If you have had an Epson printer, perhaps you have followed some of the drama over Epson firmware updates that prevent using cheaper third-party ink cartridges. I’m starting this thread to document how to do firmware rollbacks, including information on how to acquire the old firmware, which isn’t always readily available on the internet anymore, because why would Epson maintain easy download pages for people who don’t want to pay the robber barons.
In my case, I have an Epson WF-4820 that I needed to roll back to an old firmware version. I’ve uploaded the firmware here to make sure that it is preserved for future generations. FWCJ06TL_SH13LC.exe (36.7 MB)
There are various threads on reddit and other places recommending specific firmware versions for various Epson printers. Often, these firmware versions can no longer be downloaded directly from the Epson support site. A bit of digging, however, led me to figure that that they are all still on https://ftp.epson.com/drivers/--insert firmware name here–