hi all gurus and sifus,

Need your help here,i bought a 2nd hand PSP V1.5 sometimes ago,the problem is this,whenever i quit a game (im playing *ahem* games) and return back to the menu,when i have swtich it back to V2.71 and choose another game,the game wont start,it keep going back to the 'Return to V2.71 screen' so most of the time i need to switch it off and turn it on again then only can play other games.

Y is this? is my Devhook corrupted ord? Where can install the latest version 1? or are there any easier solution?