alt Hacker NewsI know some higher end gaming motherboards that were targeted towards the overclocking community had two bios chips for exactly this purpose and switching between them was trivial from what I remember. If you overclocked too far, you wouldn't brick your system. It seemed like overkill to me. I'm guessing this is less common than it's worth to fix in software, but then at least continue to give support for the issue.
If you overclocked too far, you could remove the CMOS battery or hold the CLR_CMOS button that these high-end boards probably had.
Two BIOS chips was supposed to protect you from bad BIOS updates or a bad BIOS mod, just like the scenario from TFA.