[Help] What is demo content \ Microsoft retail mode?

[WPCentral Question]

My phone got updated to demo content and not even was reset.
My phone displays someone's pics who lives in Delhi and gives me his information.

My phone has deleted everything thing including my pics and songs automatically.
Even if I try to copy my pics from my PC to phone it gets deleted again.

What should I do?
Something known as Microsoft retail mode had been added to it.
Please help!

 

[Pacus1x]

That's weird... demo mode just like that?

In your case, you may need to flash your phone to another ROM, if you could tell the model of your phone that would be helpful... about the flashing you can try this.

If that doesnt work, you can try the ROM flashing but it's more difficult.