U2 MANUAL
U2 Operating States · Icons · Button Actions
| Icon | State | Button Action |
|---|---|---|
| No icon | Menu mode Showing an app screen | Short press <0.5s = next app Hold 0.5–1.5s, release = previous app |
 Red Bluetooth icon |
Advertising; waiting for the phone app to connect | In menu mode, hold ≥1.5s until the icon appears, then release to start advertising Hold ≥1.5s and release = stop advertising, back to menu |
 Blue Bluetooth icon (blinking) |
App connected, dartboard not connected | Blinks while scanning/searching for the dartboard Hold ≥1.5s and release = stop advertising, back to menu |
 Green Bluetooth icon |
App and dartboard both connected Ready to throw | Short press = send CH (change player) Hold ≥1.5s and release = stop advertising, back to menu |
 Orange A icon |
AD mode: app not connected | In menu mode, hold ≥5s until it appears, then release to enter Note: AD mode only works with Autodarts dartboards |
 Blue A icon (blinking) |
AD mode: app connected, autodarts board not connected | Blinks while searching for the host Hold ≥1.5s and release = stop advertising, back to menu |
  Green A icon + Green WiFi icon |
AD mode: app and autodarts board both connected, ready to throw | Short press = reset the BoardManager Hold ≥1.5s and release = stop advertising, back to menu |
| {OTA screen}: No icon | OTA update screen Shows device serial number and firmware version | On the OTA screen, hold ≥1.5s until the green arrow appears, then release to start the update If not connected to a network, OTA pairing will start |
| {OTA screen}: Green WiFi icon |
Home network configured | If configured, a steady green WiFi icon shows at the top-right Hold about 2s until the green arrow appears, then release to start a normal update |
| Pairing QR page | AD / OTA not configured; shows the hotspot QR code | Scan with the system Camera app to start pairing OTA pairing: press any button = exit pairing |
| Screen off (black, no icon) | Auto screen-off after 10 minutes of inactivity | Pressing any button only wakes the screen |
Notes
- Autodarts is a hard-dart recognition device; AD mode introduced in v2.5.0.
- Hold the button within 1 second after power-on to enter forced-upgrade mode (a hotspot "unidarts" / password "12345678" must be ready first).
- For DL200S: first pair via Bluetooth in Settings; after entering the 200S app, long-press for 6 seconds to start board verification.