For this guide, you will need:
First of all, original
Mi Fit application should be installed on your phone and paired with Mi Band 3. Once your fitness tracker is connected and works properly with original chinese software you can follow subsequent steps. At this stage, one more important step is to turn on
“Discoverable mode” in Mi Fit so other applications could discover your band:
When all previously mentioned requirements are met, you need to install modified (that supports MB3)
GadgetBridge app on your Android device:
As installation process is finished, open
GadgetBridge and grant the permissions it asks you for.
After that press the round blue button (with plus sign “+” inside) to add new device:
Scanning progress may take a few minutes and may even fail, then force stop
GadgetBridge and try again (On Android > 6.0 “Location Services” should be enabled to discover new Bluetooth devices). If it still can’t find your band, disable Bluetooth, open GadgetBridge and allow it to enable Bluetooth itself.
As your Mi Band 3 is displayed in the list, click on it, then click back button:
After you returned back, pairing progess starts and it it will ask you to tap the button on your Band to finish setup:
If everything was done correctly, you may see paired device right in the
GadgetBridge main menu with blue icon and “Connected” state:
Having paired your smart band in the
GadgetBridge, you are ready to install firmware (custom one or return to the original).
In order to flash the firmware, open your file manager, find the firmware file (*.fw), click on it and select GadgetBridge (if something goes wrong, try aтother file manager):
Now it will ask you whether you really want to install it. Click install, wait until everything will be finished and enjoy your brand new firmware!