HOW DO YOU INSTALL PSP CUSTOM FIRMWARE 5.00m33-6?

I CURRENTLY HAVE CUSTOM FIRMWARE 5.00m33-4 AND I WANT IT TO BE 5.00m-6 SO I CAN UPGRADE IT TO 5.50GEN-D THEN TO 5.00GEN-D2 SO I CAN PLAY TALES OF VS SO PLZ HELP AND IF YOU NEED ANY ADDITION INFORMATION HERE IS MY E-MAIL ADDRESS krimsonjones@yahoo.com