by pressing the red battery release button.
The app will automatically compare your current firmware with Dyson’s servers. If an update is available, a banner will appear saying "Firmware Update Available." dyson v15 firmware update
Unlike robot vacuums, the Dyson V15 does update over Wi-Fi automatically. You must use the MyDyson app (formerly Dyson Link) and a Bluetooth connection. by pressing the red battery release button
Here are some specifics I could add:
that involve disassembling the battery pack to access the PCB. This requires a dyson v15 firmware update
