I have been having the same issue with my Epson ET-4760. In reading down through the thread I found where someone posted a solution that has worked for me, Here is what I did:
Turn off the printer
Shut down the PC (mine also happened to also have a BIOS update)
Leave the PC off for at least 2 minutes. (doing a restart does nothing)
Power the PC back up
Once the PC is up turn on the printer