Install PSP Custom Firmware M33

How to Install PSP Custom Firmware M33 ? i am really newbie in this , i dont where to start from if some one can give me a clue .

Requirements:

• PSP Phat or PSP Slim with 3.52 M33 or higher. If you don’t have custom Firmware yet, read this CFW Compatibility Guide to see if you can have it installed on your PSP. If you don’t have custom firmware, read this guide on How to install custom firmware first.
• PSP battery that’s at least 78% full
• Download: 5.00 M33 | 5.00 M33 | 5.00 M33
• Download: 500.PBP | 500.PBP | 500.PBP
• Disable ALL plugins.
• Back up your save files (so that if they get corrupted, you still have backups)

How to install 5.00 M33 CFW on your PSP:

• Extract the 5.00 M33 installer files to your computer.
• Extract the installer file which you have download to your computer.
• Now you need to copy the folder to X:/PSP/GAME/ on the PSP memory stick.
• Download the official 500.PBP.Change the extracted file name to 500.PBP if you have a EBOOT.PBP before starting .
• Copy the 500.PBP to ; X:/PSP/GAME/UPDATE on psp memory stick.
• Now Run 5.00 UPDATE from under Game on your PSP’s XMB
• If it asked for correct idstorage keys Press X .
• Install the official 5.00 SONY.
• All has completed press X Your PSP will reboot.
• You are done ,, enjoy .

Custom Firmware 5.00 M33 has been released. Dark Alex completely skipped 4.02 and released 5.00 M33. Interested in the changes? Read the PSP 5.00 Firmware changes. The most welcome change to 5.00 is the full QUERTY keyboard.

Information from wikihow

For Fat / Phat PSP users You need to have a minimum of 3.52 m33-4 (update no.4 is a must) or higher to install this firmware , this can't be installed on a 1.5 firmware psp . If you don't have it see following the tutorial here. This custom firmware works for both PSP fat / phat (1000 series) as well as the Slim PSP (series 2000) ,but you can't install the 1.5 kernel on a Slim PSP.