Last week, we reported that another PSP firmware upgrade, version 2.01, was in the works after enterprising software experts found a way to hack 2.0 and downgrade the firmware to a working version of 1.5. The fun is over, for now. There's no official U.S. download for the 2.01 upgrade, yet, but it is available on the Japanese site. U.S. user can upgrade via "Network Update," not that you really want to, though.

Sony Releases PSP Firmware 2.01 [GameSpot]
Another PSP Firmware Update Incoming
PSP Firmware Downgrade Available