I didn’t do anything particularly special, just downloaded the update from the Synology website, clicked Manual DSM Update and uploaded the file. It warned me that it may take 20mins+ to install and then came back 30secs later.
I should note that I’m using it on a bare metal install, a Dell OptiPlex 7040 SFF and I didn’t add any extra config, drivers or anything of the sort when I built v7.0.1 with RedPill. It just worked