Download the new firmware file from the QRP Labs website at http://qrp-labs.com/qmx, unzip it,
and simply drag it into the folder where the existing firmware file version is shown. Or copy and
paste it, however you wish.
The file on the QRP Labs website is a ZIPPED file, please be sure to unzip it to get the .QMX
file before copying it to QMX.
As soon as you copy the new file to the QDX QFU “flash drive”, the QMX QFU bootloader erases
the current program from its memory and installs the new one.
The QMX firmware is 256-bit AES encrypted and this means:
• The encrypted QMX firmware file will only work on a QRP Labs QMX board, it cannot be
installed on any other board, even one containing the same processor.
• No other firmware file will work on the QRP Labs QMX board except an official QRP Labs
encrypted QMX firmware file.
The procedure will vary slightly for different Operating systems but in all cases is just a simple
matter of copying the new firmware file to the emulated QMX QFU USB Flash drive.
The above firmware update procedure works on ANY modern OS because the QFU
bootloader emulates a USB Flash memory stick with the USB Mass Storage Device (MSD)
class, for which drivers are already present.
The QFU bootloader implements a USB device stack (Mass Storage Device class), emulated
FAT16 file system, Flash erase/write, and 256-AES encryption.
QMX assembly Rev 1.00e 65
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