Yes, they are not region encoded.
Yeah, of course you can, but when you update ur PSP use a US updater
No, while PSP games are region free, the UMD movies are not. A UK UMD movie will not play on a US PSP.
Yes it should.
i do know that you can play iso's of any region on a us psp slim. if that helps any http://www.myspace.com/yaboyface
PSP consoles and games have regions, but the games are not region locked, you can play a game from the US on a console from the UK, for example. Movies however are region locked and can only be played on a PSP from the same region.
It will work in the Us as there is nothing to stop it from working however you can't run foreign games without a freeloader (confuses psp to think its a us, jpn, etc. allowing foreign games to run)of some sort
Only UMD movies are region locked. UMD games are not region locked, so that would work fine.
Yes you can play those games on a US psp. The only difference is that you use the "O" button to exit to the home screen and to select ok.....And of course its in japanese.
I think those US PSP games are actually Japanese games translated to American English. And all PSPs are japanese, so it should work just fine.
Yes, European PSP games will work on a US PSP, and vice versa. The games are region free, but the UMD movies are not.
There is no India branded psp and the Indian PSP is most likely Japanese (like the one I got from China!) and yes it can play all us games. There is no area lock on most games.
When you buy a PSP game, it will cost you around 15$-30$ US.