I bought McBub: Low-Priced , USD 79.99, 7 Inch Android 2.3 Tablet PC AllWinner A10 CPU 1.2GHz 512MB DDR3/ 4GB Storage Ultra-thin WIFI HDMI White (CN110217) 7" Tablet from mcbub.com. It came with ICS 4.0.3. Is there a way I can downgrade this to 2.3 firmware? ICS feels sluggish and buggy and apps crash a lot. The model no. listed in the Settings section is A10-MID. Is there a 2.3 firmware avail. for this model?