The problem with that is...
since UEFI is highly complex, it's likely that you'll experience serious bugs during the use of your device. Therefore you need to update it.
The obvious solution would of course be to get rid of UEFI completely and get something with minimal complexity, for example something based on the OpenFirmware standard. Having much less code is the simplest way to get rid of many bugs. Then you would have so few bugs that updates aren't necessary any more, and then you can disable writing your BIOS completely.
Biting the hand that feeds IT
