My less than 24 hour old TI2 Polar went crazy on me too.
After updating to 3.0.1.15, my TI2 was going into edit mode at random but always in the modulation matrix edit page and kept selecting it's own sources and destinations! It locked the entire front panel and then froze completely, sometimes making the digital distortion noise too.
Just updated to 3.0.2.01 and it has thankfully been working fine since then.
