This quick tool will help make sure you choose the right version custom firmware for your PSP. It's generally recommended to be on the 6.XX channel of updates, mostly either 6.60 or 6.61.
For PSP 2000 models, you can find the date code in the battery compartment sticker with the battery removed. This will be two characters written above the serial number with the words date code next to them.
6.60 and 6.61 permanent custom firmware available!
Your PSP 1000 is capable of installing permanent custom firmware without the need for Infinity. Please check out our guide on installing custom firmware here!
6.60 and 6.61 permanent custom firmware available!
Your PSP 2000 (first generation) is capable of installing permanent custom firmware without the need for Infinity. Please check out our guide on installing custom firmware here!