How to remove write protection from usb flash-drive?

Step 1:

 

One more thing to check: 
> Click Start->Run, enter: regedit
> Navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control
> Does sub-key StorageDevicePolicies exist? If yes, right click to delete this sub-key

Step 2:

insert the USB device, then

control panel->Admin Tools->Disk Management

Your boot drive will show as C:\ and under 
Layout will be  Partition
File System will show  NTFS

How does your USB show up?

Step 3:

So if you go to  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
look for  StorageDevicePolicies  – if found, open it and look for  WriteProtect  - - delete the key

Step 4:

Try this …it definitely works…I found it after lot of research online…

http://www.pny.com.tw/index.php?cls=2&mode=download

download and use  Ufix-II

all the very best !! 

i have done these all but problem is same…

plzzzzzzzzzzzzzz tell me what should i do now…