Updating Epson WF-C5210 to Chipless Firmware

[Nguyễn Nhật Tiến]

Problem with WF-C5210 Printer Firmware​

Background​

I've have a WF-C5210 that I successfully installed chipless firmware, that printer had firmware before Epson's update on 10-11-2019.
I recently bought another from Dell, it has a later serial number and apparently has the updated firmware because when I tried to update
the firmware, it failed.

Possible Solutions​

I tried Eric's update and it also failed to update the C5210 printer from Dell. Anyone has any ideas?

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