A deliberate rollout of Tesla’s Full Self-Driving beta model 10.2 to roughly 1,000 Tesla house owners with “perfect” security scores was delayed on Saturday. In explaining the delay, CEO Elon Musk said that there have been “a few last-minute concerns about the build.”

Tesla house owners have been abuzz with pleasure earlier this week when Musk introduced that roughly 1,000 drivers with excellent safety scores—the 0 to 100 scale the corporate makes use of to find out whether or not the motive force may have a future accident—would obtain FSD beta model 10.2 at midnight on Friday. Contrary to its title, the software program doesn’t enable Tesla vehicles to drive themselves. It gives help on highways and metropolis streets however requires driver supervision always.

As with all Musk deadlines, this one was taken with a grain of salt. In the top, Tesla didn’t rollout FSD.

“A few last minute concerns about this build. Release likely on Sunday or Monday. Sorry for the delay,” the CEO tweeted early Saturday.

Musk didn’t element what last-minute issues had brought on the delay. However, listening to that FSD 10.2 has points isn’t a shock. Just about two months in the past, Tesla stated that FSD beta model 9, which was delayed for years, may “do the wrong thing at the worst time.”

Tesla’s preliminary plan consisted of releasing model 10.2 to about 1,000 drivers with a 100/100 rating and analyzing how they did with the software program for a number of days. If the discharge seemed good, Musk explained, 10.2 would step by step start rolling out to drivers with scores of 99 and under. The FSD system has been operated by 2,000 drivers for nearly a 12 months with no accidents, the CEO said in September, including that it wanted to remain that approach.

“FSD beta system at times can seem so good that vigilance isn’t necessary, but it is. Also, any beta user who isn’t super careful will get booted,” Musk stated at the moment.

According to Tesla’s website, a driver’s security rating relies on 5 metrics known as “safety factors,” that are: ahead collision warnings per 1,000 miles, exhausting braking, aggressive turning, unsafe following, and compelled Autopilot disengagement. The next rating signifies a safer driver, the corporate claims, with most drivers anticipated to have a security rating of 80 and above.

Tesla has not too long ago come beneath hearth from regulators such because the National Transportation Safety Board. The head of company, Jennifer Homendy, informed the Wall Street Journal in September that the corporate shouldn’t launch the most recent FSD beta till it addressed security deficiencies in its expertise.