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

Erase eMMC

Linux/MacOS

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   

4. Erase eMMC

sudo rkdeveloptool wl 0 zero.img

5. Reboot

sudo rkdeveloptool rd

Windows

Open the RkDevTool tool and we'll use the RkDevTool to erase

1. Make sure the host recognises Maskrom

2. Click on the button to the left of "Download" to select the Loader

3. Click "Download" to flash the Loader (Go to download page to download file)

4. Click "ReadCapability" to get current storage

5. Click on "Switch storage" to switch the storage to eMMC

6. Click the "EraseAll" button to erase the eMMC

7. Click "ResetDevice"

Erase SPI Flash

Linux/MacOS

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  rk3588_spl_loader_v1.15.113.bin 

4. Erase SPI Flash

sudo rkdeveloptool ef

5. Reboot

sudo rkdeveloptool rd

Windows

Open the RkDevTool tool and we'll use the RkDevTool to erase

1. Make sure the host recognises Maskrom

2. Click on the button to the left of "Download" to select the Loader

3. Click "Download" to flash the Loader (Go to download page to download file)

4. Click "ReadCapability" to get current storage

5. Click on "Switch storage" to switch the storage to SPINOR

6. Click the "EraseAll" button to erase the SPI Flash

7. Click "ResetDevice"