Originally posted by hexitnow: -------------------------------------------------------------------------------- This is an easy way to install 3.01 with devhook .51 without any troubles. No messing with flash1. No messing with extracting the data.psar file. 1.) first we will need the installer for devhook. Download it from here - http://dl.qj.net/3.01-DevHook-Firmware-I...11615/catid/151 2.) now we need the 3.01 update. download is here - http://www.psp-hacks.com/download.php?id=934 3.) last we need to download devhook .51 - http://www.psp-hacks.com/download.php?id=933 4.) extract the devhook firmware installer and copy it to ms0:\PSP\GAME. 5.) extract and place the 3.01 update in the root of your memory stick. 6.) extract devhook and put the launcher files in ms0:\PSP\GAME and place the DH folder in the root of your memory stick. you can also simply copy and paste it but in the guide that comes with the installer states you need the fbm folder but I found it runs fine without it. 7.) Start the devhook firmware installer and press X when it prompts you on screen. It will now install all the firmware files for devhook. No more BSOD. When it's finished you can now boot devhook with 3.01 support. On a side note it seems that some people (including me) have X and O buttons swapped on their psp's when in 3.01 In doesn't happen to all people but here are the registry files to swap them back to their original places. http://rapidshare.com/files/6249912/Button_Swap_for_3.01.rar.html Place these files in the ms0:\dh\301\f1\registry. VOISKO JOKU SUOMENTAA TOTA TAI ONKO TOTA JO SUOMENNETTUNA SAATAVANA?? PLS HELP!!?? En tajuu..