I have stoped updating apple TV because I forgot my wifi password when asked during update.
After 2 days when I have started appleTV, the iTune logo and appleTV with cable displays on my TV screen and appleTV keeps flashing light.
It seems to me that it is stuck in between updating and unable to connect with my home wifi.
How can I get reset the appleTV with existing version?
Thanks a lot!
Apple TV (2nd and 3rd generation): Restoring your Apple TV
If by 'existing version' you mean an old version, there is no official way to do so.
There is no reason why AppleTV would ask for your wifi password during an update - it should know it alredy if set up correctly.
Retrieving data ...