I recently upgraded a 3.71 m33-2 to a 3.90 m33-2.
Now, My cousin's psp has 3.10 OE-A and it gives me these game error's when i try to load an iso ( which works fine in my 3.90 btw) & I guess that's because his fw is too old ?

Question:

How do you get a 3.10 OE-A to 3.90 M33-2 ? Like the upgrade path how does it go ?

upgrade from 3.10 OE-A to 3.52 M33 then upgrade to 3.52 M33-4 then 3.90 M33 then 3.90m33-2

thanks

your very welcome