I'm not going to argue with you. I'm a Mac user and all my rigs and GPUs are running on Linux (Ubuntu in my case). So, this tool is setting the correct memory strap (1500 in my case), memory and core clocks,  which suits my needs. I'm having sapphire nitro+ rx 570 and rx 470 cards, flashed with BIOS images produced by this tool.

However, if anyone wants to use it, they can do it. Otherwise Polaris BIOS editor or SRBPolaris are still the best option to mod your BIOS.

Hm, the tool is doing everything described in your guide, but in automated way. The only thing that you will need is the original GPU bios. More over you don't need a Windows machine to patch your bios, so it is perfect for Linux or Mac OS users.

Save your original bios with atiflash and upload it into bios.rigswitch.com to get a modified bios. Just play a bit with memory and core clock settings

For start you can use these settings:
Strap timings: 1500
Core clock: 1150 MHz
Mem clock: 2050 MHz

Note: you don’t have to set voltage, it will use the default values

Has anyone tried http://bios.rigswitch.com