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9.1 Updating the firmware 57
From a computer via RS232 port
It is possible to transfer a new firmware to the digital receiver
from your computer connecting them with a RS232 cable. You
need TFD-Down, the firmware transfer utility for this, which
is available at the Topfield web site, http://www.i-topfield.
com.
To update firmware with this method, perform the following
steps:
1. Download a new firmware applicable to the digital re-
ceiver from the Topfield web site.
2. Download TFD-Down from the Topfield web site.
3. Plug a RS232 cable into the RS-232 port on the digital
receiver and the corresponding port on your computer.
4. Turn on the digital receiver.
5. Run TFD-Down.
How to use TFD-Down is as follows:
1. Press
✄
✂
✁
Find button to select the new
firmware file.
2. Press
✄
✂
✁
Download button to start the file
transfer.
3. Press
✄
✂
✁
Stop button to cancel the file
transfer.
4. Restart the digital receiver.
From another digital receiver via RS232 port
It is possible to transfer a new firmware to the digital receiver
from another same digital receiver connecting them with a
RS232 cable.