after updating to the latest firmware 5.0.052S_1216, a popup message appears more than several times per day, maybe once per hour. More than a few people have complaint about the popup but no solution so far.
http://forum.le.com/us/index.php?threads/ota-x3-u3-5-0-052s-new-ota-update-for-x3-55pro-and-max3-65-tv.4436/page-2

I don't want to wait for someone to fix the problem; I want to go back to the previous firmware. Please send me the previous firmware file. I'm very familiar with installing firmware offline for this TV; I've done it several times successfully.