Now the device should boot from the SPI flash now. rkdeveloptool wl 0 /path/to/uboot-trust-spi.img Write the packed SPI image of u-boot and trust.img, start to write from offset 0. If you don’t have it, you can download it from here rkdeveloptool db rk3399_loader_spinor_v1.15.114.bin On your PC, run the rkdeveloptool rkdeveloptool ld # List the deviceĭevNo=1 Vid=0x2207,Pid=0x330c,LocationID=305 Maskromĭownload the SPI loader (flash helper, important) to init the ram and prepare the flashing environment etc. Now we can proceed the next step to flash.It means the device is in maskrom mode now. Now on your Linux PC, lsusb command show show the following usb devices Bus 003 Device 005: ID 2207:330c Remove the cable and disconnect PIN23 and PIN25.If the SPI flash already contains a bootable bootloader, you need to disable the SPI flash at boot time by shortcut the SPI1_CLK to GND. Plug the USB Male A to Mail A cable to ROCK Pi 4 OTG port(the upper USB3 port), the other side to PC.Power off the board and remove any bootable storage media, remove microSD card, remove eMMC module.To boot ROCK Pi into maskrom mode is simple, you don’t need to press any key You should install pkg-config libusb-1.0 brew install pkg-configīoot the board to maskrom mode Empty SPI flash Install build dependency: brew install automake autoconf libusb To build rkdeveloptool on macOS, you need homebrew(or similar package manager) to install required packages. Now you have rkdeveloptool executable at the current directory. You should install pkg-config libusb-1.0 sudo apt-get install pkg-config libusb-1.0 configure: line 4269: syntax error near unexpected token `LIBUSB1,libusb-1.0' If you encounter compile error like below.

Install build dependecy: sudo apt-get install libudev-dev libusb-1.0-0-dev dh-autoreconfĬlone the source code and build: git clone To build rkdeveloptool on a debain based Linux distribution, follow the instruction below: Make sure rkdeveloptool is set up on host computer Linux

USB Male A to Male A cable(important) USB-C has been seen as not working, an adaptor for USB-C to USB-A has worked.

Recommended: What is ROCK Pi 4 ? RockPi 4 – Write image to SPI flash from USB OTG port Requirement The PC tool we use to communicate with ROCK Pi in maskrom mode is rkdevelop tool, an open source tool by Rockchip. ROCK Pi supports maskrom mode, which is a special running mode the CPU is waiting for command from USB OTG port. In this tutorial we (RockPi 4) write image to SPI flash from USB OTG portt.

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