DART-MX91 Changelog¶
Murata Type 2DL/2EL Wireless Module Firmware Requirement (February 2026)¶
Component Change Notice
NXP changed the IW611 IC fabrication source from TSMC to UMC. The Murata module MPN did not change.
SOMs with Murata Type 2DL or Type 2EL wireless modules shipped from the beginning of February 2026 require NXP firmware released after April 2025. Firmware versions released before April 2025 are not compatible with the UMC-manufactured IW611 IC.
| Affected Wireless Modules | Affected Shipments | Minimum Supported Firmware |
|---|---|---|
| Murata Type 2DL / Type 2EL | Beginning of February 2026 | 18.99.3.p23.20 |
The firmware update also requires that the Wi-Fi driver, btnxpuart driver and OpenThread userspace utility are updated. This update is backwards compatible with modules shipped prior to February 2026.
Software Requirement
Update your existing BSP to the required update listed below for your release / branch. This includes updates to the following packages backported from the NXP 6.12.20 BSP:
- Wi-Fi firmware version
18.99.3.p23.20 - Wi-Fi driver version
MM6X18537.p9 btnxpuartdriver- OpenThread userspace utility
| Release / Branch | Required Update |
|---|---|
| Yocto Scarthgap 6.6.52-2.2.0 | variscite-bsp-platform@496d8ee9a or newer |
| Debian Bookworm | flexbuild@2b4cb98c or newer |