Lab599 Utility v2.271 (Build 277)

Lab599 Utility v2.271 (Build 277)

This maintenance release fixes the Live Audio waterfall palette test on Retina Macs. The test now renders both 1x and 2x snapshots on every test Mac and converts its view-space sample point to bitmap pixels using each snapshot's horizontal and vertical scale. This is a test-only change; the app's palette rendering, audio processing and radio behavior are unchanged.

Thanks to EA3JIC for the precise report and suggested patch. The change was reviewed before implementation; no supplied patch was applied blindly.

Validation: The old test reproduced the reported failure with a forced 2x snapshot; the corrected AudioMonitorTests suite passed at both 1x and 2x (15/15). The full build-utility.sh --test-only suite passed, and the universal arm64/x86_64 app was rebuilt and its code signature verified. No physical radio or RF transmission was used for this release validation.

Download: Lab599-Utility-v2.271-macOS-universal.zip contains the macOS 12+ app, offline illustrated Help, English and Persian guides, and license notices. Compare its SHA-256 with SHA256SUMS.txt. The app is locally signed, not Apple notarized. Manufacturer firmware is not included.

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Source archive note (2026-10-02): This historical tag was moved to the corresponding commit in the cleaned repository history. Tracked files outside the retired reverse-engineering/ directory are unchanged. Attached downloadable files and their checksums were not changed. Historical text in this release may still refer to the retired directory. The source archive for this tag still contains older review documentation; the retired reverse-engineering/ directory is absent from the tag tree.