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Firmware updatev1.2
Flight log uploadv1.1
Online USB Portalv1.0
Online USB WiFi configuratorv1.1
3D parts toolv1.0
Air hole calculatorv1.0
Altimeter Cloud APIv1.0
Altitude Predictorv1.0
Body Tube Strength Calculatorv1.0
Descent calculatorv1.0
Ejection Charge Calculatorv1.0
ESP web programmerv1.0
Fin Flutter Speed Calculatorv1.0
Firmware updatev1.2
Flight log uploadv1.1
Flight log verificationv1.1
Laser Cut Parts Designerv1.0
Online USB Portalv1.0
Online USB WiFi configuratorv1.1
Rail Exit Velocity Calculatorv1.0
Recovery Drift Calculatorv1.0
Visibility & Tracking Calculatorv1.0Hold down the BUTTON on your Mercury, and while holding it, briefly press the POWER button. Your Mercury is now in boot mode and ready to receive firmware.
The status LED will be off — that's normal in boot mode. The charging LED may still light up, which is fine and just means the USB connection is good. The output LED may also be illuminated, which is also normal — leave it as-is and continue.
Web-based firmware updates require Web Serial, which is supported only in desktop Chrome, Edge, Opera, and other Chromium-based browsers. Firefox and Safari will not work.
Mobile browsers probably are not supported either. You must use a PC or laptop.
Many USB-C cables, especially short ones bundled with phone chargers, are wired for power only and have no data lines. These will charge your device but cannot communicate with it, so the updater will not be able to detect your device.
If you have problems connecting to your device this is probably why.