Upgrading to 23.05.4?

Installing and Using OpenWrt
1

I am using a Xiaomi Mi Router 4C with OpenWRT 23.05.3.

If I upgrade the firmware to 23.05.4, will I loose my current configuration and setup?

I have a VLAN setup and use DoH with the HTTPS-DNS-Proxy plugin and would hate to loose the current configuration

Is an upgrade to this firmware version essential to maintain router security?

2

Configuration is upgraded one version ahead like 22->23, inside same version config is kept. Easiest is to use auc or luci-app-attendedsysupgrade which also keeps your installed packages.