How to install L3+/L3++ firmware by sd card

1.Download the image:

2. Upload the image using this program:

Imager Program
Size: 12.6 MB

Before installing the sd card in L3+/L3++, de-energize it. Then wait for diodes start to blink, the firmware from the SD  set for 3 minutes, after blinking the red and green lights, turn off  L3+ and remove the SD card, hold down the reset button and turn on the power while holding the reset button until diodes start to blink at the same time.

3. After successful installation, install our firmware from our website, press CTRL + F5