Hello fellows! In case someone may find it interesting here is a small guide
1.8500LE may not be flashable in a "blind mode" like an adult 8500
2. You need a an AGP PC or you can try with "graphicaccelerator" in VNC
3. I did it with freeDOS and it gives you weird messages just keep trying
4. -f command is mandatory in ATIFLASH.EXE
5. I attached a ROM with reduced memory clock (250/250)or you can make your own
6. I got a full HD resolution on 32" TV what i use as a primary monitor. (huge improvement over stock apple's 9000) In this case second head won't display any image
7. On smaller monitor all works properly,
8, My card is Hercules 3D PRO In case you wonder