How to Fix Lost Bluetooth on a 17-inch MacBook Pro 6,1
Bluetooth showing as THIRD_PARTY_DONGLE or rejecting connections often points to a controller, USB mapping, or OCLP patch issue.
Step-by-Step Fix:
- Power cycle the controller: Shut down, unplug power, wait 30 seconds, then start again.
- Reset NVRAM and SMC: Reset both before changing macOS patches, especially on pre-2012 MacBook Pro models.
- Forget devices: Remove old Bluetooth pairings, reboot, then pair one device at a time.
- Reapply OCLP patches: Open OCLP for Monterey, run Post-Install Root Patch, and reboot.
- Check hardware: If Bluetooth still fails but Wi-Fi works, inspect the Bluetooth board/cable or test a known compatible USB Bluetooth adapter.
Original Question: "17" MacBook Pro 6,1 Mid 2010: lost bluetooth"
OCLP 2.4.1 Monterey 12.7.6
A few months back I found out about all this and I loaded the OS on this computer. I've been using a Magic Trackpad since then and have not had any issues. All of a sudden the other day, it stopped connecting. None of my BT devices work now and it says "connection rejected". The trackpad still works on my 13" Mid 2012 9,2 with OCLP Ventura so I know it's the computer.
When I go to system report, it's State: on, Chipset: THIRD_PARTY_DONGLE, Discoverable: Off.
I originally had this same issue when I tried to load Sonoma on it from High Sierra and it completely stopped working so I tried loading Monterey OCLP from a blank slate from a HD made on another computer. The BT would not work at all and said the same things in the report.
I then got a copy of High Sierra and put that on a drive and loaded it on to this computer and from there, did the Monterey install. I had a feeling I didn't have drivers needed, so that made sense but I am confused of what it stopped working and I am having the same issue. Today, I redid the root patches and that didn't do anything.
Any thoughts or things to try?
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