Here's one more shot: turn the phone off and remove the battery, then let it sit on your desk for 15 minutes (preferably with the case covering the space where the battery should go, but still without the battery). This should clear up any residual electrical charges that may be causing the "write-protected" effect. After 15 minutes, put the battery back inside and power up your phone. Then let us know what you find. Will go back to you after approximately 15 minutes.