I tried both.
Through the computer using the LGMobile Support Tool (connected as ethernet connection), it tells me to "Follow Verizon Update Tool" on my screen... or something to that effect. So then I try OTA and it always tells me the same thing. No update available.
As this update does not do anything substantial I am not that worried about it, but it is the challenge of getting it done that makes it fun.
My Spec2: Rooted, Firmware: VS93010E, OS: 4.0.4, Software update version: 6.3.0_B2