With older iDriver versions it was more common than now. What year is your 4.8i? It might be on the original SW level. Lots of upgrades have occured for bug fixes and some new features. Worth getting it done.

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Richard
Sir Snaps-a-lot, 9 Time Dragon Slayer (54 runs!)
2011 X5 50i Alpine White, Biege Nappa /Lt Poplar M Sport
2009 Z4 35i, Black Sapphire/Ivory-Black/Anthracite

Gone but not forgotten: '08 550i, '06 X3, '06 650i, '02 M5, '99 540i