hi, a friend bought a new psp fat yesterday at gamestop, and by store policy they have to upgrade to the latest firmware, so its at 3.80, and i was trying to downgrade it using the Pandora easy installer found on this forum. the steps i did were exactly as they were specified on the forum, but just in case i did something wrong, heres what i did.
1) download from the link provided
2)formated my memory stick using the mspformat throught the CMD prompt, also formated from the psp xmb option.
3)installed the pandora easy installer.exe straight into my psp (drive G), when i tried to run the Battery Creator, the game wouldn't load, so i had to make a Game150 folder and cut/paste the pandora_battery files and the pbfirm_install to it.
4) went into my psp and executed the battery creator. Everything went smoothly as it would any flasher. said it flashed some files successfully and went back into the psp home
5)i Hard reset, took out my memory stick and the battery, then inserted the memory stick into my friends psp, then the battery.
6)the green light turned on, and the screen stayed black. i hard reset and tried again, but still with the same results. so i took the mem stick and battery out and tried it on my psp, and it wouldn't turn on ether.
I'm not sure if i did a step wrong, or what. Is the battery unusable now? i read somewhere that sony may have made the newer battery packs pandora-proof, but i didn't use a new battery (old batteries are made in china, the new ones are made in japan), i used my old battery that came with my psp (i bought on release date). I did buy a new battery but that was going to be the backup origninal and MY battery would be the pandora.
sorry, i just noticed i said he bought a new psp, it was used. the mobo has the gold letters on the right side when ur looking at the back of the psp but i'm not sure if thats an issue anymore...