Powerwall firmware versions reported by Netzero app users active within the past 7 days.

Powerwall 3

Latest version seen:   26.2.1 a7456b0a

Version	PW3 %	First seen
26.2.1 a7456b0a	89.9%	Feb 12, 2026
25.42.1 ab1ab81d	4.4%	Nov 17, 2025
25.34.3 82272c3b	1.8%	Oct 17, 2025
26.2.1-sb2-8 a8b51cd1	1.2%	Feb 26, 2026
25.42.2 142a27a1	1.2%	Dec 17, 2025
26.2.1-r 51403658	0.3%	Feb 13, 2026
24.28.202 cc45f87b	0.3%	Mar 12, 2025
25.34.1 7e37ef9d	0.2%	Oct 03, 2025
25.26.1 2c4bb00e	0.1%	Aug 06, 2025
25.42.1-c 8664858e	0.1%	Dec 18, 2025
Others	0.6%

Powerwall 2

Latest version seen:   26.2.2 82f2d663

Version	PW2 %	First seen
26.2.0 87adb89e	54.3%	Jan 23, 2026
26.2.2 82f2d663	41.4%	Mar 01, 2026
25.42.1 1d1ff4c6	1.8%	Nov 19, 2025
25.34.1 930a7700	0.4%	Sep 17, 2025
Others	2.1%

The firmware version number follows a calendar-based scheme: the first part represents the year, and the second part indicates the week number of the major release. For example, version 25.42 corresponds to the year 2025 and the 42nd week starting October 13, 2025. Since 2023, Tesla has consistently released a new major version every 8 weeks. The third part of the version (e.g. 25.42.1) represents a revision or incremental update, which may be released more frequently.

Data last updated: 2026-03-09