You must use an SD-Card reader to perform this operation. Do not attempt to do this directly on the dash cam. Download the Update autoexec.ash file. This is a simple text file with the following contents (rm a:\autoexec.ash firmfl prog d:\firmware.bin >> d:\flashlog.txt rm d:\autoexec.ash rm d:\firmware.bin ). This file has the necessary commands to extract the existing firmware from the dash cam. Download the desired firmware from the section below. Rename the downloaded firmware file to firmware.bin Copy the autoexec.ash and firmware.bin files to SD-card using a card reader. Insert the card into the dash cam and turn it on. Wait a minute for the process to complete (the whole process takes about 10 seconds). Turn off the device Use your dash cam with the latest firmware.