ATV2 "Device not supported by seas0npass" HELP!

I purchased an already tethered jailbroken ATV2. Downloaded the latest version of seas0npass. Followed all instructions, but after selecting the ispw button and after it appears to download and load everything (as instructions show) it gives me an error say "device not supported by seas0npass". I have confirmed I have an ATV2. Not 100% sure on the iOS version though. I've read about saving "blobs", but I have no idea what that means. Can anyone help?