1. Check whether the battery of the bracelet is low. If it is low, try to update it after charging.
2. Check whether the bracelet is connected to the device. If not, try reconnecting.
3. Try to upgrade with dedicated data cable to ensure good quality of data cable and support fast charging.
4. Connect the bracelet to the PC and update it with the installation program provided by the government.
5. Use a compatible mobile phone model, download the updated software provided by the government, and follow the prompts.
6. If all the above methods fail, it is recommended to send the bracelet to a professional maintenance point for maintenance.