which version of atv flash?

Legacy 1st gen Apple TV
1

how can I tell which version of atv flash I have installed on my AppleTV?

i installed a couple of weeks ago. I am assuming it’s the newest version, but am not sure.

2

aTVFlash updates seamlessly through the Maintenance → Install Extras menu.

So even if you initially installed 4.0.6 (or older) you would now have 4.1 if you have taken all updates in the Maintenance → Install Extras menu.