I inquired with my dealer about upgrading the software [Polestar] on my v90 and they quoted $1395. Since it's a $1295 option currently, I assume they're charging me $100 for the install. I had hoped they might actually come in below retail for a 3 time customer, but no. If you have purchased the Polestar software after your car purchase - where did you buy and how much did you pay? If it's a simple flash, I'd prefer to just do the install myself, if that's an option. Thanks!