title: Android SDK - Install system image packages offline
body: <p>due to IT restrictions I cannot use to package-install-automation of the Android SDK.</p>
  
  <p>To be able to create an emulator in Androids' AVD manager, I first of all need a system image for my target device.
  But regarding the below screenshot I haven't installed any.</p>
  
  <p>So can anyone tell me:
  1. where to get an system image for Android 6.0 API Level 23
  2. how to install this system image <strong>manually/offline</strong></p>
  
  <p>Thank you in advance!</p>
  
  <p><a href="https://i.stack.imgur.com/TwvtJ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TwvtJ.png" alt="enter image description here"></a></p>