I have a unit that uses the RTD1261 chip. It is by a company called Dayfly Tech. I bought it on ebay as a model DY-T60 but it is listed on the Dayfly Tech website as a CS-T60R (hxxp://www.dayflycn.com/Product_Info.asp?productID=609).
By comparing user manuals, it uses identical firmware as the Emperex ME1. I cannot find a firmware version, as hitting display twice (as you do with the me1) is disabled. I tried updating it using the new me1 firmware, and it seems to go through the process fine, but in the end it restarts and is back to the same firmware. The directory structure appears to be the same as me1, right down to the "A simple html+cgi example" web site. All software is installed to firmware, nothing is stored on the hard drive. BusyBox is v1.1.3 (2007.12.17-06:34+0000).
I'm looking for information that might help me to update or modify this thing, as the firmware suffers all the problems as the earlier me1. I'd also like to offer any information I can to anyone interested in this piece of hardware.
PS: Emails to Dayfly Tech regarding firmware updates have gone unanswered.