I only signed up here so i can share this iformation with you…
like everyone does upgrades there packages…remotehd update made my atv2 show blank screen on 4.4.3
if this has happened to you this is the fix
use putty and ssh in and type commands and hit enter after each command
“this removes”
apt-get remove remotehd-atv2
reboot
ssh back in again
“this downloads older version that worked”
wget http://www.remotehd.com/Downloads/ATV/FireCore/remotehd-atv2_4.3.6_iphoneos-arm.deb;
“this installs it”
dpkg -i remotehd-atv2_4.3.6_iphoneos-arm.deb
reboot
hope this has helped people…RemoteHD shouldnt release non stable product until fully tested