FlexRadio Announces the Immediate Availability of SmartSDR v4.2.18

Tim - W4TME

FlexRadio is pleased to announce the release of SmartSDR v4.2.18,
now available for download.

SmartSDR Basic™ and SmartSDR+™ v4.2.18 is an Early Access software and firmware release for Aurora™, FLEX-8000™, and FLEX-6000™ series SDRs, as well as Maestro™. This version supersedes all previous SmartSDR releases and is available to all users. Access to new features introduced in this release is limited to SmartSDR+ Early Access feature license holders unless otherwise noted. We strongly encourage all Aurora, FLEX-8000, and FLEX-6000 owners to keep their systems up to date with the latest SmartSDR v4 release to ensure they receive cumulative fixes, new features, and incremental improvements.

We recommend upgrading to SmartSDR v4.2.18 at your earliest convenience. Reverting to earlier SmartSDR v4 versions is discouraged, as older releases may reintroduce issues resolved in this update and cause issues with installed drivers.

VERY IMPORTANT: Before upgrading, please review the SmartSDR v4.2.18 Release Notes for important release-specific information.

VERY IMPORTANT: It is highly recommended to uninstall all previous versions of SmartSDR before upgrading to SmartSDR v4.2.18. Before installing SmartSDR v4.2.18, it is strongly recommended that all previous versions of SmartSDR be completely uninstalled from your PC, including DAX and the FlexVSP driver. SmartSDR v4.2.18 introduces a new software architecture that includes updated DAX and FlexVSP drivers. Retaining older versions on your system may result in installation conflicts or degraded performance. For best results, ensure all earlier SmartSDR versions (v4.1.5 and below) are fully removed before proceeding with the installation. Refer to the HelpDesk article “How to Install SmartSDR v4.2.18” for detailed uninstallation and installation instructions.

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Release Highlights for SmartSDR+ v4.2.18

SmartSDR for Windows supports both x64 and ARM processor platforms. We are excited to announce expanded platform support for SmartSDR for Windows, DAX, and CAT, including their respective audio and virtual comm port drivers, with the introduction of native compatibility for both x64 (64-bit) and ARM-based processors.

Upgraded DAX to a completely new audio transfer architecture. Starting with SmartSDR v4.2.18, the DAX functionality has been completely re-architected and is now called DAXv2. This update delivers significant architectural improvements, enhanced low-latency performance, and improved compatibility and stability with modern Windows systems. DAXv2 is available for all users.

Updated CAT FlexVSP Driver. Starting with SmartSDR v4.2.18, the FlexVSP driver, used to create virtual comm ports, has been upgraded to be fully compatible with both x64 and ARM versions of Windows 11. As with DAXv2, this update is available for all users.

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SmartSDR v4.x Changelog

For a complete list of updates and software changes across the SmartSDR v4 series, please visit: https://www.flexradio.com/software/smartsdr_v4_changelog/