pnanda

I haven't seen the MBA board, so my answer will be more generic. If the memory is soldered onto the board (and we build h/w where we solder flash chips on mother boards for differnet deployments - expensive routers!), to replace/upgrade/or modify those chips, we send them to factory. Precision soldering is required, it is not to be done at home (too fine a work for home, unless you have done this same exact work before and done it well everytime). Even after factory re-work, some boards/assembly simply fail (shorted etc). Definitely not worth the risk unless you have direct access to a mother board assembly factory and someone does it for you over there. cheers

what is the digitizer pixel density? If I want to use a "notepad" type application, what clarity am I going to get on a line I draw with a touch-panel pen? drawing, network diagrams etc would be great on this iPad if its digitizer density matches its display pixel density.

What is the "pixel density" of the "Digitizer"? By that I mean, if I am creating a "notepad" type application using a fine-tip touch-panel pen, what kind of granurality (or clarify) am I going to draw on the LCD panel? Is the digitizer the same density as the display pixel density? I hope so!!