BellaMichelle
A few more thoughts which overlap a little:
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(a) To learn when your iMac was built follow the link on
this ars technical webpage
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(b) About the IOBluetoothFamily.kext and IOBluetoothHIDDriver.kext versions my eMac's are version 1.6.6 and 1.1.4, respectively. These are Bluetooth
software not Firmware. (Duh?) Have you downloaded and installed
Bluetooth Software 1.5 for Mac OS X: Information and Download?
]Note that the reported versions of Firmware/software on different Macs may differ even though using the same installer packages... But I'd expect an iMac G5's software to have a higher number than mine provided they've both been updated from the same Installer. So I suggest you try this download/installation.
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(c) One way to ~indirectly determine your Firmware version would be to download and run the
Bluetooth Firmware Updater 1.2. A few comments on this may help & explain why: The download/install process is a bit "odd" compared to what we're used to. Download, then double-click to open, and follow the Installer's instructions. At this point, you may think you're done but No. Go to
/Applications/Utilities/ and open the newly filed
Bluetooth Firmware Updater.
This is when the actual installation ("flashing") of yur Firmware is done. Somewhere during this process, the Installer will do two things that may be helpful: ℹ (Try to) "connect" to the Bluetooth module so it can "flash;" (ii) search your system to confirm that the update is actually needed. These may help to answer your question(s), by inference. The Installer won't go forward if your Firmware is already current. (Folks with
newer "built-in" Bluetooth have a different chip with Bluetooth 2.0 + EDR, and shouldn't/couldn't be flashed, anyway).
Meanwhile, back at the ranch if the "fixes" you worked out with AppleCare
have continued to work, then this issue may be unimportant, if perplexing. Perhaps it'd be a good idea to call AppleCare again about this System Profiler thing, when you get a chance.
I'd be interested to hear back about how you're able to work it out.
"Thanks anyway?" Is that like "I'm getting sick of your crazy ideas!" or "Thanks, but no thanks"? Just kidding.
Best wishes!
Dean