⌚ Smartwatch Firmware Differences & Model Limitations
Not all Amazfit and Zepp smartwatches work the same way. Over the years, firmware updates and new models have introduced restrictions that affect how third-party apps like Notify can connect and operate.
This page explains the difference between older, mid-generation, and latest ZeppOS watches, and what limitations or setup requirements each group has.
New ZeppOS 4+ Watches since late 2023
These latest-generation watches include Bip 6, GTR 4, GTS 4, Balance, Cheetah, Active, and some variants of Bip 5.
Limitations:
⛔ Cannot connect if the official Zepp app is open
🔐 Require a BLE pairing key to connect
⚠ Many features blocked unless Zepp app is disabled or uninstalled
How to check: On your watch, go to Settings > About and check the ZeppOS version. If it shows ZeppOS 4.0+, your watch is in this group.
Recommended solution:
Instead of uninstalling or force stopping the Zepp app, you can now deactivate the device inside the Zepp app:
🧭 Open the Zepp app
⚙️ Go to the Device tab (bottom menu)
📱 Select your watch model (e.g., Bip 6)
🔘 Scroll down and tap Deactivate Device
This will let Notify connect without uninstalling the official app.
Mid-generation watches 2020–2022
This includes watches like GTR 2, GTS 2, GTR, GTS, T-Rex, Mi Band 4, and some early Bip U/Bip 3 models.
Limitations depend on Zepp app:
Work fully if Zepp app is not installed (Require a BLE pairing key)
If Zepp app is installed, Notify works in limited mode
You can also connect using BLE key to unlock all features
Old models before 2020
Examples: Amazfit Bip, Mi Band 2/3
✅ Full compatibility
✔ Works even if Zepp app is running
No BLE key needed
Unsupported Models
These devices are not compatible with Notify:
Wear OS devices (e.g. Pixel Watch, Samsung Galaxy Watch)
