Secure way to burn fuse for RT1051

[CrowzK]

Hi, 

In order to boot securely, it needs to burn some of the fuses including BEE keys. The problem is that we have contract manufacture and there is no way for us to burn fuses securely. Because the manufacturing company needs to burn the fuse. In the beginning, we were considering using Segger Flasher Portable Plus, but we realize that the transaction between the flasher and MCU are not secured. Do you have any better idea to burn the fuse securely?

Thanks,

[EdwinHz · Accepted solution]

Hi @CrowzK,

The usage of the fuses are an irreversible change to the device. For this reason, they are designed to be as burned in a clear and conscious manner, which is why there is no way of obscuring what fuses are being burned. They are meant to be done by the developer themselves, not by a third party.

Sorry for the inconvenience this may cause.

BR,

Edwin.