While this article is about OpenBSD's floppy support, if you already had OpenBSD on the machine and working networking, upgrading it without any external devices is as easy as:<p><pre><code> ftp -o /bsd.rd https://cdn.openbsd.org/pub/OpenBSD/6.7/i386/bsd.rd
</code></pre>
Then reboot and at the <i>boot></i> prompt, just type "bsd.rd".<p>On 6.6 and newer, just type <i>sysupgrade</i> and that's it.