> The cheapest way to reprogram a blown efuse is to buy a new efuse. I think this somewhat undersells what a monumental task un-blowing an e-fuse on a chip wou

> The cheapest way to reprogram a blown efuse is to buy a new efuse. I think this somewhat undersells what a monumental task un-blowing an e-fuse on a chip would be (e.g. resetting something like the USB boot enable bit on the RaspberryPi's SoC). If it's even feasible with today's technology, it would take a top-class semiconductor research facility and significant effort to pull it off. It's $millions compared to taking a new ~$1 chip off the shelf.