There is no user-downloadable software or firmware update for the Makita DMR112.
If you see a website claiming to offer a “DMR112 firmware download,” it is likely a scam, a virus, or a mislabeled file for a different product (e.g., a DAB radio from another brand). makita dmr 112 software update download
Rotate the Volume/Tuning Control knob until "SW Version" appears on the LCD. Press the knob to display the installed version number. 3. Download & Update Procedure Improving DAB+ sensitivity in Australia and New Zealand
If you cannot find a Makita DMR 112 software update download and your radio is malfunctioning, consider these options before giving up: ” it is likely a scam