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⌚ 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 GTR 4, GTS 4, Balance, Cheetah, Active, and some variants of Bip 6.

Limitations:

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.

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:

Old models before 2020

Examples: Amazfit Bip, Mi Band 2/3

Unsupported Models

These devices are not compatible with Notify:

Try Notify Lite for Smartwatches →

📊 General Limitations (All Models)

ℹ More Info

Learn how to retrieve your BLE pairing key here →