I'm trying to help my friend downgrade to 1.50 using the newly released downgrader. So far, we've gotten to the point where the firmware is now 3.50HEN. However, the update file in the Game menu is not the x.yz update.
There is a 1.50 update icon, but when it is clicked, it says there is no need to update.
Also, does the 'src' folder need to be copied to the PSP memory stick? It's in the .zip, but not mentioned in the instructions.