Tag Archives: Key firmware Epson EP-978A3

How To Downgrade Firmware Epson EP-978A3

Why Use Epson EP-978A3 Firmware Key – Epson EP-978A3 downgrade firmware key: this is required when NON-ORIGINAL ink cartridges are NOT recognized by the printer. This is because printers’ firmware has been updated from the Epson server to the newest firmware where not original ink cartridges are forbidden to be …

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