Use this link to download firware flasher.
http://www.triumphtech.com/Driver/Oxford160GB.zip
YOU MIGHT NOT HAVE TO upgrade your firmware.
When I installed the flasher it did not give me any icon on the desktop or start menu. But I found "oxford semiconductor" folder in "program files" folder. The program to run is "fwupload.exe".
This will come with a pdf file, it gives basic instructions.
Basicely when you run that app it will give you 2 choices either to:
1. Update firmware
2. Modify settings
I choose to modify settings, then I choose "advanced options", then I checked "detect non-std devices", click 'ok' to exit the 'advanced tab/window' the click upload, to modify the setting on the bridge.
It will say ready on the status bar (bottom) on the initial main window.
It is REQUIRED TO disconnect and power down the fw device AFTER the upload. About 5-10sec.
This worked for me.
You will notice that in the advanced tab there are other options, you might have to enable them as well. However be very carefull, make sure you power down the device after each flash. I did not do that and it cost me one bridge.
Good luck.
M17