How do you upgrade your PSP from Version 3.52 to Version 4.05?

i have a psp version 2.82 bought in europe. What is the latest version that i can upgrade to?

does anyone know where i can find the upgrade for 3.03 firmware i cant find it anywhere. also can u tell me instructions on how to install the firmware from my PC to my PSP? tanx ...show more

hi i just brought a new PSP (this is my first PSP ever had i dont know much about PSP) with a version of "5.50 Prometheus" im planning to upgrade it so any advices which version should i upgrade into? i seen version "5.50 Prom 4"...

i want to play psp again. I haven't played in a few years. The version it is running right now is 5.00 m33-3. I see that the newest firmware is already 6.xx. Do I need to upgrade to that in order to play new games and also playing them online? Do i even...

version 2.71 want to upgrade to version 3.50

PSP Firmware filter! Help me upgrade! im on version : 3.52 M33-4 this, i believe, is custom firmware, and i read that i have to downgrade first before upgrading to version 6.20 I am not interested in "custom firmware" anymore, and just need...

I have a version 2.81 It was lower than that and i upraded it using a game. (i couln't play the game cause the version was too low and it asked my to upgrade it) i clicked the button to upgrade it. Now i want to upgrade it higher (to like 3. something...

1. i have a hacked psp version 3.90 m33 but my psp says 3.90 only. when i try to upgrade t says you are on 3.90 not 3.90 m33? what should i do 2. when i format my memory stick i don't get the ISO file on the root of my memory card. i tried to make a...