iPhone with iOS 10 not detected by xcode 8 beta or itunes
<p>I upgraded an iPhone 5 to iOS10.</p>

<p>When plugged in, it is not detected by neither xcode (organizer and whatnot) nor itunes.</p>

<p>Known facts :</p>

<ul>
<li>pluging the device to my mac makes the device battery charge. However the popup "trust this computer ?" does not show</li>
<li>I have xcode 8-beta installed</li>
</ul>

<p>What I've tried so far :</p>

<ul>
<li>tried with another cable</li>
<li>tried on other mac</li>
<li>same cable but another iPhone (ios9.x) : detected as wanted (itunes &amp; xcode)</li>
<li>reset main settings</li>
<li>reboot the ihpone in recovery mode : still nothing</li>
</ul>

<p>Another side-problem is that I can't downgrade to iOS9. If I understand correctly the procedure, one has to plug the device to iTunes in order to downgrade to iOS 9. </p>

<p>I think the problem is this device, prior to upgrading to iOS10, was not registered neither in iTunes nor xcode. Maybe that's the problem ... not sure :( And no idea what to do next.</p>