The jaiklbreak of 5.0 firmware is (currently) a tethered jailbreak which means that any time you lose power or do a hard reset you need to connect the ATV2 to your PC/mac via USB to complete the boot process. This in effect means that the ATV2 normal place pf use must be close to where your PC/Mac is located or you must have a notebook.
Help! I have this version, when the restore is complete, I receive the message saying it was successful, but the ‘Done’ button is greyed out. I quit seas0npass and reopen, when I try to boot tethered and receive a message -