On this page you can find out your PSPs category. They are not official and have been created by me. You will need to know the category of your PSP to tell if you are able to use certain guides. To use this you will need to know your PSP's system firmware. To find this turn on your PSP, go to the settings part of the main menu, scroll down to system settings and press X. Then scroll down to System Information and the PSP should say "System Software:x.xx". The x.xx represents the numbers that will be there.
Category A
2.0
2.01
2.5
2.60
2.70
2.71
2.80
2.81
2.82
3.03
3.11
3.30
3.40
3.50
3.52
3.70
3.71
3.72
3.73
3.80
3.90
3.93
3.95
4.00
4.01
4.05
Category B
1.50
Category C
1.62IE-A
1.62IE-D
3.02IE-A
3.40IE-A
3.40IE-A2
2.71SE-A
2.71SE-B
2.71SE-C
3.02OE-A
3.02OE-B
3.03OE-A
3.03OE-B
3.03OE-C
3.10OE-A
3.30OE-A
3.40OE
3.40_LE
3.51M33
3.51M33-4
3.51M33-6
3.51M33-7
3.51LE-A
3.52M33
3.52M33-2
3.52M33-3
3.52M33-4
3.60M33
3.71M33
3.71M33-2
3.71M33-3
3.71M33-4
3.72HX-1
3.73HX-1
3.80M33
3.80M33-2
3.80M33-3
3.80M33-4
3.80M33-5
3.90M33-2
3.90M33-3
3.93M33
3.93GEN
3.95GEN
3.95GEN-2
4.01M33
4.01M33-2