downgrading psp?

Question

i have a 2.6 version psp and i want to downgrade it to 1.5. i recently bought the gta:lcs to downgrade it but apparently it says i need one of the older versions of gta. also my friend says that i dont need gta anymore since the firmware is something like 3.0 now, and all i need is a umd for it to read. but the downgrade patch i used i think only works with a gta. i've heard that i have to upgrade to 2.71 then downgrade to 1.5 because that doesnt need gta. any help?

Answer 1

It might be easier to just reinstall the 1.5. check your manufacture's web site to see if that download is still available