So I purchased the nerd tool 1 and tried programming a sensor purchased from the bay, it wont program and I am willing to try a new "blank" chip as this one may have been used. Has anyone bought these individually and had success programming? Can you share the chip(s) your using. My particular case is for an A2442. The chip is marked LXN 0032, I haven't had any luck sourcing the chip based on these markings. Thanks in advance for any help.