Keyring Digital Photo Frame

Key ring digital Photo Frame problems?
I have a keyring digital Photo Frame and have not tried to use it until now but it says i need to format it first ok i thought no problem but i just keep getting the message could not complete format ,it’s not a read only device and it is connected correctly. Has anyone any ideas how to overcome this problem.
Is there a switch (like some USB memory sticks) that ‘locks’ the device so you cannot overwrite it?
Are the batteries fresh? Have you removed the little tab?
You could try using Photorescue to check it and reformat it.
Are you using the correct type of formatting. I guess it’s FAT rather than anything else.
Digital Photo Frame Key Ring