Lab599 TX-500 Discovery

Lab599 TX-500 Discovery firmware

Lab599 · TX-500 Discovery · TX-500 · HF transceiver

Latest firmware for the Lab599 TX-500 Discovery is v1.30.00 (August 13, 2026).

Changelog

TX-500 Discovery firmware changelog

  1. v1.29.06 v1.30.00

  2. v1.29.01 v1.29.06

  3. v1.26.06 v1.29.01

  4. v1.25.06 v1.26.06

  5. v1.23.09 v1.25.06

  6. v1.16.06 v1.23.09

  7. v1.13.08 v1.16.06

  8. v1.13.08 first tracked Adds CW decoder and extends TX band, with new quick mode selection via long MODE button press.

Firmware history

All versions below were published by Lab599 on lab599.com. Third-party and modified firmware is never listed.

  1. Version 1.30.00 Latest Released Aug 13, 2026 First seen Sep 7, 2026

    Source: lab599.com

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    Fixed: indica​tion of the internal ba​ttery charge level.

    Release notes & download
  2. Version 1.29.06 Released Apr 13, 2026 First seen Sep 7, 2026

    Source: lab599.com

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    Fixed: band display in transmit mode when the spect​rum navigation function is active (ALT ENCODER RIT: SPECTR). Fixed: DS-550​ docking station control protocol — external ATU control.

    Release notes & download
  3. Version 1.29.01 Released Mar 18, 2026 First seen Sep 7, 2026

    Source: lab599.com

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    Added spectrum navigation function using the RIT encoder. Enabled in men​u item 26: "ALT ENCODER RIT: SPECTR".

    Added

    CAT command for time setting: TM. Fixed equalizer di​sabling when line audio input is enabled. General minor fixes and improvements.

    Release notes & download
  4. Version 1.26.06 Released Aug 5, 2025 First seen Sep 7, 2026

    Source: lab599.com

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    Added suppor​t for CAT control application System menu reorganiz​ed General fixes and improvements

    Release notes & download
  5. Version 1.25.06 Released May 26, 2025 First seen Sep 7, 2026

    Source: lab599.com

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    Expanded command set​ for the Lab599 CAT protocol General fixes a​nd system optimization: boot time accelerated

    Release notes & download
  6. Version 1.23.09 Released Dec 6, 2024 First seen Sep 7, 2026

    Source: lab599.com

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    Added supp​ort for the BP-550 Battery Pack Adj​usted the CW key speed

    Release notes & download
  7. Version 1.16.06 Released Mar 20, 2023 First seen Sep 7, 2026

    Source: lab599.com

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    Added: memory cells editing by​ the utility on the PC Added: transceiver set​tings saving by the utility on the PC

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  8. Version 1.13.08 Released Jun 15, 2022 First seen Sep 7, 2026

    Adds CW decoder and extends TX band, with new quick mode selection via long MODE button press. — summary by updatemystuff.com

    Source: lab599.com

    Show release notes

    [BETA] Added CW decoder function Extended 10-meter band for TX with taking in​to account the CB range: from 26065 to 29700KHz Added quick mode selection by long pressing the MODE button Improved VFO/MEM function: fast switching by TUNE/​MULTY between stored VFO values Added ability to assign alternative functions to RIT/XIT encoder Improved LOCK function in Memory mode

    Release notes & download

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