Interop unlocking is now possible for Windows 10 Mobile. This has been done by an XDA member, djamol who is also responsible for hacking windows phone store by exploiting a security bug in Windows Phone 8.1 devices. Interop unlock on windows 10 mobile is obtained by sideloading the root tool XAP file (download link given below).
Update 08/19/2015: See the instructions on how to interop unlock Windows 10 Mobile below.
He has not yet released the app to perform the interop unlock on windows 10 mobile device as he is asking the XDA community if he should release it now or after the official release of the OS. Check out Windows 10 Mobile updates and rumors. Interop unlock gives you full registry and file system access which means access to protected system files including the place where apps are installed. This is similar to iPhone jailbreaking or rooting of a phone where you get super user capabilities. Interop unlock for Windows phone 8.1 can be found here.
The developer claims that his hack requires only one button press and whole process can be done without need of soft or even hard reset. Find the progress on link given at the source given below.
Update: We finally have instructions for Windows 10 Mobile Interop Unlock
1. Turn “ON” Developer Mode by going in to Settings > Update & Security > For Developers.
2. Download Root Tool xap from here and deploy it using Application deployment tool that comes with Windows 10 SDK. This is the main file it has everything you need to hack your windows phone.
Open “vcReg” Tool and hit the Application Bar and select “Templates”. Here will see two options: Interop / Capability Unlock and “Full File System” Access through the MTP Protocol. Check both and click “Apply”. You are Done. Alternatively, you can use the built in registry feature inside root tool to edit the registry.
1. Go to Device Specific Registry Editor Tool and select “HKEY_LOCAL_MACHINE” Write these default values:
And this one that prevent interop unlock in Windows 10 Mobile:
Now let us unlock the new capability engine:
Write these values:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SecurityMana ger\AuthorizationRules\Capability\capabilityRule_D evUnlock]