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EcoDuck

WF-3640 WIC Firmware Downgrade Not Working

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I bought a firmware flash key this morning.  To my suprise, the Epson firmware can't be flushed.

Do you guys know what is the problem?  The WIC behaves like usual: download, install, then says the firmware is uploaded.

The printer will think for a while, then display this "ROM is not writable".  

 

 

IMG_6172.jpg

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Good day. Unfortunately, Epson started to block specific old versions of the firmware on the new devices, firmware from the WIC could not be flushed on your printer, you need to use chipless version from the Chipless Solutions. If printer is already erased previous firmware before checking and blocking new one, you can restore functionality using free recovery firmware that you can enable via settings.

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Thanks for the reply.  There is no firmware for WF-3640 at Chipless Solutions.  Could you post it there, please?

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