PSP firmwares lower than 2.81 cannot use cards larger than 4GB, while firmwares higher or equal to 2.81 can use the 8GB card. However, there has been some confusion as to whether 8GB cards can be used on custom firmwares 3.02 OE and above; though they are modified versions of firmwares higher than 2.81, they use the 1.50 kernel.
So, in other words, these firmwares can use 8GB sticks -
- 2.81
- 2.82
- 3.00
- 3.01
- 3.02
- 3.03
- 3.10
- 3.11
- 3.30
- 3.40
- 3.50
- 3.51
And these cannot use 8GB sticks -
- 1.00
- 1.50
- 1.51
- 1.52
- 2.00
- 2.01
- 2.50
- 2.60
- 2.70
- 2.71
- 2.80
And any firmwares with anything on the end of their version number (OE, M33, LE, etc) might work with it.