My flash USB is write protected and I've tried every possible methods I've encountered over the internet, to get rid of this.
Accessing the usb is not working.
Format from my computer, is not working.
Clear attributes with DiskPart is not working (can't be cleaned, Current Read-only State is Yes but Readonly is set to false...
With Disk Management, I can't delete the partition...
Is there any other method... With a specific software or somehow?
Edit :
The USB came with no particular drivers, it's a generic one I believe, that installs and that's it. I tried this on Windows 8.1, but it doesn't work as well on Windows 7.
These are the details extracted with Flash Drive Information Extractor :

cleancommand indiskpartjust hangs for ages then show error). Until I got the software from manufacturers site to format the drive, the data is always protected. – PatricK Nov 05 '13 at 04:56