refer to this thread fir the Windows 10 Mobile Offline Updater : http://www.antgsm.com/showthread.php?t=255824
1. Make backup for your phone, for example, copy data to your PC. And make sure the OS of your PC must be at least Windows 7 Service Pack 1. Windows 8/8.1/10 are also acceptable, but you must install every Visual C++ Redistributable Runtime and Windows Device Recovery Tool.
2. Check your OS version in about phone. The OS version must be at least 8.10.14219.341 or newer. If the version is lower than required, please update it. You may want to use Windows Insider app from Windows Store. REMOVE YOUR PIN LOCK to prevent from some unknown issues after an upgrade.
3. Download and open the package by 7-Zip. Choose your model and extract the exact folder from it. For example, Nokia Lumia 820 should extract 480×800 folder from 2nd Generation folder. DO NOT EXTRACT cabs in that folder.
4. Press Win(Command)+R, in run command dialog, type "control printers" and run. Unplug your phone and remove your phone in Device and Printers window.
5. Extract iutool package attached below, and open a command prompt window with Administrator privilege. Change working directory to iutool.exe's location.
6. Plug your phone to your PC, then type this command:
iutool -l
7. If your phone is shown in command prompt window, then type this command:
iutool -V -p D:\480×800
(For example I have extracted this folder in Drive D)
8. Wait for about 40 minutes, then your phone will be in Win10 Mobile 10586.107.
9. Open Developer mode in "For Developers" option, then deploy tools that could modify phone's model to your phone.
10. Use any method that you know to modify your model, for example, I modified model to Microsoft RM-1116 (Lumia 950 XL Dual SIM). If you are going to use VCreg or Interop Tools, you needn't to Restore NDTKSvc.
…………………………………………………………………………………………………………………………………
Here's the demostration of upgrade Nokia Lumia 1020 (Hong Kong Variant) to W10M 10586.107:
https://www.youtube.com/watch?.....v=Ozt4QuQJj5U
1. Make backup for your phone, for example, copy data to your PC. And make sure the OS of your PC must be at least Windows 7 Service Pack 1. Windows 8/8.1/10 are also acceptable, but you must install every Visual C++ Redistributable Runtime and Windows Device Recovery Tool.
2. Check your OS version in about phone. The OS version must be at least 8.10.14219.341 or newer. If the version is lower than required, please update it. You may want to use Windows Insider app from Windows Store. REMOVE YOUR PIN LOCK to prevent from some unknown issues after an upgrade.
3. Download and open the package by 7-Zip. Choose your model and extract the exact folder from it. For example, Nokia Lumia 820 should extract 480×800 folder from 2nd Generation folder. DO NOT EXTRACT cabs in that folder.
4. Press Win(Command)+R, in run command dialog, type "control printers" and run. Unplug your phone and remove your phone in Device and Printers window.
5. Extract iutool package attached below, and open a command prompt window with Administrator privilege. Change working directory to iutool.exe's location.
6. Plug your phone to your PC, then type this command:
iutool -l
7. If your phone is shown in command prompt window, then type this command:
iutool -V -p D:\480×800
(For example I have extracted this folder in Drive D)
8. Wait for about 40 minutes, then your phone will be in Win10 Mobile 10586.107.
9. Open Developer mode in "For Developers" option, then deploy tools that could modify phone's model to your phone.
10. Use any method that you know to modify your model, for example, I modified model to Microsoft RM-1116 (Lumia 950 XL Dual SIM). If you are going to use VCreg or Interop Tools, you needn't to Restore NDTKSvc.
…………………………………………………………………………………………………………………………………
Here's the demostration of upgrade Nokia Lumia 1020 (Hong Kong Variant) to W10M 10586.107:
https://www.youtube.com/watch?.....v=Ozt4QuQJj5U