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WF-3640
WF-3640
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WF-3640 WIC Firmware Downgrade Not Working
WF-3640
replied to
EcoDuck
's topic in
ROM is not writable
I ran into the same exact problem as the in the begining on this thread. Same Black screen with white letters ROM IS NOT WRITABLE.
May 15, 2020
7 replies
WF-3640 WIC Firmware Downgrade Not Working
WF-3640
replied to
EcoDuck
's topic in
ROM is not writable
I am having the same problem here I bought a key yesterday as the software version 5.57 said it supported firmware downgrade for my printer model wf-3640 with the purchase of a firmware key. Has this issue been fixed?
May 13, 2020
7 replies
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