The next step is to get the MHP30 into DFU "Device Firmware Update" mode. This is achieved by holding the "A" button on the back while plugging the MHP30 USB into the computer you plan to use to do the programming with.

The display will show "DFU" and a number (see image above).

After a moment, the computer should show a small USB storage device.

Now, copy the MHP30 ".hex" file to the small USB storage device. You will see the progress and when it is finished, the MHP30 will reboot, which causes it to disconnect and then reconnect.

You know the firmware was installed correctly if you navigate to the small USB storage device and the file extension has changed from ".hex" to ".RDY".

If you see the extension ".ERR" then the update failed. The first thing to try is to just copy the ".hex" file over again. If it still does not work, then the recommendation is to follow the manufacturer instructions for installing the original firmware.

To exit out of DFU mode, just unplug the MHP30 from the computer and then plug it back into its USB power supply!