rkdeveloptool

List devices

$ rkdeveloptool ld

$ rkdeveloptool db [loader.bin]

$ rkdeveloptool wl [0] [image.img]

$ rkdeveloptool rfi

$ rkdeveloptool rd

$ rkdeveloptool rl [0] [size] [output.img]

rkdeveloptool command [options]

rkdeveloptool is a Linux utility for flashing firmware to Rockchip ARM SoC devices (RK3399, RK3328, RK3288, and others) via USB. It communicates with the device's bootrom when the device is placed in maskrom mode, a special recovery state entered by shorting specific pins or holding a button during power-on.
The flashing process typically involves two steps: first loading a boot loader with the db command, then writing the system image at the appropriate offset with wl. The tool can also read back flash contents, query flash chip information, and erase the entire storage. It serves as an open-source Linux alternative to Rockchip's Windows-based flashing tools.
Root or appropriate USB permissions are required to communicate with the device. The ld command verifies that the device is detected and in the correct mode before proceeding with write operations.

ld

List devices.

Download boot loader.

Write image at offset.

Read to file.

Read flash info.

Reboot device.

Erase flash.

Root required. Device must be in maskrom. Wrong images can brick.

rkdeveloptool is developed by Rockchip for flashing firmware to their ARM SoC devices via USB.

dd(1), fastboot(1)