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Old 07-10-2016, 08:51 AM   #356
knc1
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Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
Quote:
Originally Posted by Don999 View Post
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
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.

Last edited by knc1; 07-10-2016 at 09:37 AM.
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