External Hard drive no longer recognised

After updating to 3.6.3 my external Hard drive which was working perfectly is no longer found by the ATV flash.
Any suggestions?

Also, my system is still saying 3.6.1 after both .2 and .3 updates. I’m sure it has updated to 3.6.3 because I now have the Air Mouse application.

Have you tried rerunning the patch on the Apple TV a second time?

THanks mate. Works better than ever now.