I just purchased a new vehicle and transferred my SGGCX2PRO to the new car, adding an SGR291CAM rear camera to my system at the same time to better capture the idiocy I witness every day in Detroit. I reused the old MEKNIC hardwire kit from my previous car and have the same Transcend Premium 400X 32GB microSD card. The dash cam powered on fine and I had a picture in a picture from the new rear camera and a green GPS signal. I had initially pulled power off an always-on fuse so I could enable the parking mode - forgetting that it isn't available unless I use the official SG hardwire kit. While I had it on, I checked all my settings, updated the time, turned on the speed stamp, and changed the startup delay from 15 to 5 seconds since I had frequently been missing the first few seconds of my drive in my previous vehicle. Since I couldn't enable the parking mode, I swapped it off of my dome light circuit and onto my 12V outlet circuit that only works with the ignition on. I turned on the ignition and the red REC light and white POWER lights came on for a few seconds before a flicker from the red MIC light and then everything went out without the screen ever coming on. I cycled the ignition a few times with the same result. I then pulled out the 12V outlet cord that came with the camera but had the same result. I unplugged the rear camera and GPS and tried a couple more times then removed the SD card and tried a couple more times, all with the 12V plug, but had the same result. Reading other posts, it sounds like updating the firmware fixes some problems like this, however, the firmware instructions require the card be formatted in the camera which I cannot do with the camera not powering on. Am I likely to cause any additional damage if I give the firmware update a try using a computer formatted card? Any other troubleshooting recommendations?