Quote:
Originally Posted by zachary1
Just completed a map upgrade on a 2009 335xi to "Eastern Region 2013" in about 4 hours (Start to Finish) I just wanted to thank everyone who commented on this thread as all the comments helped with either learning how to, or troubleshooting an issue - which I had none.
*To anyone looking to upgrade the Navigation to a new map just read this thread a few times and your golden*. After the first 10 to 15 pages I was comfortable enough to do this myself.
Zach
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So it took 4 hours, did you have to leave the ignition on? If not would that drain the battery a lot?