Tested few times successful on my OMNIA 7 and HTC MOZART - not suitable for custom ROMs like DFT, maybe, because these have a speciall boot loader ....
100% device Backup Method (SMS/Email/WhatsAPP) also......... and I mean the games score also chevron unlock and interop-unlock also. Pictures + Media you can load over Zune back .......
Unzip WP7 Update Cab Sender.zip on your computer. Its a update/backuptool. it conclude a dummy cab- it will only backup your phone- not update. Run the WP7 Update Cab Sender.bat (no ZUNE run). If you get a error, please install the tool from folder "if needed install this tool".
After run the WP7 Update Cab Sender.bat type B for (fake) update and real backup. If you have allready a backup in C:\Users\UserName\AppData\Local\Microsoft\Windows Phone Update- please cut and paste it in a save place.
After all you will get a error message: IU (Image Update) installation failed on phone: None
of the packages in the update are applicable
Is o.k. ignore the error message. Your BACKUP are succesful done. the error causes from the "fake update", the update cab is only a dummy and is neeaded to activate the Backup process.
INFO: to see this path/files, you have to activate under windows explorer folder options "visible hidden files" The Backup files you will find in C:\Users\UserName\AppData\Local\Microsoft\Windows Phone Update such as this folder name d4e21648 - xxxxxx - xxxxxx - xxxxxxx.
When you then connect your phone and start ZUNE, and search to updates, ZUNE tell you "your phone software is actuall" and you get the RESTOREPOINT. Copy/Cut the Backup folder from ....\Windows Phone Update to a save place
INFO: If you RESTORE it over ZUNE plase be patient, the first 10 minutes you do not see an progress- but wait it will! f the screen go off, turn on and lock off the screen AND wait! Restorations duration is ca. 40 min. please do nothing with the phone in this time. be patient. After Restorations connect again with ZUNE, then you get your manufacturer App Store also back
I will not take any responsibility for any damages caused directly or indirectly from using the software-package or the instructions. Read the instructions thoroughly and proceed carefully!