Attempting to update firmware this evening since the phone app won't stop bitching about requiring an update. Pull the SD card, drop on the k2.bin file, safely eject the SD card reader from the computer it's plugged into.
Plug the SD card back into the k2 DVR, power the system up, nothing happens. No flashing red LED, just the standard bootup. App is still complaining about out of date firmware. Except now the SD card in app shows 'ERROR' and 0KB in size.
Power down the DVR, pull the SD card, plug it back into the card reader, and wow... now the SD card can't be read at all and DISKPART doesn't even see the disk.
I am so sick of fighting with your garbage hardware. I have DVRs from other manufactures in my vehicles, even on my bicycle, and none of them give me the hassle that your poorly engineered overpriced barely functional time vampire does.