Lark 150 Firmware Upgrade Tutorial

Updates:

1. Improved the UV Meter Display
2. Fixed the charging issue 
3. Solved the battery display and charging case LED display error
4. Routine bug fixes and user experience improvements.

Download Path:

V3.0.1.6

Notice: 

1.  This update is only for Windows 10 OS PC.
2.  Please do not take the Transmitter or Receiver out of the Case during the update.
3.  Please unzip the file to the C drive of your PC.
4.  Please do not disconnect the USB cable during the update.
   
5.  For the firmware version lower than 1.0.8.8, please first contact us and upgrade to V 1.0.8.8 first.
6.  Mac users could use some software to install the WIN 10 system and then finish this upgrade.

Steps:

1.  Driver Installation
   Open the folder 1-Driver and install the correct driver:
   
   

   
   
   

2. Upgrade Process

     2.1.1 Open the folder 2-HollylandTool_V1.0.0_20201210 and Run the software 6901_upgrade.exe

     2.1.2 Click Refresh and wait till the device is connected. 
             Then Select Upgrade, the system will upgrade automatically.

    2.1.3 The upgrade will be done when the battery display of the receiver screen turns to normal.