grand theft auto liberty city stories is a game witch hackors use to get through the 2.01+ firmware
u seem a bit messed up with ur firmwares there are
fully homebrew compatible-1.5,1.0 (if u have this do not downgrade because 1.5 is like the best firmware to have unless ur a rich lil nerd that can afford every game on the market witch requires higher firmware to play the games but there is a patch out witch i do not know much about and it lets u play some 1.5+ games on ur vr 1.5 psp)
downgradable- 2.0 is the only firmware that allows u to downgrade to 1.5 eg if u have 1.51 or 1.52 u upgrade to 2.0 then u get the hack (make sure its not a dodgy 1 because there is trojans out there that delete system files of ur psp and u cannot turn ur psp on its call a bricked psp when there is a psp witch had that virus witch makes it totaly unusable) but there isnt much out there but make sure u get ur downgrading files from a trusty site (like this 1) and if u downgrade i ve been on other forums were people tell people while there downgrading to pull out ur battery and u get the internet browser (THIS IS NOT TRU DO NOT DO THIS IT BRICKS UR PSP) so make sure u leave ur battery still and make sure ur battery wont go flat durring the downgrade
Homebrewable with gta- 2.01(i have), 2.5, 2.6 is undowngradable but the latest hacks that have been realesed(eboots) are made for 2.01+ psps and allow some homebrew there isnt a downgrader currently (hopefully there is some progress in that area) but to have some homebrew on ur psp 2.01+ u need grand theft auto liberty city stories witch is what u need for the hack (eboot to work).
i think u got messed up with ur firmwares because i dunno where u got 7.5 the only firmwares there r is
1.5, 1.51, 1.52, 2.0, 2.01, 2.5, 2.6
if u have 1.5 dont upgrade because go to downloads in our site 98.9% homebrew games homebrew accessories etc is compatible/made for firmware 1.5
hope this helps
