title: Which properties of android.os.Build are fixed?
body: <p>I require the list of fixed properties of <code>android.os.Build</code> class. I've obtained the list from <a href="https://stackoverflow.com/questions/3103196/android-os-build-data-examples-please">here</a> I bold those that I know are fixed. By fix I mean no change by firmware update, reset factory, ...</p>
  
  <ol>
  <li><p>android.os.Build.VERSION.RELEASE      //The current development
  codename, or the string "REL" if this is a release build.</p></li>
  <li><p><strong>android.os.Build.BOARD</strong>                 //The name of the underlying board, like "goldfish".    </p></li>
  <li><p>android.os.Build.BOOTLOADER            //  The system bootloader
  version number.</p></li>
  <li><p><strong>android.os.Build.BRAND</strong>                 //The brand (e.g., carrier) the software is customized for, if any.</p></li>
  <li><p><strong>android.os.Build.CPU_ABI</strong>               //The name of the instruction set (CPU type + ABI convention) of native code.</p></li>
  <li><p><strong>android.os.Build.CPU_ABI2</strong>              //  The name of the second instruction set (CPU type + ABI convention) of native code.</p></li>
  <li><p><strong>android.os.Build.DEVICE</strong>                //  The name of the industrial design.</p></li>
  <li><p><strong>android.os.Build.DISPLAY</strong>               //A build ID string meant for displaying to the user</p></li>
  <li><p>android.os.Build.FINGERPRINT           //A string that uniquely
  identifies this build.</p></li>
  <li><p><strong>android.os.Build.HARDWARE</strong>              //The name of the hardware (from the kernel command line or /proc).</p></li>
  <li><p>android.os.Build.HOST  </p></li>
  <li><p>android.os.Build.ID                    //Either a changelist number,
  or a label like "M4-rc20".</p></li>
  <li><p><strong>android.os.Build.MANUFACTURER</strong>          //The manufacturer of the product/hardware.</p></li>
  <li><p><strong>android.os.Build.MODEL</strong>                 //The end-user-visible name for the end product.</p></li>
  <li><p><strong>android.os.Build.PRODUCT</strong>               //The name of the overall product.</p></li>
  <li><p>android.os.Build.TAGS                  //Comma-separated tags
  describing the build, like "unsigned,debug".</p></li>
  <li><p>android.os.Build.TYPE                  //The type of build, like
  "user" or "eng".</p></li>
  <li><p>android.os.Build.USER</p></li>
  </ol>
  
  <p>Please help me complete the list</p>