Gaming Need help with yugioh tag force 4(just got psp)

[isaac52]

Well my pre-hacked psp came today.
And I know absolutely nothing about it, i just REALLY want to play yugioh tag force 4, and i copied the iso onto the mem stick, and it said it couldn't play.

I got this error code.
80020148

Now, I googled and got multiple solutions, most of which I didn't know how to do or didn't quite understand.

One said i needed a PSAR file, and other said i needed to into the recovery mode and disable things, but i didn't understand what it said to disable...

I have 5.50 Gen-A and it's a PSP SLIM

Sorry if there is a solution in one of the stickies, but I just don't see it in there.

 

[BKZ]

Update your psp to 5.50GEN D-3 and you will be able to play the game.

 

[isaac52]

I tried, but it cuts off when it says "now load psp modules from psp"

And i go to system settings:/ system information and it's still 5.50 GenA

 

[isaac52]

Ah wait, i was updating wrong. Retrying now and getting farther.