Flash the Image

This section details the steps for flashing your device. Ensure you’ve completed the prerequisites and set up the fastboot tool as described in the previous section.

Note

To obtain the latest firmware image, either build it from source or download a prebuilt image.

See previous sections for details on building or downloading the image.

Connect the Board

Flashing Grinn GenioEVB-700 requires:

  • external 12V power source,

  • both Download USB and Serial Console USB connected to the host PC.

USB connections of the |BOARD_NAME|

Flashing

In terminal, go to the directory containing image files and use the following command:

genio-flash -d 2

This command will write the image from the current working directory into the Grinn GenioEVB-700.

Note

The -d 2 argument allows to automatically put the board into download mode.

It can be omitted, however then the board must be put into download mode manually, as listed in the section Download Mode.

Successful flash procedure will report multiple erase and write cycles resulting in no errors.

Device Tree Blob Overlays

By default basic video, GPU and APU DTBOs are loaded.

All available DTBOs can be listed using the following command:

genio-flash --list-dtbo

To select a DTBO, use the --load-dtbo switch.

Loading DTBO example

To flash the Grinn GenioEVB-700 with DTBO for Sony IMX214 cameras connected to CSI0 and CSI1 the following command can be used:

genio-flash -d 2 --load-dtbo camera-imx214-csi0-imx214-csi1.dtbo

genio-flash also provides interactive interface to select DTBOs which can be invoked with the -I switch.

Download Mode

The Grinn GenioEVB-700 can be put into download mode manually using physical buttons.

Buttons of the |BOARD_NAME|

The following sequence should be used:

  1. Press and hold the Download button.

  2. Press and release the Reset button.

  3. Keep the Download button pressed until Erasing 'mmc0' is shown.