The EM3576 supports Normal mode and Upgrade mode.

Normal mode	Upgrade mode
Normal mode is the normal startup process	Loader mode Maskrom mode

1. Loader Mode

In Loader mode, the bootloader will waiting for host commands for firmware upgrades.

1.1 Entering via Hardware

❶ Open RKDevTool\RKDevTool_Release\RKDevTool.exe on Windows.

❷ Keep pressing Recovery key and power the board until the windows PC shows Found One LOADER Device, then release the key.

Enter Loader mode

1.2 Entering via Software

❶ Connect Type-C cable between host PC and development board.

❷ Power on.

❸ After the system boots up, execute command use ADB Shell:

reboot loader