cm4 not booting after increasing gpu memory to max

[ShakhzodbekYuldoshov]

I have a 1 cm4 device. I increased GPU memory from setting to max 820 or something I cannot remember. It asked to reboot. After rebooting the device's display became rainbow colored square display. The device is not turning on. What should I do to make it work?

[Erol444]

Hi @ShakhzodbekYuldoshov ,
I have never tried it, but you might want to flash a new image to the device, tutorial here. Let us know if that resolves the problem.
Thanks, Erik

[ShakhzodbekYuldoshov]

Thank you for your answer. Yes, I wanted to flash a new image. But when I put the sd card into the device it was using an old image. Then I found this forum discussion and it really helped to me to solve that issue: https://discuss.luxonis.com/d/612-how-to-reset-the-oak-cm4/7
It is a combination of a tutorial that you have and a youtube video about "How to flash the eMMC on a Raspberry Pi Compute Module 4"