The 8gb & 16gb both have a note on the packaging saying it works with the PSP, but confusingly on the 16gb it says it must always be the latest firmware for it to work. Not sure what will happen if it's not... your card gets locked out? I haven't bought one cos I'm wary about that.
The 8gb has a note saying it will only work at a certain firmware and above (3.xx) so not sure how that will work for custom firmwares (if you use such a thing)
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