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Erase eMMC or SPI Flash

Enter to Maskrom Mode​

  1. Remove the microSD card from the base Board
  2. Simultaneously press and hold the Maskrom Button (SPI Flash) and Maskrom Button (eMMC) on the CM3I.
  3. Connect a PC host from the OTG port using a USB-A to USB-A cable
  4. Connect the power supply, you can enter the MASKROM mode
cm3i modulecm3i module

Erase eMMC​

  1. Generate zero.img

    dd if=/dev/zero of=./zero.img bs=1M count=64

  2. Make sure the host recognises Maskrom

    sudo rkdeveloptool ld
    DevNo=1	Vid=0x2207,Pid=0x350a,LocationID=109	Maskrom

  3. Flash Loader

sudo rkdeveloptool db
  1. Erase eMMC
sudo rkdeveloptool wl 0 zero.img
  1. Reboot
sudo rkdeveloptool rd

Erase SPI Flash​

  1. Make sure the host recognises Maskrom

    sudo rkdeveloptool ld
    DevNo=1	Vid=0x2207,Pid=0x350a,LocationID=109	Maskrom

  2. Flash Loader

sudo rkdeveloptool db  rk3588_spl_loader_v1.15.113.bin
  1. Erase SPI Flash
sudo rkdeveloptool ef
  1. Reboot
sudo rkdeveloptool rd

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