Just received our A3 from Amazon. After making sure it was working at all, I did the update. Since some posters indicated it took quite awhile to update via a direct connection, I decided to go for the ISO update.
Just thought I would mention that the ISO update instructions posted on the Toshiba web site are somewhat incorrect. They state that there are five stages to the update, and that stage five will take about 25 minutes, during which the LED will flash alternate blue and red. That's not quite how it went.
Everything proceeded as indicated. When it reached stage four, it sat there for a few minutes, so I got up and went into the kitchen to make a sandwich. A couple minutes later, at most, I heard a click sound come from the living room, so I went back to investigate.
The CD had been ejected, and the entire process had taken only around 10 minutes or so. I never did see stage five or any flashing LED. I verified that the box had updated to v1.3 and still played OK, as far as I can tell (I am still waiting on a HDMI cable).
For those that are planning an ISO update. The download is only 36 MB, which makes you wonder why the over the Internet updates take so long.
The zipped file "decompresses" to a 36 MB ISO, so I guess they just went with the zip format for the built in error check.
My CD burning software, K3B, claimed the ISO was not valid, but didn't have any problem with burning it. I am assuming it was the burner software, not the ISO itself.
If anyone else who has done an ISO update had a different experience, I would like to hear about it.