No you can and should download the AMD drivers. They are the up to date drives.
As to the BIOS you wish to download and install. The BIOS will change the upper limits of your graphic cards settable frequency. Are you planning on going cold with Liquid Nitrogen? If not then I seriously doubt you will come close to maxing out your current clock settings
😉But if you do want to flash your BIOS that is of course your right and your decision to make. I take it you are selecting the correct BIOS for your graphic card as there are two BIOS in that folder. And have you updated your iTracker before you tried to flash to the new BIOS?
If you have done both then I am at a loss why your BIOS is not updating.
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