uh.. does itx mean its not the OC version? here's mine https://ibb.co/bYwPtQ i think we're the same because i did not see him mention that he has a 6 pin
it think it's alright. because accdng to buriedone (https://www.youtube.com/watch?v=JKM60VVIfRg&t=542s)
 it doesnt matter if its 400 or 500 series. what matters for bios modding is you have the same memory type and memory size as stated in 2:06 to 2:10
so yeah, i think you'll be fine. just have a backup file of your original bios.

drivers past 16.X.X now checks  for modded bios and disables them. you need pixel clock patcher https://www.monitortests.com/atikmdag-patcher-1.4.5.zip
what it does is patch your driver and makes the modded bios work. my 560 is now working getting 14mh/s thanks to priviet's mod

could you check in gpu z if you also have micron memory?

i also flashed my 560 micron memory using priviets bios mod. im using an rx560 4gb non OC. meaning it has no 6pin pcie external power. only the mobo pcie. aftter the mod, im getting a stable 13.9-14mh/s. thank you priviet. oh and there is a warming up phase. my card starts at 11mh/s then jumps to 14 after a while and stays there. im at 63 degrees at 55% fan. ambient is around.. i dunno not cold, almost warm. im in southeast asia. im actually happy. i got this for $120. all 470/570 and up are sold out in my area, second hand cards are running for $280-300+ and i cant pay for that much. i'd rather buy 2 of these and call it rx570 2 card version. oh i do have a 470 4gb g1 gaming and its doing 28mh/s so yeah, it is half the hashrate for half the price. but i got my 470 for $135 though after MIR around feb. lol.