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IMPORTANT: I, take no responsibility of ruining your card while flashing, which is very unlikely in DOS but is possible. I only wrote this tutorial for learning purposes and you're taking your own chance with your card(s). The following worked for me and my setup! The flashing and config was done medio april 2010.

My setup:

Mac Pro 2.66 Quad Core (Early 2009), 20” Apple Cinema Display, 24" Apple Cinema Display, OS X 10.6.3
Sapphire ATI Radeon 4890 HD 1GB Vapor X display port/dvi/hdmi/vga
Mini Displayport (24" Apple Cinema Display) to Displayport (Sapphire 4890) Adapter Cable from Circuit Assembly
2 x powercables for the 4890 "G5 Graphic Power Cable" and can be found on Ebay or ATI.COM store.
I got mine here: 4890 Mac power cables

(PLEASE NOTE: Mac Pro motherboard has two connectors for powering graphic cards. These connectors are special and you will not find the right cable in a PC store. You cannot use the ones supplied with the ATI card, they only work for in a PC)

Here is what I did (all the files I used are in this zip file - approx. 3.5 mb):

0. Flashed my card in a PC with the help of this guide (you need a real PC and a USB key): unofficial-how-flash-ati-cards (all the files needed for this are In this zip file - approx. 3.5 mb) You can also read everything in this pdf file.

1. Ran Apple OS X 10.6.3 combo update again
2. Left combo update open, did not immediately restart.
3. Ran Zeus Flashing Tool (get it here)10.6.3 qu_ci patcher ( > Select card... ATI 4000 series > Select OS... 10.6.3 > Downloads driver > Installed it
4. Restarted mac pro.

5. Downloaded http://groths.org/dualdvi.zip
6. Installed the included 3 kext; ATI4800Controller.kext, ATIFramebuffer.kext and ATISupport.kext like this:
7. Open "Kext Helper b7" and drop the 3 kext files into the window, enter your admin password and click EASY INSTALL
8. Restarted mac pro.

And BADABIIIING, my 24" ACD gave me something to look at as well

The only thing which is presently NOT working is sleep. My screen goes bananas after sleep, but I’m working on that.
The error message after boot regarding power to your videocard is “normal” and you should’nt worry. Just click it away.

Thanks to Cindori (http://groths.org/), Netkas (http://netkas.org/) and all the other people who has written some of the "millions" of posts I have read about this.

Files for flashing a ATI 4890 graphics card I did it in a Dell Precission T5400.

Tags: How to, Mac Pro, Sapphire 4890 Vapor X

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After joining the iPhone Developer program connect the iPhone to iTunes and do the following:

• MAC: Hold Option Key and hit Upgrade button with mouse click
• Windows:Hold Shift or Ctrl Key and hit Upgrade button with mouse click
• Should open browse window on mac or windows, navigate to the file you downloaded and double click it.
• After that just let it run and home everything works fine.

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Tags: How to, Cell phone, iPhone, iPhone OS 3.0 Software