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IB388 Firmware Version History

1.5

Release Date: May 12, 2026

  1. Bootloader for OTA updates.

  2. More accurate battery state-of-charge percentage reporting.

  3. Default battery sleep period (time period before entering self-discharge mode) changed to 72 hours.

  4. Battery fault state will wait 5 minutes before the battery turns off to allow time for NFC taps and other troubleshooting steps.

1.3.1

Release Date: January 23, 2025

  1. Battery fault state will go to deepsleep to prevent accidental over-discharge.

  2. When 2 batteries are installed in a drone and the drone is powered on, neither battery will enter charge or sleep state.

  3. Battery will enter normal state instead of sleep when charging is interrupted early.

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