OTC Updater

You first download the operating system of the phone by "Microsoft Device Recovery Tool" to version 8.1 Update 2

Then you offline upgrade it to version 10.0.10586.107 with the program "OTC Updater"

Do the following to use the "OTC Updater" program:

Mobile:

1- The phone is in flight mode

2- Full battery charge

3- Data connection between phone and PC with USB cable

Computer:

1. Microsoft Framework v. 4 software is installed

2- If you still encounter an error while running the "OTC Updater" program

Make these changes to the Windows PC registry:

Before making changes to the Windows PC registry

First get a "system rertore point"

This will help you in restoring the registry

You can simply copy the link to reach the desire place in the regedit and then modify the required value.

............

Step 1 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v2.0.50727

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

.............................................................................................

Step 2 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v4.0.30319

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

..............................................................................................

Step 3 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v2.0.50727

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

..............................................................................................

Step 4 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v4.0.30319

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

By doing these 4 steps, your problem should be solved

Reset the system and check with "OTC Updater" program

After these changes restart the pc and then check if anything happen. If not then follow further step.

If the error is not fixed

Do these 2 steps

Step 5 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp

Set the DefaultSecureProtocols REG_DWORD value to 800

Step 6 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp

Set the DefaultSecureProtocols REG_DWORD value to 800

After these changes restart the pc.

You will receive the next updates of Windows Mobile 10 online

By checking the update in the menu "phone update" 

Online update OS build:

10.014393.1066

10.0.143932551

10.0.15063.297

10.0.15063.1868

Dear,

Still I had problem over OTC. My device is LUMIA 640XP Dual Sim ( RM - 1067 _ 1005 ) 8.10.1514.

I tried all the things, but not succeed.

Earlier I reset using" Microsoft Device Recovery Tool" for factory reset and original OS and then try your solution.

I had WIN 7 SP1 32 bit with 4 GB RAM.

Still, will you please help me!

Hi,

You can simply copy the link to reach the desire place in the regedit and then modify the required value.

Step 1 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v2.0.50727

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

Step 2 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v4.0.30319

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

Step 3 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v2.0.50727

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

Step 4 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v4.0.30319

Create a new entry SystemDefaultTlsVersions with a REG_DWORD value set to 1.

Create a new entry SchUseStrongCrypto with a REG_DWORD value set to 1.

After these changes restart the pc and then check if anything happen. If not then follow further step.

Step 5 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp

Set the DefaultSecureProtocols REG_DWORD value to 800

Step 6 - Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp

Set the DefaultSecureProtocols REG_DWORD value to 800

After these changes restart the pc.

Hi.

You helped me.

A good, effective and helpful help.

With your good guidance, my problem was solved.

I will not forget your help.

I succeeded.

And I got the offline update of Windows Mobile 10.

Thanks, it worked for my lumia 640XL 3G.

it was really a pain ..... being on 8.1 without apps store or Microsoft account and mail signing in option.

thanks a million for the tips 

You're most welcome buddy

Thanks, it worked for my lumia 640XL 3G.

it was really a pain ..... being on 8.1 without apps store or Microsoft account and mail signing in option.

thanks a million for the tips