Dear all Sifu & Guru,just brought a recond Japan spec e60 525 , an upgrade from my e46. My humble request for help/info is:1. My dealer brought me to an audiworkshop ( CV Car auto off jln Kuuchai Maju, same company who advertise in mototrader for iphone integration to bmw ). I ask for an dension 500GW installation for my Iphone/ipod, and was quoted RM 2300 with free FM booster.2. was reading intensively the forum found that i may need to do a CCC software upgrade or it will use FM transmiter ? unless aux-in is enabled.3. if i want to do a CCC upgrade , how much and where the best place , was reading that too many forum member was saying CCC upgrade by non expert will fry the CCC 4. CV auto also quote me a CCC upgrade will cost RM 1.2k !, but i was reading some other thread it can be done below RM 400 ?5.i am looking to install Garmin gps next year due to budget constrain and economy outlook. so where should i do it and what to lookout for .6.also i am looking for cheap and good 17" rim for my e60 any recommendation, replica is ok also , since i tend to break my rim every 1 - 2 year ( i am bad at parking and luck on road ) thanks for your reply and help.i be getting the car in few day time.