Looks like the new Japanese firmware for the PSP, which includes the built-in web browser may work on an American PSP but will most certainly void your warranty. (July 27th can't come soon enough!) Rather than post their first shots and steal their glory, we'll just point you over to Akihabara News with screenshots of the new web browser on PSP.
Akihabara News - Firmware V2 for PSP, IT WORKS !
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