Quote:
Originally Posted by Don999
I tried to downgrade from 5.7.3.1 and 5.8.1, both failed.This device is factory
version 5.7.4, I bought it on 2nd july, 2016
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What firmware version was in use on the one that DID work?
Was the same method of file transfer used in all cases?
Does the file still pass the md5sum test or was it damaged while on the PC?
What PC OS?
That was Chinese-WinXP if I had to guess.