This report details the firmware landscape for hardware identified as "XL950." Through technical analysis, the term "XL950" primarily refers to two distinct hardware categories: (Building Automation) and Qualcomm Snapdragon X950/X955 Modems (often mislabeled in search queries as XL950 due to naming conventions). This report focuses on the availability, versioning, and acquisition methods for both primary candidates.
: Some users on forums like the Ezlo Community or Reddit have shared archived links or private copies of version 4.0.3 and 4.0.1, though these are not officially supported and carry risks if installed incorrectly. How to Check Your Current Version To see which version you are currently running:
: Version 4.0.4 is primarily required for users missing the "Nexia Home Intelligence" (now Trane/American Standard Home) icon, which is necessary for remote climate access. Trane Home Support +5 Known Firmware Version History Version Release Context / Notes 4.0.4 Latest known version; enables remote access for original release units. 4.0.3 Verified by community users as a stable update path for legacy units. 4.0.1 Previously the standard public download before being pulled. 2.2 / 2.1 Earlier mid-lifecycle updates; required for basic Nexia connectivity. 1.1 / 1.0 Factory/initial release versions. How to Check Your Current Version On the thermostat home screen, press xl950 firmware download versions
Because the update servers are offline, homeowners cannot update the firmware directly through the thermostat's internal "Check for updates" feature; doing so will result in an error.
| Version | Status | Best Used When... | | :--- | :--- | :--- | | | Long-term support (LTS) | Your site uses third-party expansion modules. v4.2.x dropped driver support for one specific module (Rev C). | | v3.9.4 | End-of-life | You are performing a step-upgrade from v3.x to v4.x (you cannot jump directly to v4.2.8). | | v4.3.0-beta | Beta | Testing only. Do not deploy in production. The new dashboard UI is nice, but the SNMP agent is currently unstable. | This report details the firmware landscape for hardware
Firmware versions for the X950 series are typically identified by a build date and a revision number (e.g., R2.0.12 ).
October 26, 2023 Subject: Identification and Availability of Firmware for XL950 Hardware Platforms How to Check Your Current Version To see
Skipping three versions and jumping straight to the latest can sometimes introduce compatibility issues with your existing configuration backups.
: Official firmware is now distributed exclusively to HVAC dealers . They can perform an on-site update using the SD card slot on the thermostat.
: Mentioned in technical communities include 1.1, 2.0, 2.1, 2.2, 3.0, and 4.0.1.