Okay, older E53 X5 which only has Visteon ULF without BMW Assist modules. The 2004 X5 came with BMW's attempt to combine BT and BMW Assist only for that module to have the BMW Assist portion function.

2005-2006 E53 X5 has the combo Motorola-based ULF/BMW Assist module working and apparently work with the Treo 700p.

So, BMW owners that only have the BT function on the Visteon ULF who retrofit it on their "older" 2000-2003 BMWs are SOL when it comes to the Treo 700p.

I believe the 2004 BMW X5 can be retrofitted to use the 2005+ BMW Assist/ULF combo module!

So Treo 700p with Visteon ULF no go, unless you have the 1st generation Visteon ULF ending in -552 from reports I have heard on other Bluetooth forums.

If you have a Motorola BT/BMW Assist combo ULF made for the 2005+ BMWs, you are pretty much good to go just as long you have the latest firmware on your Treo 700p.

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