Hello, When i try copy/delete the files on my SD a pop up says "the media is not writable", I googled A LOT. Formatting is not possible, I tried the panasonic formatter, that doesn't work. I changed my writing-protection windows environment. I checked if there was a switch on the USB Reader. That didn't help, then i put back my SD in my DS and tried to copy a file with the DS from a folder to another one. It did work so i think that my SD Reader has all the chances to b the source of my problems. Here is the beast : Everything seems to be correctly soldered out. I was looking maybe for a way to find the write-protection connectors and try maybe to make something with it ? Note : The reader worked well until today for no particular reason.