Soft brick

I think I might have bricked my phone. I was trying to run the "asan_device_setup" utility from AddressSanitizer, and now when I try to turn it on, it shows the LG logo but after that the screen goes black, and the led starts blinking red.
If I try to go to recovery mode, I select "Yes" to all prompts, but after it supposedly "Factory Resets", it stays the same.
I can also open "Download Mode", but I don't know what to do with that! I don't know my exact model, is there any way of finding that out?

Thanks!