btw, this is the wrong place to ask the question.
Sometimes using the autoload option to load the eloader doesn't work, you have to make sure you have a load game that is newer then the eloader, wich you can do in two ways (actually just one, but the second is better). Load GTA, but make sure you load it without the MemStick in the psp. Now gta tells you this, and that you cant save this way. Now, when the game is loaded, put the stick back in, load your game and save it again. Should be no problems then.
You could also change the date first, to like, 2015, save the game, and then change the date back(!). this way, all the updates will be older then your save game too, no more problems!

hope this helps :P

EDIT: i read you already tried this, maybe the eloader is in the wrong directory, try using the auto installer, maybe you put the eloadeer in the wrong directory.

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