Read some russian tutorial and i feel like im close to succes, but i just cant figure out how to copy paste the desired numbers into the hex editor.
You'd need to use a hex editor for something like unlocking the 2 extra CU in the 14 CU version of RX 460/560, but for most other things (including voltages and timings editing) there are simple GUI programs that are very easy to use. At least that's the case for Polaris-based cards.