My USB flash drive is currently unusable because it somehow (quite suddenly!) became write protected. I have googled around and tried many solutions to this problem, but none of them have worked so far. Here are some of the solutions I've tried:

• The drive has no tangible switch or button.
• Formatting the drive won't work, even in command line, even "low level formatting", because the drive is (after all) write protected.
• Changing certain registry keys to 0 doesn't seem to work.
• Repair_Neo2.9.exe says "USB Flash Disk not found!"

One factor that may make it more difficult to find a solution: I have no idea what the make or model is, because I received the USB flash drive from my university as a gift. So if anyone knows how to find the make and model, that alone might be helpful.

Any ideas? Thanks.