@BigBoss, :-)  a flash back from the past.....I'd suggest you to try what we used to do when dealing with semi-conductor/microchip problems You need to find a freezer spray to superchill to around -60F, this will change the semi-conductor state. This superchill spray was available from RS components in the UK. Alternatively, put the card into a small platic case and find a deep freezer to leave it overnight though your best bet would be the superchill spray. With the card super chilled, try to format it immediately. It just may work.. HTHs.

 

 

 

On 1/8/11, TheBigBoss <thebigboss at peperuka.com> wrote:
> It's a 2gb micro-SD loaded with games for my daughter's DS (using that R4
> cartridge)
>
> It was working fine until last week when I tried to delete some files - got
> a nasty write-protected prompt
>
> BTW, the microSD is plugged into a cheap card reader (Promate crPro.2) and
> connected with USB
>
> I tried everything I found on the net, that is reformating disk (it refuse),