Firmware Update - microHAM DXP Manual

DXP firmware is updated by loading it from an USB FLASH ("thumb") drive:
1. Copy the update file dxp.upd to the root directory of a USB FLASH drive. Don't place the update
file to any subdirectory. Don't rename the file.
2. Disconnect the USB cable powering DXP.
3. Push and hold the RIGHT (RX) button, then connect the USB cable powering DPX. The POWER
and FSK LEDs will light and the red RX AUDIO LED starts to flash. The display will remain blank.
4. Insert the USB FLASH drive to the USB-A connector on the back of DXP. TX AUDIO, the PTT
LEDs will light briefly while the update file is getting recognized and loaded into DXP. This
process should not take more than a couple of seconds. The new firmware will be started
automatically.
5. Remove the USB FLASH drive from DXP and continue operating.
If the update process fails the LEDs will indicate the possible cause of failure:
PTT LED flashes – dxp.upd file not found in the root directory of USB FLASH drive.
•
TX AUDIO LED lit, RX AUDIO LED flashes – connected device is not recognized as standard
•
Mass Storage Class USB FLASH drive. This might be a nonstandard device, a complex device,
e.g. embedding an USB HUB (such as the older U3 "smart drives", or the FLASH/fingerprint
combinations, etc.), or simply a different device such as a keyboard, connected by mistake.
PTT LED lit, TX AUDIO LED flashes – USB FLASH disk's format is unknown. This may happen,
•
when the FLASH disk is partitioned or formatted in an unusual way. Use simple and low capacity
USB FLASH disks, which usually come with traditional simple partition table and FAT file system.
Please note, that current supplied through the USB-A connector is limited to approximately 100mA, and
does not allow using traditional rotary USB disks.
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7 – FIRMWARE UPDATE
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