I have a MBP and I dont use ActiveSync, I use MyPhone to backup all my contacts, calendar, task, text messaging... its convenient because its a cloud base service and I can backup anytime I have a internet connection (WAN or LAN).
When I want to flash my phone to a custom rom I use bootcamp with Windows 7. I also use Fusion 3 when I use windows on MAC OS X but could never get the flashing to work because if some usb issue blocking the transfer.
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