If you are looking for a 2021 update specifically to fix a bug or install a specific feature, be aware of the following: While there is no single official document specifically

ZTE F671Y

As 4G home internet became the backbone of remote work during the global pandemic, the emerged as a reliable workhorse for many users. However, throughout 2021, users reported a mix of connectivity stability issues and security vulnerabilities that ZTE aimed to patch via a series of firmware updates. If you are looking for a 2021 update

Stable Power

: Do not power off or unplug the router during the update process, as this can permanently "brick" the device.