i cant download the Heliox's rom file.
it says server not found.
thanks for the pointers Eliovp and jmumich -- will put this in the checklist.
Btw, Eliovp, your rom zip links seems bad, is there a folder in yoru website to download ROM files?
These are my notes on flashing 6 x RX480 Sapphires.
It was a success!
Many thanks to Heliox, jmumich and others for your pointers.
No guarantee it will work for you but the checklist below will be useful to find all the files needed to get started.
OBJECTIVES
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My rig is 6 x Sapphire 480 8Gb Reference cards. Win 10, ASrock H81 mobo, Celeron 1840, 8GB RAM, 120GB SSD and powered USB3 risers x 6. EVGA-G2-Gold-1300w.
My goal is to flash the cards with Heliox “low power” RX480 rom mod and save power consumption and bring the hash rate to as close to 30MHs per GPU. Previously its running at stock 22-23Mhs per card. Power draw just under 1100watts. I will do some power comparisons and fine tuning tomorrow when I get my hands on a kill-o-watt adapter.
DOWNLOADS
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Before you
r begin, download some of the necessary files you need to do the flash.
Download the special “atikmdag.sys” from "
http://www.win-raid.com/t892f16-AMD-and-Nvidia-GOP-update-No-requests-DIY-19.html#msg30028”. You need to register yourself on this site so that you can download the file.
Download the Low Power 480 ROM Mod from Heliox’s website. Download link here -
http://www.mininghwcomparison.com480lowenergyok.zip/Download the latest atiflash utility at
https://www.techpowerup.com/downloads/2728/atiflash-2-74FLASHING
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Open cmd.exe with Admin rights and find the atiflash command line file. There is a windows version but I didn’t use this.
Type "atiflash -i” to list all the GPUs in your system
I will do the flashing for every card one card at a time, all in one go. So let’s flash the 1st card by using the commands below:
To flash first card, type "atiflash -p -f 0 480lowenergyOK.rom”
To flash the 2nd card, type "atiflash -p -f 1 480lowenergyOK.rom”
Modify the "- f" switch accordingly depending how many cards you have
After you done flashing. Reboot PC.
SIGNING THE DEVICE THING & MINING
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After booting into windows… install the latest Crimson drivers. You can find the latest 16.7.3 driver package for 480 series in AMD website.
Next, goto Device Manager and find Display…. you GPUs should be listed there - for my case I can see all 6 cards but it has an error mark on it.
Right button click each of them and disable all GPUs.
Next reboot to safe mode by pressing Shift key and reboot.
Ensure that you select Safe Mode with Networking so that you can download 1 more utility to solve this device signing issue.
Before you download that file, you need to replace the atikmdag.sys file in c:\windows\system32\drivers folder with the special atikmdag.sys file you download earlier.
Download the device signing utility from "
http://www.ngohq.com/?page=dseo”. After downloading dseo file, Open it and sign the atikmdag.sys file in the windows folder.
Next, open a cmd.exe window with Admin rights and type “bcdedit.exe -set loadoptions TESTSIGNING”
Reboot as per normal.
Goto Device manager and enable your GPUs again.
Reboot for good measure
You are ready to launch your miner - in my case is Claymore Dual Miner…. I am doing only ETH btw. You should see 29MHs per card.
