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I can confirm 100% this board works.
Flash it wit hthe teency 1.0 cjpc hex file and your good to go.
This USB Dev board can also be used to hack cable modems but I wont get into that here
here is a pic of the BlackCat in action.
Specs of BlackCat USB:
Fast 16MHz CISC processor
16KB programmable memory
2 DIP switches for mode changes
Upgradeable firmware over USB
On board reset button
Universal CFI Flash programming support
USB 1.1 / 2.0 compatible
Compatible with Popular Cable Modems Such As the Motorola SB4200, Motorola SB5100, Motorola SB5101, RCA DCM315, and the Scientific Atlanta/Cisco DPC2100 In addition support may be added by the end user for other EJTAG compatible flash devices. Just Added: SPI Flash Support! Now you can flash SPI devices with the Blackcat USB including the SB6120, and SBV6220 And Now The PS3!