WyzeCam v2 dead?

My v2 cam stopped connecting to my wi-fi network. I tried a couple of times to reset it and it kept failing to connect. My other cams are all working fine. I tried to factory reset it by holding down the reset button for 10 seconds and now it’s stuck with a solid yellow light. I had read that it can sometimes take a while - up to 5 minutes - so I left it like that overnight and it’s still solid yellow.
I’ve tried flashing it with the latest firmware from a microsd card, but it won’t seem to enter flash mode either.
Any other suggestions?

I was finally able to recover the camera by reflashing it. I discovered that my earlier attempts to flash had failed because I was formatting the microsd card as exFAT rather than FAT32 and I had forgotten to rename the file to demo.bin.