I've been working with The Dashcam Store over the last 8 months or so on a recurring problem with my camera constantly going into the "check SD card" mode or resetting itself at random times. I've sent it to them twice and they stated they replaced the unit on the second shipping. I've tried getting a new SD card (Samsung card recommended on their site) and then after a short period the problem started again. I've reformatted the card multiple times using the BlackVue software with no improvement. I downgraded the firmware from the most recent version to the previous, didn't fix it. Finally I ordered a new BlackVue SD card 64G, that worked for a month and now again, every 5 minutes I start getting the "check SD card" message over and over. I emailed them concerning this issue but I'm convinced now that there's an issue with the 650 itself, not necessarily mine alone since they supposedly changed it. Does anyone have any insight on similar issues?