Booting QNX image on Raspberry Pi 4 get stuck in rainbow screen

I am following a tutorial (gitlab.com/qnx/quick-start-images/raspberry-pi-qnx-8.0-quick-start-image/-/wikis/Getting-Started) to flash QNX image onto Raspberry Pi 4. I copied the QNX image (com.qnx.qnx800.quickstart.rpi4) using Raspberry Pi Imager to the SD card without any issue. When I insert the SD card into the Raspberry Pi, I only see the rainbow screen without seeing the main QNX welcome page.

I am using a 32GB SanDisk SD card and a Raspberry Pi 4. I just need some help to troubleshoot the issue.

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