Guys if you must play you have to change byte9 to 17 in the SPD, and remember to correct the checksum.

others are doing 1066 as they have true 1066 rated dimms, we have been shipping 1066 since december also so if you have earlier ram you are going to need to set the voltage first before you apply the speed.

Also you really do need to look at 6-6-6-18 timings to start, I had a ton of issues getting 1066 with only the GBT board doing it really easy thru EPP.

so byte 9 to 17, correct checksum and flash, this sets default speed to 1066 on the ram