siacelestar 0 Report post Posted May 22, 2020 Want to ask first before changing the firmware - Just acquired a WF-7720 (using 27 cartridge) through grey import but at where I live only WF-7721 (using T188 cartridge) is available... Will be using genuine cartridge as I am really after the pigment ink. After making chipless is it possible to use the T188 cartridge directly? Or is it possible to flash the WF-7721 firmware? Share this post Link to post Share on other sites
wic.support 30 Report post Posted May 22, 2020 Good day. Chipless firmware disables verification of the IC chips, you can use anything that can fit in the printhead. Share this post Link to post Share on other sites