calibration mic

I assumed that it would be possible to use a Sonarworks mike with REW because some people stated that they did that on other forums. But now I found an old thread here that says it's not possible to convert the mic calibration file for REW? Is that still true? EDIT: I just discovered that there...

I have a Earthworks 480M mic. I'm guessing it may have came with our old DBX driverack. I contacted the Earthworks and DBX and there is no calibration file available for the mic. They say it is pretty flat. If you were me, a novice trying to help fix sound issues for my church, using REW for the...