Wltfsm-146gn Firmware Update May 2026

If you manage dozens or hundreds of wltfsm-146gn modules, follow these enterprise-grade recommendations:

import serial
ser = serial.Serial('COM5', 115200, timeout=30)
ser.write(b'UPDATE USB\r\n')
with open('wltfsm-146gn_fw_v2.6.4.bin', 'rb') as f:
    ser.write(f.read())
print(ser.read(100).decode())

Previous firmware versions (v2.5.1 and earlier) on the wltfsm-146gn exhibited a memory leak after 720 hours of continuous operation. This caused the module to reset unexpectedly. The v2.6.4 wltfsm-146gn firmware update patches that leak, extending MTBF (Mean Time Between Failures) by 40%. wltfsm-146gn firmware update

Most modules require a specific hardware sequence: If you manage dozens or hundreds of wltfsm-146gn

You should see a prompt like:

WLTSM-BL> 

or

U-Boot 2019.07 (wltfsm-146gn)

By: Technical Support Team
Last Updated: October 2024 import serial ser = serial