Mango unlock - Please check that the Zune software is running and that Zune's sync partnership with your phone has been established - Resolved

Hi all windows phone users :

Today, I have to re-unlock my windows phone 7 with the new firmware Mango 7.5. I've noticed that the phone became locked after the Mango update.

During the unlocking process, I've this error message : 

Please check that the Zune software is running and that Zune's sync partnership with your phone has been established 

The guys from yallapps told me that I must uninstall and reinstall the Zune software. Once done, the same issue occurs and finally I decide to handle the problem myself.

First of all, it's impossible that this is due to Zune because i've the last version.

After seeing the behavior of message display in the unlock popup, the error fires after the message " connect to the phone ..." is displayed.

But Zune can connect to my phone, as proof, a sync was successfully done just after connecting the phone to my pc.

So, it seems that there's something blocking at the connection when the phone is sending data to outside.

At this time, I verify that any internet connection cant be made from the phone by using the usb .

Solution

I  switched the connection provider to use the mobile network 3G+ instead of using the usb connection and after redoing the registration process, the problem was solved.  My phone is now dev unlocked