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by notaplumber 2916 days ago
For as long as the release is supported you can use syspatch(8). They also appear to provide serial console access on request so you can perform a release upgrade via the recommended bsd.rd (RAMDISK) kernel method.

There's also the manual upgrade method, for an example of what that looks like, here's the guide for going from 6.2->6.3: https://www.openbsd.org/faq/upgrade63.html#NoInstKern
1 comments
INTPenis 2915 days ago
The key here is console access.

I have an OpenBSD router at home and the only negative part is about once every two years when I feel the need to catch up on the latest release.

Because then it needs a null modem cable and direct access.

So when someone is selling remotely managed OpenBSD VMs my natural question is how to do release upgrade.

link
sedachv 2911 days ago
You can do unattended upgrades using autoinstall(8). There is a handy script for patching bsd.rd with a configuration file for the update process: https://bitbucket.org/semarie/upobsd/src although there should not be anything to configure on most boxes (maybe you want to deselect the X packages for your router).
link