As many of your know, Eliab and I have been traveling the country calibrating many of these displays. During our procedure we have been updating the firmware, when necessary, in order to achieve the increased functionality/stability that comes with an update. That said, I had my first 'software update' failure occur yesterday. The set recognized the firmware, asked if I wanted to update it, and we continued. At about 45% through the update process, the display had an error message stating that the USB device could not be found, it then went black for approximately three minutes and turned itself off. This was unrecoverable.
The USB drive has been checked and verified to be ok. This particular drive has been used on other HL-T displays to update the firmware as is. Please be aware that even if you have used the drive before to update the firmware on a display, it could still fail - updating firmware is at your own risk.
Anyhow, I just wanted to give you all a heads up.