Typing Help, Scan is not listed as a valid command. Makes sense. Github was back up so I downloaded the source and had a look at Main.c
{ "gain", cmd_gain },
{ "power", cmd_power },
{ "sample", cmd_sample },
//{ "gamma", cmd_gamma },
//{ "scan", cmd_scan },
{ "sweep", cmd_sweep },
{ "test", cmd_test },
{ "touchcal", cmd_touchcal },
So while it looks like they may have considered adding this feature, it is not supported. There may have been no benefit to something like this versus using my segmented approach. Still, the upgrade is well worth it just for that one bug fix. The system is now fairly stable.