Opt-in Fuse

There is a dedicated fuse for opt-in. Based on its value, MB2 decides whether to perform in-field ratchet update or to skip it.

If OEM wants to opt-in for in-field ratchet update, opt-in fuse should be programmed to 1. The MB2 checks whether the opt-in fuse is burned before proceeding with the hardware ratchet update. Note that this check is software enforced only.

Opt-In Fuse Name



1 Bit