Vim2 how to flash android-tv

My vim2 development board is pre-installed with aosp’s android. I now want to install the vim2-android-tv-sc-user-atv-v1.0-20200731.raw.img firmware. Can anyone guide me? Thank you so much.

Hello @wei_zhong
please check this:

Thank you very much for your reply. This firmware should use oowow, because it is in the format of raw.img instead of emmc. My board is installed with Android by default. Is there any solution?

@wei_zhong please check upgrade mode procedure to boot oowow