: Click "Open" or "Browse" and select the official .sgl firmware file (e.g., DM-1801_V2.1.9.sgl ).
If you are considering custom firmware, you may need to open the radio (remove the battery and four screws). Look for a small silver IC near the battery contacts: baofeng dm-1801 firmware update
For the best experience, the OpenGD77 firmware is the gold standard. Warning: This voids your warranty and carries a small risk of bricking. : Click "Open" or "Browse" and select the official
Some DM-1801 models include a GPS chip. Unfortunately, factory firmware often leaves it dormant or buggy. Certain custom firmware builds and specific official updates can activate APRS (Automatic Packet Reporting System) functionality over DMR or analog. baofeng dm-1801 firmware update
: Open the official Baofeng upgrade software (often included with the CPS).