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DS90UB947-Q1EVM: DS90UB947

Part Number: DS90UB947-Q1EVM

http://www.ti.com/tool/DS90UB947-Q1EVM?keyMatch=DS90UB947&tisearch=Search-EN-Everything#technicaldocuments

如题:DS90UB947这块开发板在使用的过程中,出现上位机读不到947的现象,单片机附近的电源都排查了一遍,没有什么问题,947这颗芯片也都更换了,

还是读不到,就剩板载单片机了,苦于没有HEX文件,单片机也不敢随意更换,

到底该如何维修他,HEX文件能提供下吗。