It will be needed if your GPU BIOS is not recognized after a custom flash. Just run it and the cards are recognized.
1. Run atikmdag-patcher.exe. (If you only need the BIOS signature patch, rename it to atikmdag-patcher-bios.exe first.)
1. Run atikmdag-patcher.exe. (If you only need the BIOS signature patch, rename it to atikmdag-patcher-bios.exe first.)
2. If all limits are found, click "Yes" to patch and sign. If a limit is not found or if multiple matches are found, the patcher needs to be updated.
3. Reboot.
Direct download:
https://www.monitortests.com/download/atikmdag-patcher/atikmdag-patcher-1.4.7.zip
Direct download:
https://www.monitortests.com/download/atikmdag-patcher/atikmdag-patcher-1.4.7.zip