If the band upgrades very slowly, and the Mi Fitness APP shows that it takes a long time for the device to restart after the transfer is completed, please perform the following checks or operations:
1. The time required for upgrading depends on the version download and the phone model. When upgrading the full package, Android upgrades in about 4-5 minutes, and iOS upgrades in about 6-8 minutes. Please wait patiently. When upgrading the firmware package, Android and iOS systems take 1-2 minutes;
2. Check whether the battery of the wearable device is sufficient. The remaining power will affect the upgrade speed of the wearable device. Please make sure that the battery of the wearable device is above 20% during the upgrade. You can connect the band to a power source before upgrading;
3. Check whether the network status is good. The time required for the upgrade is closely related to the network status. Please ensure that the network environment (4G/5G/WLAN) is in good condition;
4. Check the phone system version. Android phones are advised to upgrade the phone system to Android 6.0 or above before trying to upgrade the band;
5. Do not operate the band and APP frequently during the upgrade process. Frequent operation of the band or APP during the upgrade process will cause the system to take longer to complete the upgrade of the band.