Hi,
My reader locked after updating firmware with Flasher and it was hanging on starting up screen. I've tried everything (btw. thanx for great info) but nothing helped. After half hour trying I was able to get it to Updating firmware screen (using 10 reset technique) but updater couldn't get my Reader connected.
And here's a trick that saved my life - YOU MUST USE ORIGINAL SONY DRIVER WITH UPDATER
Hope it helps someone