Connect it to your PC with a USB cable, and copy it across.
You put games in the ISO folder.
download them on the computer then sync them on to your psp
plug your psp into your PC but don't use manager put the firmware into the iso folder
on the root of the memory stick, there should be your regular PSP folders, as well as "seplugins" and also "ISO". Inside the ISO folder, you can put PSP ISO games, aswell as games with the CSO extention
iso and cso can either play in psp.
ISO is the format in which the games of the PSP is saved as.Most of the PSP games are in ISO or CSO.So if you search for PSP ISO in a search engines, those that came up are probably PSP games for downloads.
If once you download it, if it comes in a ISO file then you need to put it in the ISO folder in the root of your memory stick in the ISO folder you can ask more questions here http://sickmods.oxyhost.com
To add games to the Prometheus ISO Loader, first, ensure you have the ISO files of the games you want to load. Place the ISO files in the "ISO" folder on your PSP's memory stick. Then, launch the Prometheus ISO Loader from your PSP, and it should automatically detect the games in the folder for you to select and play. Make sure your PSP is properly configured and has the necessary custom firmware installed to use the loader.
You need to have a custom firmware to put iso/cso games. 1. put your psp in usb cable. 2. make a folder name " ISO". 3. go to Websitef to get your games then put it in the folder. 4. exit out then press select the you go to the 4th row the go to the secong last and put it no umb sony. 5. then you go to ur game folder and there you go ur iso/cso.
You will have to hack your psp ( Cracking ) That depends on which version psp you are having and what motherboard you have and you must check that your motherboard is crackable. it is very dangerous to do it so give it in the shops in which they crack PSPs. After cracking ( After putting a firmware ) your psp will have more folders ( ISO,Seplugins and more) So you have to put the games in The ISO Folder. The Game formats are ISO and CSO. Don't crack by yourself. But if you have experience in Cracking, Then do it...
*.cso and *.iso are the formats of the psp games
PSP roms are in ISO format. They are in the ISO 9660 standard. However, it can be compressed to CSO, DAX, or JSO, proprietary formats developed for the PSP