JB tethered IOS 4.4.2 - updating jailbreak untethered IOS 4.4.4

Hi ,

My AppleTV is with IOS 4.4.2, jailbreak and tethered ATVFlash beta.
But I tried to upgrade the IOS on the menu bar maintenance, updating this
blocked and can not change.
Can I download the IPSW AppleTV2, 1_4.4.4_9A406a_Restore and jailbreak
untethered? Preserve settings and metadata for the applications across this process? (nitotv; XBMC)