I downloaded the HP Disk Format tool and tried to format the pen drive with the same message "Stop. The device media is write protected"
I had contact with people from EMTEC and said: "This problem is due to poor function of the pendrive. We have to change a new one in your store if it is within the warranty period"
Since the warranty has expired, afraid I have to shoot and buy a new one or you think of something new to try?
Thanks for your help, a greeting