Hi,
Dear member of SanDisk Community, welcome.
_ Please friend, do not grieve more, return it, is dead, ist kaputt… _
Write protection errors occur when a UFD detects a potential fault within itself. The drive will go into write-protected mode to prevent data loss.
There is no method to fix this.
Being you, an experienced user, you’ll agree with me that this problem happens to all brands.
You might have a pleasant surprise, if can contact with SanDisk Technical Support who will replace the device if it’s authentic and is within warranty. Link: http://www.sandisk.com/about-sandisk/contact-us/
To find out more on this, see here: http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/HELP-how-do-i-reomove-write-protected-message-from-my-16gb-flash/m-p/323924#M8925
Luck.
Regards, Alfred. (Google translated)
