Bluetooth connectivity broken after MacOS 10.14.6 update (MacBook Pro 13" Early 2015)

Just to fill this in... I am having a similar problem but my MacBook Pro is the 2018 model with Touchbar.

Console Log did see the bluetooth device but RSSI is very low. But my microsoft mouse just couldn't pair.

Chat with support, and they suggested a firmware upgrade on the mouse. Geez.

I have the same problem with my mid-2015 MBP 15''. Took it to the Apple store, their diagnostic tool did not find any issues. They have booted their OS image and bluetooth still does not work. I think this update pushed some firmware changes. I hope Apple engineering looks into it.

Correct, this is not a hardware issue. I have been working with Support for the past 24 hours on the issue of Bluetooth "discovery" failing with the update to 10.14.6 from 10.14.5.

MacOS 10.14.6 introduced a new security fix for Bluetooth. It appears that the fix broke Bluetooth for MacBook Pro Mid-2015 hardware and older devices; perhaps other hardware as well. MacOS 10.14.6 may have introduced a firmware change or security fix that affects Bluetooth functionality, albeit the hardware will continue to work; i.e. MacBook Pro Mid-2015 15", 13"....

Attempting to perform a MacOS Recovery from a backup of 10.14.5 will not fix the issue. Using MacOS Recovery after the update to 10.14.6 (reverting back to 10.14.5) does not remove the Bluetooth issue, thus current analysis suggests a potential firmware change for the Bluetooth hardware or a security fix that limits the Bluetooth hardware from "discovery" of new or previously used Bluetooth devices.

Apple Engineering has received the formal case submission for the disabling of Bluetooth discovery functionality with 10.14.6. The case does contain specific information related to the Mid-2015 MacBook Pro, although the Bluetooth discovery issue may have impact on other hardware. Note: this is NOT a hardware issue. Apple Technical Support purportedly will hear back from Engineering within 48 hours with a solution, next steps or direction on next steps to resolve the 10.14.6 experience of disabling Bluetooth.

Apple Engineering has confirmed that 10.14.6 disables Bluetooth. The MacOS 10.14.6 security update disables the ability for the Bluetooth hardware from discovering Bluetooth devices. Apple admits the issue exists, albeit despite the number of reported incidents across the globe, Apple Engineering via Apple Support are focused on the delivery of Catalina (MacOS) for release in the September, October timeframe, hence will not likely address the Bluetooth issue with a 10.14.x supplemental release.

Whether or not the "Catalina" MacOS release will address the Bluetooth issue on Mid-2015 models for all of us who have updated our systems with the 10.14.6 security release, the current Apple Support remedy is to wait for the Catalina release.

This is unacceptable since many of us with Mid-2015 MacBook Pro hardware are being forced to update to the Catalina when released in order to "maybe" experience a fix for the Bluetooth discovery protocol to be enabled for Mid-2015 systems. This is unacceptable since many of us have Mid-2015 hardware remaining under warranty, extended warranty, and furthermore systems that remain supported by Apple for future MacOS system software.

The Bluetooth issue does appear to affect the last generation of MacBook Pro models known as "Mid-2015" where Macbook owners of these models who have updated their systems with MacOS 10.14.6 are affected by the Bluetooth defect.

Apple owes the Macbook community a software update to remedy this Bluetooth discovery issue in Mojave.

Apple Technical Engineering confirms Apple *must* receive the hardware to evaluate the specifics of the hardware and possible replace the Apple AirPort Card in the MacBook Pro (Mid-2015) as a result of the events of installing the MacOS 10.14.6 software update. Apple claims the first remedy may require the replacement of the hardware.

Apple Technical Engineering also recommends all users subject to the failure of Bluetooth as a result of the 10.14.6 installation report the issue to Apple Support. The more calls on the issue and the report of the failure is instrumental for Apple to address the broader audience of MacBook Pro users experiencing the Bluetooth failure with the introduction of 10.14.6 software update.

Apple is receiving my hardware for repair. :(

I agree ian_sw_london. I"m extremely disappointed that a software update can disable the hardware. The interpretation of the engineers response is; "Not knowing what revision of hardware may be affected, it is necessary for Engineering to get they hands on the equipment." "The AirPort Card/Bluetooth may require replacement due to the software download." If this is true, this is bound to be a recall for all equipment affected by the 10.14.6 software update.

I also cannot justify the loss of my equipment for an extended period of time. My Mid-2015 15" is nearly new and one of the last to be available on the Apple store for sale. I'm not interested in some tech manhandling the Macbook due to Apple Software Engineering releasing a software update that disables the hardware.

I've lost my trust in Apple Software Development. It is clear the reported Bluetooth failures are consistent with the installation of 10.14.6. This is unacceptable.

While awaiting for a scheduled appointment to drop off my hardware, I've escalated this to the "Customer Relations Department" hoping for another resolution to the issue. If the 10.14.6 is truly causing the AirPort Cards to become corrupt, this is a major issue for all those reporting the failure.

Please open a case with Apple and reference any/all of the contact from these posts, and other posts searchable on any third party search engine. The reports of 10.14.6 corrupting the Bluetooth functionality are beginning to pile up.

Thank you Kevin for all your efforts, they are much appreciated... like many others I can’t afford to loose my MacBook for however long it takes to perform an unnecessary hardware upgrade, I will most certainly add my voice by logging a support case

Thank you, GarrySStanley! You are correct... it is an unnecessary hardware fix. Feel free to call the Apple Customer Relations line to voice the same issue and the same complaint for Apple's failure to take proper steps.