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What is a Finished Image ​

Simply put, a .img file is a complete system image. You can flash this single file to run a complete system. This type of image is called a finished image.

Such images are larger in size, but are convenient to flash.

For example: update.img.

Install Rockchip Driver ​

Go to the Download Center 🚀 and enter the network disk.

Download DriverAssitant_v5.14.zip from the Development Tools section. Extract it and double-click DriverInstall.exe to install:

Obtain Images ​

There are two ways to obtain images:

  1. Directly go to the Download Center 🚀 and enter the network disk to download the images you need. This provides ready-to-use images that can be flashed directly.

  2. Compile the system SDK yourself to generate the update.img image, then flash it.

Flash Using Tool ​

Download Tool ​

Go to the Network Disk Development Tools directory and download the RKDevTool_v3.32_for_window.zip archive.

Interface Introduction ​

After extracting, it looks like this:

  1. RKDevTool.exe: The flashing development tool itself
  2. Development Tool User Guide_v1.0.pdf: The usage documentation for this tool. It is recommended to read it in detail as it helps understand this tool.

Double-click RKDevTool.exe to open the software. There are three main categories:

Download Image: Function used when downloading distributed images.

Upgrade Firmware: Function used when downloading finished images.

Advanced: Advanced features provided by Rockchip, including erasing storage, unpacking img images, etc. For details, refer to the Development Tool User Guide_v1.0.pdf document.

Firmware Selection ​

Go to the [Upgrade Firmware] page, then click [Firmware] and select the .img image.

Enter Loader Mode ​

Power the development board and connect the data cable to the OTG Type-C interface:

  1. Press and hold the REC button (do not release)
  2. Then press the RST reset button once
  3. After waiting for two seconds, release REC

Tip

If the REC button is held for too long, it will enter MASKROM mode. This has no impact, and under normal circumstances, you can also flash images directly in MASKROM mode.

The development board has entered Loader mode. In this mode, we can flash images to the development board.

Flash ​

Once everything is ready, click [Upgrade] and wait for the image download to complete.

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