I also ran into the issue, that the printer does not recognize my cartridges anymore.
After reading and surfing around, I found that Epson blocks 3rd party cartridges with there last firmware update.
So I decided to downgrade again, but the printer display always says 100percent done, but WIC-Reset never ends.
I tried this several times, no luck.
So I decided to install the original firmware once again to be sure, no errors occurred, but the Epson-Firmware-Updater-Tool begins uploading, but stops at 47% and never continues.
In several threads, I read that you must not have any Error-messages in the front-panel, so that an Upgrade/Downgrade works. Is this correct, and isn't there a way to pass this, because I don't have any original Epson-cartridges anymore.
Regards,
Luc