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Message: [QUOTE="jcwsmith, post: 212551, member: 11911"] Does anyone know how to enter the Program Update Mode, also known as Recovery Mode on an Epson WF-3640? This is to back up the firmware to an older version, which I have found, so that all cartridges will be recognized. I made the mistake of allowing the newest firmware "upgrade" and now, contrary to most users' experience, the printer won't recognize brand new Epson cartridges which I bought in hopes of solving a print quality problem. Yet it still recognizes the off-brand cartridges which seems very self-defeating for Epson. I have found instructions for entering Recovery Mode for other models but they are not applicable to the WF-3640 and I have guessed at a number of startup combinations to no avail. Thanks for any relevant help. [/QUOTE]