Flashing your 280x  Core edition for 2d Screen flickering issues.

1.  Unzip the folder to your desktop.

2.  Right click on the ATIWINFLASH (not Atiflash) application in the folder, run as ADMINISTRATOR.

3.  load image of the bios file in the folder, 280xtdf16.w8.

4.  Run.

Thank you

WARNING- DO NOT FLASH YOUR CORE EDITION UP TO BLACK EDITION, we're technicians, we know what will work and what will not.
If you are aware that some cards can be flashed up, you will know that we support users doing it and will help you. this is not the case here.
If we could just flash your core edition to a black edition, we would have and sold it as a black edition.  
Flashing the wrong bios voids your warranty.  Trust us, please.  

Even though we beg our users NOT to flash the wrong bios, some brave fools will attempt it and ruin their card.  Please don't be one of them.