How do i install 4.00 on 3.95 any help is great

[Trippy Whale]

i have ofw 3.95 and i want to put on 4.00 so i got 4.00 from dark alex but when i put it on my psp it says its corrupted any help is great especially a tutorial

[ra1n]

1st off you need to make a pandora battery and a magic memory stick (just use the search)

so once you do that you should be 3.71 m33 or 3.80m33 or somewhere around there

that grab the file you downloaded from dark alex

and follow the readme instructions sure say something like "download official sony eboot and rename it to 401 or something like that and put it in the memory card's root

then go in game and run the 4.01m33 updater.
that should be about it