It depends, If you want to risk messing up your psp to play backup games, go ahead.
Check psp-hacks.com for info on what to do.
No.
No, you can't.
The thing that powers the PSP. It also enables you put put Custom FirmWare on the PSP
most of the time
I'm not sure what you mean by "the mod" but I think you may be referring to a "custom firmware". If so, you can safely format your PSP's memory stick without removing the custom firmware. This is because the custom firmware is stored in the internal PSP flash memory, not on your memory stick. If you want to remove the custom firmware, you will need to just install an official firmware onto the psp. The easiest way to do this is to put in a PSP game that comes with a firmware upgrade and choose that option. Then I would recommend having the psp do a Network Update.
No only if you put cfw (custom firmware) on it by hacking.
custom firm ware is a modification of the psp that lets you use cheats,put ps1 games in the psp ,and much more. you can get custom firmware by makeng a Pandora battery and a magic memmory stick.(for psp 2000,and older)......for psp 3000 you have to get hue or somthing like that .
Recently you can not make your psp with a custom firmware with out Pandora, Think about buying a Pandora battery on eBay, they are cheap.
There's a chance it will break it, it allows you to downgrade your firmware so you can put on custom firmware, this is ILLEGAL. Also, if you do it wrong it would destroy your psp
It's possible that the games you are downloading from PSP Blender are either incompatible with your PSP model or are not genuine copies, resulting in corrupted files when transferred. Try downloading games from a reputable source or ensuring compatibility with your specific PSP model to avoid corrupt files.
If you have official firmware you can only play demos If you have Custom firmware you can play all kinds of games So You Don't have custom firmware
Accualy you can add as many home made apps made by the gaming community called homebrew,all you have to do is put custom firmware on your psp.