Wltfqq-124gn Firmware - Upgrade

Newer firmware can reduce sleep-mode current draw (e.g., from 2.5µA to 1.1µA), extending battery life by months.

In sleep mode, use a multimeter to verify current draw matches the release notes spec.

Tools needed:

Procedure:

  • Connect the USB-to-TTL to your PC

  • Open the programming tool
    For example, using wlupdater (vendor tool):

    wlupdater -p COM5 -b 115200 -f WLTFQQ-124GN_v2.1.0.bin

  • Start the upload

  • Exit bootloader mode