If any of you is having trouble pairing the newest versions of the firmware (Fossil Hybrid HR, in my case, Charter model) with Gadgetbridge because the device keeps getting bricked (the watchface stops working, never going back 'home'), here's the solution:

• Make sure there are no apps in your phone that can interfere with the watch connection.
• Download an older version of the official app to trigger a firmware downgrade (I went back to DN1.0.2.21r.v1, that corresponds with version 4.6.0 of the official app). It will look like it's upgrading, but it will be doing the opposite. Don't let Google Play succeed in updating the app, or it won't work. Delete the old official app.
• Download the patched official app so you can get the password for the device from the Fossil servers, but don't let it upgrade your firmware. You have to be fast, interrupt the process... Honestly, it took me MANY attempts.
• Delete the patched app.
• Download Gadgetbridge and pair it with your watch, using the password you got on step 3.
• Done!
• [https://codeberg.org/Freeyourgadget/Gadgetbridge/wiki/Fossil-Hybrid-HR#user-content-known-firmware-versions](Firmware versions) [https://www.apkmirror.com/?post_type=app_release&searchtype=apk&s=fossil](Download firmware, requires APK Mirror from the Play Store) [https://www.reddit.com/r/FossilHybrids/comments/k81kkq/unofficial_enhanced_android_app_based_on_v460/](The patched app) [https://kurotimedesign.blogspot.com/2022/06/how-to-downgrade-your-fossil-hybrid-app.html?m=1](More instructions)