ZWO released an ASI 1600 Pro two weeks ago that has an DDR memory buffer to solve the amp glow problem. But there won't be an upgrade for 1600MM-Cool to Pro (
zwoug.org/viewtopic.php?f=21&t=7528
). I bought the camera about a month ago, so maybe I will ask my dealer if there is an option to replace it with the new Pro model.