Remove Write Protection

Step 1

Click the “Start” button, type “regedit” (without the quotation marks) in the Search Programs and Files box and press "Enter" to open the Registry Editor.

Step 2

Navigate to “HKEY_LOCAL_MACHINESYSTEMCurrrentControlSetControlStorageDevicePolicies.” Right-click "WriteProtect" and select "Modify." Change the Value Data to “0” and click "OK."

Step 3

Add “StorageDevicePolicies” if it does not exist.
Select the "Control" folder in the left navigation pane.
On the “Edit” menu, point to “New” and click “Key.” Type “StorageDevicePolicies” (without quotation marks) and press "Enter."
Right-click in the right pane, point to "New" and select "DWORD (32-Bit) Value." Type “WriteProtect” (without quotation marks) and press "Enter."
After that change the Value Data to “1” from "0" and click "OK."
After that change again  the Value Data to “0” from "1" and click "OK."
Then eject your USB and re connect and FORMAT it successfully.