I finally took the plunge and updated the firmware on my Huawei E5776s-32 from the stock 2017 version to the latest release (21.200.xx.xx.xxx). Here’s my honest take after using it for two weeks.
Keeping your mobile hotspot current ensures you aren't left behind by network changes. huawei e5776s-32 firmware update
(located under the battery cover).
The device will reboot automatically. The OLED screen will show the normal startup logo. Connect to Wi-Fi and log into 192.168.8.1. Check Device Information – the firmware version should be updated. I finally took the plunge and updated the