SunnyPilot bricked my device after one day

Update

I sent my device back to comma for an RMA. They originally charged me $100 because the issue happened while I was on a fork. However, they refunded me the $100 and have sent the device back to me. This indicates that it may have been a hardware issue and they couldn't find definitive proof that it was caused by SunnyPilot.

Original Post

I had my Comma 3 on the stock openpilot software for a couple weeks, and decided to try SunnyPilot. I installed the release-c3 branch yesterday, and was able to use it for about a day. I was even using it successfully this morning. But this evening, when I turned on my car, the Comma went into a cold boot rather than just jumping into the camera view. Then I got the message "Connecting to sunnylink" or something like that. My device isn't connected to the internet, so that process failed.

When the device finally booted up, it showed the camera view, but when I tried to activate Cruise Control, I got the error message "Radar error, restart your car". The exact same process happened when I did restart my car. When I got back home, I took the comma inside to try to uninstall sunnypilot and install the stock openpilot, but the device is now fully bricked. The screen doesn't turn on when connected to power. I'm going to try flashing the software, but this is just a warning to anybody messing with forks. My car is a 2021 Kia Niro btw.