According to the official bulletin, the January 2021 security patch fixes 4 critical, 1 medium, and 25 high levels of CVEs. The latest update for Huawei Mate 30 series bumps the EMUI version from 11.0.0.168 to 11.0.0.170.
Steps to install the update
Via Settings App
Open Settings app Go to System & updates -> Software update Then, click on Check for updates Download and install the update.
Via Support App
Open Support app Go to the Services tab Click Update Then, click on Check for updates Download and install the update.
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