Some of you may know that the Interop unlock is a full jailbreak for Windows Phone/Windows 10 Mobile devices, meaning you have access to every file and directory on the handset, and can run any arbitrary code. After the release of Windows 10 Mobile to public, Interop unlock methods have been around for quite a year now. Today, some folks at XDA Developers found a new method to unlock all the x50 Lumia series.

Before you go with the process, I remind you that this method is not for simple users, because it may damage your phone or eventually brick it. So unless you know what you’re doing, don’t do that and wait for a more simple and stable method.

Not me nor the staff of Windows Latest are responsable for any damage occoured to your device

Here’s the method:

  • Download the Windows Phone 8.0 SDK Lite from here. Once downloaded, install it on your PC
  • Enable Developer Mode on your device (Settings > Update & Security > For Developers)
  • Download the file from the Attached Files section here. Once downloaded, unzip the folder
  • Connect your Lumia device to your PC via USB
  • Open Application Deployment on your PC from the Start Menu or via Cortana/Search
  • On Application Deployment, click on the Browse button, browse to the extracted folder and select the vcREG_1_6_W10M.xap file. After that, deploy the app (make sure your device doesn’t lock itself)
  • Once the deployment is complete, open the VCReg app on your Lumia
  • Click the ellipsis menu from the app bar, and select the x50 Series Unlock button (if it shows an error about a missing Acer file, just ignore the error)
  • After that, click on the Step 1 button. Clicking on the Step 1 button will show a dialog asking you to do the following before clicking on Step 2:
    • Download and extract the from here
    • Open a CMD as Admin on the extracted folder
    • Now go to the extracted folder which we extracted earlier in the process
    • Copy the file acer.service.acersystemservice.spkg and put it in a folder inside that extracted folder (call it anything you like)
    • Then enter the following command: iutool -v -p “path to the folder that has acer.service.acersystemservice.spkg”  (In our case, the command was: iutool -v -p “D:\Windows\Interop\vcREG\acer” )
    • Once done, the device should reboot
    • After the device has rebooted, you need to copy the files newndtksvc.dll and ndtksvc.dll into your phone’s Documents folder (you can find both of the files in the extracted vcREG folder)
    • Now, open the VCReg app on your phone, go to the x50 Series Unlock page from the ellipsis menu and click on Step 2
    • The app will ask you to reboot your device, so go ahead and reboot it
    • Once the reboot is done, open the app’s x50 Series Unlock page again and click on Step 3
    • Lastly, you’ll have to reboot one more time
  • Now, you need to open the app again and go to the x50 Series Unlock page. From there, click on the “Live Interop/Capability Unlock” checkbox and hit Apply
  • After that, your device should now be interop unlocked

Once again, do not try this unless you know what you’re doing.

About The Author


19, living my life across United States and Italy. I am a software anaylst/programmer for a big IT company. One of my dreams is to join Microsoft, but in the meantime, I test builds and I make Windows 10 better everyday. You can get in touch with me at [email protected].