Maybe try another card or find some way to do the equivalent of the Linux long format on whatever OS you use. Years ago a non booting disk with a corrupt MBR could be repaired with the DOS command “fdisk /mbr”. The long format restores the MBR or whatever a SD card has. The firmware loaded and the camera works and upgrades! I suspect that the bad firmware from a failed upgrade corrupts the card to be not bootable (corrupt MBR?) if it is powered up with the card in and the reset button not depressed, even though the card can be read on another computer. Another long format and it fixed it again, this time I used a q-tip to hold the button more firmly. It then booted from the card, but my finger slipped off the reset button mid way. I then chose the option to do a long format of FAT32, erasing all the data on the card. I tried quick reformatting the card, but it didn’t help. I could see the demo.bin in the root directory when I put the card in my Ubuntu Linux computer. It would not load an image from the SD card, like yours. Since WYZE didn’t want the old one back, I experimented with it. ![]() ![]() It succeeded it’s first update worked fine. WYZE support couldn’t help me fix it so they sent me a new one. ![]() I had a similar, maybe same, problem with a new campan that failed the first upgrade before I even used it.
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