If a firmware update fails on your Mach-E, you're stranded... There's no backup or emergency boot ROM to at least allow you to drive home.

This is pretty disappointing for a "premium" EV IMO, considering other devices like PCs and smartphones will automatically revert to the last working update if they fail to boot.

Most modern PC motherboards even have this feature implemented at a hardware level for the BIOS, where the previous firmware is restored from an independent "flashback" ROM if a startup failure is detected following an update.

In this video Louis is pretty frustrated about these poor engineering decisions being blamed on EV technology, rather than pointing the blame at the manufacturer's poor engineering decisions - as it allows the manufacturers to continually get away with making things worse, and not being held accountable.