wifi transfer (no usb required sollution)
You can use PSP-FTPD as well to do what your asking about i believe.
Go to psp-homebrew.eu and search on PSP-FTPD or just under desc search FTP.
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(+.[___]-:-) Phat History: 3.52 > PANDORA > 3.71 M33 > 3.80 > 3.80M33-2 > 3.80 M33-3 > 3.80 M33-4 > 3.80 M33-5 | 
Linear Mode
