QRP Labs QMX firmware `v1_04_001`

QRP Labs · Released Jun 12, 2026 · First seen Sep 7, 2026

v1_04_001 is not the latest firmware for the QRP Labs QMX: the current version is v1_04_015 (September 24, 2026). Go to v1_04_015

What's in this update

BETA firmware version

Bug fix: 1_04_000 hung when run on a QMX, but was OK on QMX+
Bug fix: AM mode indicator incorrect when using character type mode indicator
Bug fix: Add AM (mode 5) to CAT MD command Get/Set
Bug fix: Resolved distorted TX audio in LSB mode when Symmetric phase switched on
Bug fix: CAT MU command and MM (when auto update enabled) loaded previously saved state (VFO etc)
Bug fix: On first installing 1_04_000, hung with message "Radio load"
Bug fix: Virtual U3S would not run

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