well u can change whats on ur psp from ur psp with certian homebrew and to get files from your computer to your psp u can use the mph firmware loader to make a browser for 1.5 and look up on something called psp portal this lets u put stuff on the computer in a certian spot and u can get it from ur psp if u have a wireless router otherwise there is nothing out so far for gta on 1.5 i will try to post a link for the psportal if u want

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