i am using lumia630. I got GDR2 update. thanks to use given below steps.
How to get Windows Phone 8.1 Update 2 on Lumia devices without Windows 10 Technical Preview
Step-1: Go to Settings then Phone update and uncheck the Automatically download update if my data setting allow option
Step-2: Download and sign up for the Windows Insider Program on your phone to get the 8.1 Update 2
Step-3: Set it to Fast Track and check for updates in Settings
Step-4: You should see an update pop up or a notification in Action Center. Download the update
Step-5: Once the download starts, head over to the app list and uninstall Windows Insiders to prevent Windows Phone 10 update
Step-6: Do not click install, just hit Show details option and verify the update version
Step-7: If the build number matches, install the update.
Your device should be on Windows Phone 8.1 Update 2.