Tesla Seeds 2026.21.300 Firmware to 140 Vehicles as Fleet Coverage Reaches 0.1%
Updated
Updated · basenor.com · Aug 10
Tesla Seeds 2026.21.300 Firmware to 140 Vehicles as Fleet Coverage Reaches 0.1%
2 articles · Updated · basenor.com · Aug 10
Summary
Tesla started rolling out firmware 2026.21.300 on Aug. 10, with TeslaFi showing 140 vehicles installed and only 0.1% of the fleet covered so far.
The tiny initial wave points to a seed build: Tesla typically uses these limited releases to stress-test software before expanding distribution, and 18 installs in a day suggests a deliberately throttled pace.
Official release notes have not been published, leaving early recipients effectively beta testers; the jump from the 2026.20.x line to 2026.21.x suggests more than a minor patch, though changes remain unconfirmed.
Broader clues should emerge within 24 to 72 hours if coverage moves above 1%, while owners are being advised to check the Software menu, stay on Wi-Fi overnight and avoid installing before critical trips.