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      12-01-2012, 01:06 PM   #3
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

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Quote:
Originally Posted by idrift4wd View Post
I emailed terry this

Hey terry i recently acquired a jb4, but the previous owner has used it on his N54 335i, but he informed me that when he went to update the jb4 (G4) the window screen said it was n55. a warning message came up saying are you sure you want to update with n54 update on a n55 engine? Is there anyway i can tell if this control box is for n54 or n55?

as always he one word answered me back with N54.

Im not 100% sure if its for n54 or n55. anyway i can tell?
They are different boards, so if it was used on an N54 before it's an N54 board. Per the interface notes it will give a false warning if the N54 board has really old firmware. So update the firmware and the false warning will go away.

Mike
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