KARSTEC ASTRANA - FIRMWARE CHANGELOG
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Version | Date       | Changes
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1.5.0   | 2026-09-25 | - New: holding the mode-down button for 2 s
        |            |   switches the headlamp off and remembers the
        |            |   mode it was in; the next press brings it back.
        |            | - More accurate battery level at high power (new
        |            |   battery model, calibrated on the real cell).
        |            | - Bluetooth updates are now confirmed when they
        |            |   finish, and the headlamp restarts cleanly.
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1.4.2   | 2026-09-16 | - The battery level no longer freezes for
        |            |   several seconds while the light is on.
        |            | - Recalibrated battery level estimate.
        |            | - Temperature protection reacts sooner.
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1.4.1   | 2026-09-15 | - Fixed: after connecting from many different
        |            |   phones, settings and statistics could stop
        |            |   being saved.
        |            | - Fixed: an interrupted mode save (lost
        |            |   connection) no longer mixes up later saves.
        |            | - Fixed: possible unexpected restart when
        |            |   Bluetooth switches off after disconnecting.
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1.4.0   | 2026-08-27 | - If the headlamp hangs while powering on (for
        |            |   example on an unstable supply), it now
        |            |   restarts by itself.
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