User Manual

BTHF304 User Manual
. 15
3. Upgrade Software
This device supports self software upgrade via USB port. This unique feature allows you to always get the latest
software. Such software upgrade may help you to resolve some compatibility issues related to new handset models
entering the market. Our upgrade software may also include product feature and performance improvement which
you may want. Detailed operation procedures are as follows:
1. Download software upgrade tool ‘DFU Wizard’ from our website and install it in your PC.
2. Download the latest version of software for BTHF304 from our website (Such as BTHF304-1205.dfu).
3. Connect the handsfree with PC using the USB cable coming with the package. (In order to update the
software successfully, it is better to unplug other Bluetooth equipment from the PC USB port at the same
time.)
4. Press
button and call button simultaneously to enter the software upgrade mode. If enter the
software upgrade mode by misoperation, you can double press
button to exit this mode.
5. Install the USB driver in your PC, if it is the first time of your PC to update the software for your handsfree.
(The location of the USA Driver is the folder ‘DFU Wizard’ which you have downloaded, and the file
name is CSRBlueCoreUSB.inf. The driver only works on Windows 2000 and Windows XP operating
system currently. If your PC used other operating system, it will be unable to update the software.) Note
that, even if your PC has been installed with other USB driver, you must use the provided USB driver to
update. Otherwise, your PC might be unable to update the software for your handsfree.
6. Continue to update the software by executing tool ‘DFU Wizard’, and click ‘Next’ to carry out
sequentially according to the suggestions.