5. Flash Images
Step 1, unzip RKDevTool_Release_v3.15.rar
on Windows.
Step 2, open RKDevTool_Release\RKDevTool.exe
![open RKDevTool.exe](_images/image077-1.png)
Step 3, connect PC and development board with Micro USB cable, keep pressing the Recovery key on until the PC shows Found one LOADER Device, then release the key.
![EM3566 update](_images/EM3566_recover.jpg)
![loader mode](_images/image078.png)
Step 4, click Upgrade Firmware -> Firmware, select
update.img
. Click Upgrade to flash.
![update](_images/image079.png)
![update image](_images/image080.png)
User can also update the firmware separately.
Step 1, Select the checkbox on the left.
Step 2, Click the column on the right side for the path of the file want to flash.
Step 3, Click Run to flash the image.
![Debian update firmware separately](_images/image081.png)
![download](_images/image082.png)