Samsung has started rolling out a new software/firmware update to the Galaxy A5 (2017), Galaxy A30, and Galaxy M31 users. The latest update brings software versions are A520FXXSDCTCA, A305FDDS5BTC1, and M315FXXU1ATD1.
Samsung Galaxy A5 (2017) update changelog:
Version – A520FXXSDCTCA
Security Patch – April 2020
Samsung Galaxy A30 update changelog:
Version – A305FDDS5BTC1
Security Patch – April 2020
Samsung Galaxy M31 update changelog:
Version – M315FXXU1ATD1
Security Patch – April 2020
If you want to check for the update manually, Settings app, selecting Software update, and tapping Download and install.