Two important features I insist on for products I develop:
1. Staged rollout of firmware updates. It’s common practice for apps and software but for some reason it’s less common with firmware. Rolling out to 1% (or less, depending on scale) of devices and waiting a day is cheap insurance. Side note: Build a good relationship with customer service people so you hear about these things immediately.
2. A failsafe firmware reset back to factory state. Some sequence that resets the device completely back to the way it was when it came out of the box, firmware included, as a last resort. In conjunction, your automated tests need to confirm that every factory firmware you’ve ever released can update to the latest firmware.
1. Staged rollout of firmware updates. It’s common practice for apps and software but for some reason it’s less common with firmware. Rolling out to 1% (or less, depending on scale) of devices and waiting a day is cheap insurance. Side note: Build a good relationship with customer service people so you hear about these things immediately.
2. A failsafe firmware reset back to factory state. Some sequence that resets the device completely back to the way it was when it came out of the box, firmware included, as a last resort. In conjunction, your automated tests need to confirm that every factory firmware you’ve ever released can update to the latest firmware.