Hello dear,

This is a little tricky usb to read only mode.. but it works..


go run, type regedit ,then go to hkey_local_machine/ system /current control set/control

right click on that and new key... StorageDevicePolicies


in the right pane,
new DWORD Value, name it WriteProtect,double click on that and give its value to 1,and ok.. logout and login again..