And there's nothing even saying you'd have to use the meshtastic presets. You could have like a firmware update preset that would do things like reduce the error correction rate in order to improve the speed at which data is transferred with the full knowledge that you would have to be closer to the node than otherwise normal in order to compensate for that less error correction.

If I remember correctly, one megahertz of Wi-Fi Halo can do like four MBPS, so theoretically you might be able to get a quarter of that or one MBPS with some setting changes. The default for things like ShortFast is 250KHz of bandwidth. If you could actually get a way to pull 1MBPS over the link, that would only require 15 seconds to get the firmware patch across. Even if you double sent everything in order to make absolutely certain it got there, it would only take like 30 seconds.