how in hell wouldn't you be able to watch movies on your psp if you upgrade??
Anyway, you don't have to worry about updates anymore and devhook either, Since now there exist Custom Firmware, created by Dark Alex (From now on known as your God), Custom firmware lets you enjoy everything you have on 1.50 version but in the latest firmware
So, install 3.52M33, then 3.52M33 update 4, then you can go to 3.90M33 and put the 1.50 kernel addon
just follow the readme files, they'll tell you everything you need to do (is not like rocket science... or devhook)
For more detailed info check the wikipedia link on my sig
and yeah, custom firmwares are in www.dark-alex.org
and the required update files can be downloaded from www.psp-hacks.com
Have fun
edit: after you're done with this, use the option on psp that says format memory stick (make a backup first though), and it will create all the folders you need
Bookmarks