User Manual

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LHT65 Temperature & Humidity sensor 30 / 40
5. FAQ
5.1 How to upgrade the firmware?
The LHT65 is shipped with a program cable, which is used to upload image to LHT65 for:
 Support new features
 For bug fix
 Change LoRaWAN bands.
Video Instruction is here: https://youtu.be/0xpSWTCuDGQ
The latest firmware and changelog can be found at below link:
http://www.dragino.com/downloads/index.php?dir=LHT65/Firmware/
Below shows the hardware connection for how to upload an image to the LHT65:
Note:
1) There are different version ST-Link v2. The white one as below is the most stable and
recommended one.
2) Some ST-Link v2 version like below white one has issue on uploading, in such case, try to short
pin19 (VDD 3.3v) and pin 1/2 (TVCC) of it.
Connection:
 ST-LINK v2 GND <--> Dupont black pin