Can't create IPSW from file

I have the latest firmware 4.4.3 installed on my ATV2 and I’ve downloaded the 4.4.3 Restore File, but after holding the option key & clicking on “Create IPSW” in Seas0npass (Mac Version) and selecting the downloaded IPSW file nothing happens. There is no custom firmware created.

What am I doing wrong?

I am getting this too. Downloaded the latest Seasonpass and " AppleTV2,1_4.4_9A334v_Restore". I start seasonpass, hold down shift and then create IPSW and select the restore file.  Seasonpass then just closes. Ive closed Bitdefender and tried on two different pc’s.

Same issue here!..any solutions?

The file download link here is different to the one I have, hopefully this will resolve

http://blog.firecore.com/5606

Just tried the new sw, no change ATV 2 still reboots in 4.3

Worked for me. Teathered boot and installed aTV. Took two goes as I got an error firat time, Restored ATV2 via itunes then using seasonpass.