I have a number of 1GB SD cards I use in a Phillips Photoframe. When they are new, I can load them up with jpeg images OK from my PC (using a card reader attached to my PC) and they play OK when put in the Photoframe.
Now I am trying to either add more photos to them or re-format them and adding a host of new photos. Whichever position the 'lock' tab is in, when inserted in the card reader attached to my PC, I get a PC screen message telling me the card is locked.
I have managed to reformat one of them by putting it in my Canon camera, but it still shows up as 'locked' when I put it in the PC card reader - hence I cannot load it up with new pictures.
How can I make ithem unlocked so that they will accept formatting from my PC and a new set of pictures?