iHAP422-98 9

I am trying to find an iHAP422-98 9. I tried pot luck and got a W instead of a 9. Nobody lists the hardware revision. A refurbished unit would have a good chance of being 9, but it could also be a 4, 6, 8, R or something else. Anyone know where I can find one (working), new or used? I want to flash the WL1K firmware (which I found) for ripping CDs. Thanks.