Formatting silicon power usb drive (toshiba)

now there is some puzzle on how to format a protected usb drive, this is without any hardware switch for write protected and write able status of flash drive.
my first experience is with this toshiba 8gb flash drive. it was write protected, I could not write it, so I tried to just format it, but windows cannot format it, it said write protected.
I tried to find the switch but found none. so I search google and found a guide here:

http://www.saveblogger.com/2011/12/cara-format-flashdisk-write-protected.html

so I follow it’s guide: