Hi to everybody, I searched all the available forums and tried to figure out how to install a cfw to my psp but i'm really stucked. I bought a Slim PSP that has an official 3.71 fw 2 weeks ago, but still don't know what to do ... After reading so many stuff I ordered a Datel Slim Tool battery, charged it to 100% and used Total Newbie Installer to create a magic stick... Now (I hope) I have an ms with 3 folders in root (kd, PSP and registry) as well as msipl.bin and 371.PBP... I have no idea what are registry and kd folders are for and in PSP folder i have Game folder and in Game folder I have 3 more folders, despertar_cementerio (i guess it has the version 2, size matches), pandora_battery and pandora_battery% folder... folder structure is like this root - ---|kd (folder) ---|PSP (folder) ---|GAME (folder) ------|despertar_cementerio (folder) ------|pandora_battery (folder) ------|pandora_battery% (folder) ---|registry (folder) ---|371.PBP (22.5 MB (23,647,653 bytes)) (file) ---|msipl.bin (236 KB (241,664 bytes)) (file) now my questions, * do I need all these folders or do I have to delete some of them? * is this the right structure for an magic ms? * as i understood it's best to get a copy of nand before installing something new, is it made by pressing  (i assume it's a square) before pressing X to install cfw, and do i have to make a copy that nand file from ms to my comp before doing anything? * do I need to know anything else sorry for my questions but I'm really confused, and i promise I will make a guide of my installation if it's ok (PSP slim ofw 3.71, datel slim tool battery, sony memory stick pro duo 2 gb) thanks for any help.