Rockchip Provide Tools for Upgrade firmware to on board storage media like eMMC/NAND/SPI flash.
Please chose a appropriate tool for your project.
|Rockchip official release with in SDK, Linux vesion
|open source version of upgrade_tool
|open source, maintained by third party
|official release within SDK, Windows Only
If you are using a SD card for firmware storage, then you don't need the Tool for firmware upgrade, for example, you can use 'dd' command in Linux OS.