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DLP lightcrafter 4500 USB烧录固件时提示“Checksum mismatch: Expected 89af4b1;Received 89af603”

Lightcrafter4500光机根据“DLP Lightcrafter4500 Flash Programming Guid.PDF”上面的烧录教程需要两步:第一步使用UM232烧录器;第二步:USB识别之后使用lightcrafter4500 GUI中的烧录功能第二次烧录bin镜像。当USB烧录镜像完成之后出现“Checksum mismatch: Expected 89af4b1;Received 89af603”的对话框提示(如图所示),请问是什么原因造成的,如何解决这个问题?