If you have a XP 100, XP 200, XP 300, XP 400 or WF-2530 (which take the T200 cartridge) we recommended you do not update your printer on-line as this could cause your compatible cartridges to stop working. We are still looking into this matter and will post when we have more details. Please Contact Us if you wish to purchase the T200XL cartridges. Please be aware that due to changes in printer programming the ink levels for this particular cartridge might appear to be low or empty. It is indeed full and will print a full yield