Ingenext is planning to counter the update in a week or two with a solution that allows its mod to run unimpeded. It said that only three customers are known to have updated their cars with Tesla code before trying the update.

Even so, this suggests would-be performance hackers could be in for a challenge if they want to maximize the potential of Tesla’s EVs without the company’s blessing — they might not have more than a small window of time before Tesla clamps down again. It’s not surprising that Tesla would take swift action when its business model revolves around software-locking features, but this does suggest that the market for unofficial upgrades may be relatively limited.