I have a IQ2+ panel that I bought 2 years ago that worked great for the first year and a half, but is now having problems. It started with the screen just turning black one night (while armed still showing a red LED) but unresponsive. I was able to power down the unit, but when powered back up the screen was fuzzy, dim, and double imaged. It would work, but after about 2 weeks it went black again and I would get a message that the panel was offline. I can reset it by powering it down, but it always comes back fuzzy again and will eventually lose signal and go black. I have replaced the battery and am using the supplied power supply. Can I try to update to an older firmware to get it working again? The system was on auto update and I see others may have had issues with similar effects.