title: How to install CyanogenMod using downloaded i777.zip file for Samsung Galaxy i777 (~Galaxy S2)?
body: <p>I'm trying to install CyanogenMod for my Samsung Galaxy i777 (~ Galaxy S2).
  1) I've installed CyanogenMod Installer apk
  2) The app redirected me to <a href="http://get.cm" rel="nofollow">http://get.cm</a>
  3) I found my i777 link which redirected me to <a href="https://download.cyanogenmod.org/?device=i777" rel="nofollow">https://download.cyanogenmod.org/?device=i777</a>
  3) There i was proposed to download <a href="https://download.cyanogenmod.org/get/jenkins/134244/cm-12.1-20151111-NIGHTLY-i777.zip" rel="nofollow">https://download.cyanogenmod.org/get/jenkins/134244/cm-12.1-20151111-NIGHTLY-i777.zip</a>
  4) This zip contains the files below.</p>
  
  <p>Also I've found and downloaded Windows Installer but it also redirected to donwload this zip</p>
  
  <p>Question: how to install CyanogenMod in this case?</p>
  
  <p>Thank you very much!</p>
  
  <p>i777.zip:
  install\,
  META-INF\,
  system\,
  boot.img,
  file_contexts</p>