Review on InkNI Eco-Friendly Ink Cartridge Set for Epson 702XL High Yield - Compatible with Workforce Pro WF-3720 WF-3730 WF-3733 Printer - Black Cyan Magenta Yellow - Pack of 4 by Alex Barr

Epson tries hard to get you to buy their overpriced ink. When you buy a printer, don't do the "normal" things and don't update the firmware or turn on automatic updates. There are two reasons. 1) The original ink that came with the printer won't work after the upgrade, and 2) these aftermarket ink suppliers probably won't work for you. If you have updated the firmware, you can roll back to continue using this aftermarket ink. Suppliers. For the firmware rollback process you will need a laptop and a USB cable to connect the printer directly to the laptop (finding the cable in my closet was the longest part of the rollback process). In fact, you are running the same process twice, so be patient. You can go to YouTube. Type downgrade epson 3720 firmware in the search box. (Follow the video instructions) I downloaded the firmware to a USB drive and created all the files on the USB drive, so my C: drive was unaffected by the process.