Just got my update and installed it.
Holy crap...what a PITA.
Instructions say to open the door, put in the SD card, close the door...and unit will recognize the card and prompt you to install the update. Yeah, right.
Mine didn't. So I went into the menu and found the "Update" button and, when I pressed that, I got a message telling me that no update files were found on the SD card. Was only after I power-cycled the car (not just turning the Alpine unit off/on) did it prompt for the update.
It also would start to update, flicker black, then go to the audio screen, displaying a message that "Update Completed Successfully"...when it clearly wasn't.
Instructions say this should take about 2 minutes. Took me about a half hour.
But, it's done. And it looks like a completely new unit (not necessarily "better", just new/different). Menu is completely different, maps look completely different. I haven't had the chance to drive around and see if the roads are more accurate (they were wildly inaccurate in my area (in the old map/software revision)).