Dome U Camera Pro Firmware Issue Sept 2022

I recently purchased this camera and believe it may have become disconnected during a firmware update. As a result, the camera is bricked in a status with the yellow light solid and does not allow for any resets, regardless of the length of time I hold the reset button down for.
I am unsure where to find the firmware for this device to do the manual update via SD card - and am unsure on how to process that in any case, so any support you may share is so greatly appreciated. 'Yi Dome U Camera Pro, black model.


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Thank you.