 3.01. Go to start and it should come up with another error code. 12. Go to your system settings and it should say 3.01. //////////TROUBLESHOOTING\\\\\\\\\\ 1. MAKE sure when loading the HEN-D photo, or when you select devhook to make sure there is no UMD inserted. 2. If your having problems, just make sure you follow the guide. If any other problems occur, just make a post. //////////Part 4: Loading Games\\\\\\\\\\ 1. Make a folder on your PSP called ISO. Put your PSP ISO/CSO game in the ISO Folder. 2. Enable HEN-D through the photo. 3. Select DEVHOOK 0.51 BETA for 2.71. 4. Go to file emulation, and select your game. 5. Now, select 3.01 as your firmware. 6. Put a UMD in the PSP (Game UMD, not Movie) 7. Hit start. 8. You should be brought back to the PSP menu with your game. ///FAQ\\\ Q: Will this brick my PSP? A: NO not even a chance as it all runs off of your memory stick. Q: When the screen turns blue then green, do i have to do this each time? A: NO once it turns green, each time you still have to load it, but it will only turn BLUE. Green just means it was installed sucessfully and is only required ONCE! Q: Can i keep HEN-D enabled forever? A: You can keep it on sleep, but each time you fully turn off your PSP, your reset to 2.71 and you have to load it though the PHOTO. Q: What exactly are the advantages of this? A: Well its great for loading ISO and CSO games off your memory stick which require higher then 2.71. Since a lot of the newer games require higher then 2.71! Q: Will this work on my TA-082 PSP? A: Yes! This is what i did it on and it worked for me 100% Q: What about the other motherboards? A: I have no idea since i did this on TA-082. Q:How do i get back to my orignal 2.71 firmware? A: Just fully turn off your PSP Q: Do i need a background to load HEN-D? A: You don't need one, but the chances of your system freezing will pretty much never happen if you have your background. Q: MY GAMES ARE LAGGING WTF?! A: Turn the CPU Speed up in the Devhook 0.51 menu. REMINDERS Have Fun! Midnight. UPDATED: FIXED BROKEN LINK IN STEP 6 UPDATED: The FAQ UPDATED: Added the 3.01 Update to Step 9 UPDATED: FIXED BROKEN LINK IN STEP 1 UPDATED: Some grammer corrections. UPDATED: The WHOLE guide.