Wired: Tesla's Quick Fix For Its Braking System Came From The Ether

“The fact that Tesla engineers were able to slash nearly 20 feet of stopping distance in a couple of days is a sign that there was something fundamentally broken in what they were doing,” Sam Abuelsamid, a senior analyst at Navigant Research, wrote in Forbes.

https://www.wired.com/story/tesla-model3-braking-software-update-consumer-reports/