Oh, I see. Reflashing is a pretty serious measure, and we only recommend it when nothing else works. Updating the firmware directly in Emlid Flow is a safer choice.
We still have the base logs and RTK results. The rover’s accuracy depends on the base position. Did you average the base in Single mode? If so, the results are of relative accuracy.
To get absolute accuracy, you can submit the base log to an online post-processing service. Once you get the precise coordinates, you can shift your survey results following the steps in this tip. Just ensure the PPP result and the base position from CSV are in the same coordinate system.