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Companion application for Huami Devices (such as Amazfit Bip, Cor, MiBand2/3 and GTS and GTS) and the Pinetime Infinitime.

Requires Sailfish version or above due to changes in the base Sailfish image. Instructions for compilation including for other operating systems can be found in the documentation/ directory.


  • Install the "chum" repository (by downloading the RPM file and running devel-su pkcon install-local RPM_FILENAME )
  • Run devel-su pkcon refresh
  • Run devel-su pkcon install harbour-amazfish

Supported Devices

There are 3 tiers of supported devices:


These are devices I have, have tested, and will try not to break any functionality for any included:

  • Amazfit Bip
  • Amazfit GTS
  • Amazfit GTR2
  • Pinetime InfiniTime
  • Bangle.js


These are devices which are properly implemented in the application, but I do not have and are tested by the community, and include:

  • Amazfit BipS
  • Amazfit Bip Lite
  • Amazfit GTS2

I do not promise not to break functionality in these, but will fix where I can.


These are devices which use a protocol that is close to another supported device, and so is treated like that device. Your mileage may vary with these devices.

  • MiBand 2/3/4
  • Amazfit Cor

Note for GTR2 / GTS2 owners

These watches fail to follow the Bluetooth specification, which states that the "Appearance" characteristic should be readable without auth/encryption. In fact, it seems this characteristic is not readable at all, even though it is available, and this causes a failure in Bluez. It seems like Android/iOS are less strict in this regard.

A patch has been added to Bluez which makes it not read the characteristic if it has previously been read and cached, and this allows us to work around the issue.

The device cache is in /var/lib/bluetooth/[host mac address]/[watch mac address/info.

As root, add the line


under the [General] heading and restart Bluetooth with

systemctl restart bluetooth

Do this after pairing the watch in Amazfish.

Powered by KEXI

As of version 0.5.1, activity data is retrieved into an SQLite database. Because I think it is important to allow individuals to be in control of their own data, and that they should have the ability to analyze it themselves, I have chosen to store data in a KEXI compatible database. This will allow you to copy the database from the phone, and open it up inside KEXI on Linux/Windows/Mac and perform queries and reports on it. This added ability means I link to a couple of KDE libraries, which should be installed automatically.

Firmware Download - READ FIRST - I am not liable if you brick your watch ;)

Read this for info about which files to flash:

File download has been tested using an Amazfit Bip and GTS.

The firmware is split into multiple files on these devices. With the official MiFit app, all are downloaded automatically in the correct order. With this app, you have to send each file individually. The firmware files are available by extracting the Zepp apk, and looking in the assets/ folder for files named Mili_chaohu.* for the Bip. GTS firmware files can be found online, the device name is kestrelw, but be sure the files you are downloading are legitimate. When you select a file, its type and version will be determined, and you will be prevented from sending invalid files.

The firmware (.fw) requires a matching font (.ft) and resource (.res). Send the firmware first, the app will send a reboot command at the end of the transfer, and the watch will boot up into a mode where it needs the matching font and resource sent. Just wait for the app to connect again, then send the font and resource.

The following types of file exist:

firmware, resource, a-gps data, fonts

So, to re-iterate, the firmware flashing order is:


Server Side Pairing Code

The newer devices (GTS, BipS etc) requires a server-side pairing key which requires initial pairing with an android device. To get the key, follow the instructions here and enter into Amazfish when prompted, WITHOUT 0x at the beginning.


Pairing Issues

Pairing works for myself, sometimes I have to try twice. If pairing doesn't work at all, then try:

Keep the app open, and pair again in the BT settings page of sailfish
In the sailfish BT settings page, delete all entries and try again
Turn off/on BT on the phone
Factory reset the watch

Check if after all this, pairing works from the sailfish BT settings page. It should pair and connect just fine from there. If that doesn't work, my app wont either.

Not all features currently implemented.

May not work on all devices

Uses Bluetooth Low Energy to communicate with the watch, this is known to be problematic on some devices. It is known to work on the Xiaomi Mido. Probably also works on the FP2 and is tested on the XA2.

Implemented Pairing Notifications Calls Some settings Retrieving activities Heartrate Chart Alarms Watchface download Firmware upload Activity Sync Basic music control

Todo More Settings Support other devices (maybe e.g. MiBand2, as it is similar)

Tip: On your device, create a symlink in /home/nemo to /home/nemo/.local/share/harbour-amazfish This way, you can easily copy the database off the phone using MTP.

Button Actions

Bip and GTS notify when the watch button is pressed. This is captured by Amazfish which allows running actions on theses presses. An action can be ran on 2,3 or 4 presses. To configure the actions, go to Settings > Application > Button Actions.

A custom script can be used, the script must be called and be in the home folder. Example which sends a OTP code to the watch as a message:

if [ "$1" == "4" ]; then
    CODE=`python3 -c 'import pyotp;totp = pyotp.TOTP("XXXX Authenticator code here XXXX");print('`
    dbus-send --session --print-reply /application string:'' string:'Google OTP' string:$CODE boolean:true


Credits to:

The Gadgetbridge devs, which gave me a lot of hints and inspiration from their device code.