Will updating to GDR3 make me lose any of my data?

[WINDOW LOVIN]

Has anyone heard of anyone losing any apps, pics, or saved setting when updating and resetting? I have a 521 if it means anything.:smile:

 

[Arpit Mittal]

Nopes, no lose in apps, pics etc. When u will update.
Moreover still there is time for GDR3 + Nokia Black Update for your Lumia 521