There is a little switch next to the connector on top of the card.
Where can I find a bios to flash which is unlocked?
Can I flash a MSI bios to my Club 3D card?
1. Take a backup of your bios by using ATIFlash
2. Modify the bios with VBE7
3. Flip the bios switch, if you mess up then can you always come back to the default bios by flipping the switch back.
4. Flash the modified bios.
Here is a good guide (I have used it my self):
http://rumorscity.com/2013/12/09/how-to-modify-video-bios-to-undervolt-gpu-in-linux/#comment-1187826533I don't know enough about the topic to say if you can use MSI bios on other cards, but change the original bios with VBE7 and using the bios switch seams relative safe.