Download firmware Search this link for the firmware version you want to download: https://resource.heltec.cn/download/Sensor%20Hub%20for%20industry
Enter configuration mode Press and hold the on key until the key indicator turns orange. Then the device enters the configuration mode.
Update Firmware Click
OTA Update, select the firmware version you downloaded at first from the options that pop UP, and click
After the upgrade is complete, all configurations will be reset. You need to go back to the configuration page to complete the configuration