when to install aTV flash?

Do i instal aTV flash before, or after the tethered boot?
I'm not realy seeing the "Manage Extras" feature and don't even know if my apple TV is even jailbroken to begin with.

I'm soooo confused and I'd appreciate all the help I can get.

Here we go:

1 Jailbreaking

2 Tethered Boot

3 Connect Apple TV to your WiFi

4 install aTV Flash (over WiFi from your Computer)

VoilĂ ! And good luck!