I am sensing a sentiment that we have walked too far out on the branch of our Apple tree and it has snapped. That we "got what we deserved" wit our card flashing since MANY 4870/90 folks have had to ditch their cards and put back in their 7300GT/X1900XT/2600XT and patiently wait for Netkas to "deliver us from darkness". (literally, huh?) I would like to create this thread to showcase the flashed GPUs which have been updated to 10.6.3 and 10.6.4 with NO ADDITIONAL HACKING OR PATCHING needed. I am starting with the card I have long advocated, the XFX 4870 1 Gig cards that came BEFORE the ZWxx series. There were at least 4 different cards, but all either used the EXACT reference fan of 4870, or a slightly slimmed down version. I just tested it in 10.6.3 and both single and Dual Display DVI work without a hitch. I am downloading the 10.6.4 Combo update and will edit this post to report results but I expect it to still be A-OK. Who has a flashed 4870 512 Meg using reference fan? I am willing to wager $10 that those are all A-OK as well. To be clear, I am hopeful that people running flashed GPUs of any sort that have updated to 10.6.3/4 WITHOUT any scripts or patches that still work exactly as before will report here. Please include pix of card and System Profiler. Please report whether you tested with Dual DVI or if you have just 1 display. I have included pix of both styles of XFX 4870 1 Gig cards that have been A-OK since 10.5.7. These were only 1 Gig cards that had Dual DVI pre-SL and have remained hassle free since. UPDATE : I have tried with 10.6.4, the XFX is still a champ. Single or Dual DVI, no issues at all.