Installation Issue

Hi, I'm not sure if it's something I'm doing wrong, but I can't seem to get this to boot on my RPi 4b.

The first time I tries I got the status led blinking 4 times, so I had a look and saw that I may need to update the firmware of the pi. I was able to flash pi OS onto the SD card and perform the firmware update via SSH, reboot, confirm everything was up to date, and shutdown gracefully.

I then wiped the SD card and flashed Tesla Android on it, and when I boot I just get the status LED blinking 7 times, which seems to mean it is unable to find kernel.img.

I can flash pi os back onto the same SD card and boot fine, but every time I flash Tesla Android I get the same thing. I've tried ising Pi Imager and Balena Etcher.

Please let me know if there's someting I've missed or something I might be doing wrong.