My understanding is that pin 21 on the connector, "Accessory Indicator/Serial enable" can have different resistance levels, and that certain resistance levels (500Kohm, 1Mohm) pop up this message.

I've seen hardware hacks to cut the resistance out from the connector.

Are there any software hacks that accomplish the same thing? I want my iphone to ignore this pin and just go on its merry way...

I'm sure there is a thread somewhere about this, but I couldn't find it!