Enter the concept of —which in this context we will define as Embedded Firmware Recovery Protocol .
But here is the bug: The crash happens after the bootloader hands off. The bootloader sees a valid signature. It doesn't know the app is brain-dead. easy firmware efrp
Vendors love to sell "Easy EFRP" as a feature. The marketing slicks say: "One-click recovery. Brick-proof. Zero downtime." Enter the concept of —which in this context
You push an update to 10,000 devices. The update corrupts the NVS (Non-Volatile Storage) partition. The application boots, sees invalid config, and panics. The watchdog resets. Repeat. It doesn't know the app is brain-dead
But as the engineers who have to sign the release notes and answer the 2:00 AM support page, we know the truth:
Notice the attempts counter. That is the difference between a brick and a recovery. If the app crashes immediately, the bootloader counts that attempt. After 3 reboots, it gives up on that binary. "Easy Firmware EFRP" is a myth in the same way that "rust-proof" is a myth. It is a property, not a product.