Flashing N810 with OSX
The new N810 which I got last week, could not install Skype application because of some old Hildon libraries. So re-installing the operating system on N810 was needed.
To flash the OS on Intel based MacBook, you can still use the old flasher application available here. Then you should follow the N810 instructions form here. With one exception, there is a trick on the order of doing the stuff. First, connect the USB. At this point, change execution rights for the flasher, enter the command to start the flasher as sudo (either sudo su, or do something as sudo, so that you won’t need to stop to type the password later when there is only seconds of time to act). Now, enter the command and be ready to hit the “Enter” (but do not hit it yet). Now plug the power cable to start the N810, and when you will see the USB logo in the N810 hit the enter. You see the flasher to complete and you are done - have fun!