Windows Phone-7 Update - Microsoft Recommends That You Remove All Data Devices

Microsoft has provided some advice for anyone with a Windows phone-7 Smartphone from Samsung: If they do not start to install the update, all data is erased from the phone. 
Update beginning to Windows Mobile 7 also cause problems on the second attempt. Now Microsoft has released a guide on how to update to be installed. The catch is great is that this probably means that all data must be deleted