Good Day people, as some of our followers who have read our blog know I drive a 2011 Chevy Tahoe and have had some radio issues in the past. The original radio eventually died about 6 months ago and forced me to invest in a new system, the Pioneer App radio 4 or the SPH-DA 120. This system has been great but had a couple of bugs that would occasionally happen such as not playing any sound when Iphone was hooked up; not displaying album art; running slow, or having choppy a bluetooth connection. I searched the internet for a few days about the issues that I was having and came across a software update version 1.11 that was released in December 2015. After locating what version of software my unit was currently running, it was realized that my unit was on version 1.06 and had not received the last 3 updates all of which addressed system stability and bug fixes. So I immediately got to updating the system from Version 1.06-1.11 and hopefully this does the trick!