I have the KS-9’s with the firmware upgrade but am still having to do a lot of work with getting Bluetooth to work easily. I admit to generally pushing my technology to its limits but here all I am asking is the the KS-9’s connect to whatever device I am using at that moment. I have a PC, and Android 6 phone and an iPad Air2. I have to admit that the iPad gives the least trouble but they all demand that they have exclusive access and often as not that they be forgotten and re-paired every time. This is tiresome and disappointing. Because it is all so random I can’t say for sure which is worse, the PC or the Android. The iPad loses points because it constantly turns Bluetooth on every morning thus draining my battery if I am unwittingly connected but not using audio. I will say that when it works it is generally great apart from phone calls which often are spoiled by a weird garbling.
You’re ignoring this member’s posts.

