Problem with RX470

[RXCoins]

Sorry for the english.

I bought a RX470 used, which had modified the bios according to the seller (gamer), so I spent a few days setting up my first rig, when I install the Gigabyte RX470 4GB G1 Gaming (memory Hynix) and then mining in ethminer, show me 22mh / s, when I wanted to modify the bios that according to tutorials, copy the 1500 (777000000000000022339D00CE516A3D9055111230CB4409004AE600740114206A8900A00200312 0150F292F94273116) to 2000, I was surprised that it was already copied in the 4 boxes, but when I enter GPU-Z only shows me: GPU Memory Clock 1650 MHz.

Help 

[xxcsu]

the memory clock not going to change just because you changing the mem straps
you still need to overclocking / undervolting  your cards

[RXCoins]

the memory clock not going to change just because you changing the mem straps
you still need to overclocking / undervolting  your cards

Sorry, this is a newbie question, there will be a problem if I modify the BIOS with a file that I got, the one that shared this, has the same card as I do, only changes version in F7, mine says F5. 


https://imgur.com/a/2IdlT

[Ultegra134]

Why don't you simply alter the GPU's settings with MSI Afterburner, AMD's Crimson or similar software? You can overclock both GPU and Memory clock, under or over volt your GPU, increase the power limit and so on. It's just an easier alternative.

[xxcsu]

the memory clock not going to change just because you changing the mem straps
you still need to overclocking / undervolting  your cards

Sorry, this is a newbie question, there will be a problem if I modify the BIOS with a file that I got, the one that shared this, has the same card as I do, only changes version in F7, mine says F5.  

Rom files are not interchangeable . You can flash them to another crads , but then your hashrate will drop to lower number's or just going up and down , you might can brick your cards. The cards under full load might going to crash the system , Miners genoil , claymore can crash the video driver ...

That modded bios its not the same what you have on your card ! Dont use it ! It might going to work , might going to give you trouble . Mod your own bios , there is a lot of tutorial for that

[leowonderful]

It's actually pretty difficult to truly brick a GPU and under many circumstances if you didn't run your hand over the keyboard and enter in random values, simply adding in another display card and reflashing it with a previous ROM can work. No custom ROM guarantees anything but you don't have much to lose in most cases anyways.

[xxcsu]

you can brick your gpu with a wrong bios flash !!!
Dont tell for a newbie he can not !!!