1 - Go to Settings
2 - Update & Security >> For Developers
3 - Enable
Developer Mode
4 - Enable Device Discovery
5 - Install Visual Studio 2013 in the computer
6 - Connect the phone on the USB
7 - Open the XAPDeploy
"C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v8.0\Tools\XAP Deployment\XapDeploy.exe"
7.1 - Download Root_Tool.xap
http://forum.xda-developers.com/wind...ws-10-t3178140
8 - Deploy the APP
Root_Tool.xap using XAPDeploy
9 - Open the deployed
Root Tool
10 - Go to the
Lumia Registry Tool
11 - Check
HKEY_LOCAL_MACHINE and
DWORD
12 - Type this in the path
Software\Microsoft\Cellular\MVSettings\IMSISpecific\Default\CellUX
13 - Type this in the Key
HideMMSAPN
14 - Tap on Read
15 - Change the value to 00000000
16 - Tap on Write
17 - Now go to the Settings>>Network & Wireless>>Celular & SIM
18 - Select your SIM>>Properties
19 - Goto MMS APN>>Add an MMS APN
---- These settings are carrier specific ----
20 - Profile name = T Mobile
21 - APN = fast.t-mobile.com
22 - MMSC (URL) =
http://mms.msg.eng.t-mobile.com/mms/wapenc
23 - Save
24 - Apply the settings
---------------------------------------------------
25 - Disable
Developer Mode
Credits:
djamol for Root Tool
[JAILBREAK][GUIDE] Interop Unlock for Window… | Windows 10 Development and Hacking | XDA Forums
VCfan for the VCReg registry editor
http://forum.xda-developers.com/wind...terop-t3135326
Enjoy!!!!!!



