I did #2, but I also turned off letting any updates post for 30 days. so far I have gone a whole day without losing my bt.
Bluetooth Issues Since Surface Updates - 5 August 2021
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Anonymous
The Bluetooth on my Surface Pro (5th Gen) has not been working properly since the Surface Firmware Updates this morning. I have to restart to get it to work and then it only works properly for about 5 minutes. I have tried rolling back and reinstalling the Marvell driver. Also the Bluetooth troubleshooter doesn’t fix it. Running that troubleshooter causes Bluetooth to completely stop working. Will you please fix this urgently as it is a major issue for me?
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Surface | Surface Pro | Network
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Anonymous
2021-08-18T15:38:19+00:00 -
Anonymous
2021-08-18T15:02:53+00:00 Sorry that you had your hopes raised and then dashed, dave, but the same (i.e. a notification that the driver had been updated) happened to me about a week ago, a couple of restarts after I had updated or reinstalled the driver.
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Anonymous
2021-08-18T14:19:07+00:00 No, that's not, unfortunately. After updating it gives same issues.
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Anonymous
2021-08-18T14:04:47+00:00 I saw on my Windows Update install history this morning that a Marvell BT adapter update was applied today. Hopefully, this is the fix we have all been waiting for!
Marvell Semiconductor, Inc. - Bluetooth - 15.68.17021.121
Successfully installed on 8/18/2021
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Anonymous
2021-08-18T08:21:37+00:00 My Surface Pro 2017 i7 16gb 1TB suffering from same issue. Instructions above does not help at all. In 2-5 minutes after reboot my Microsoft Sculpt Comfort bluetooth mouse stops working and in few minutes more my Logitech K380 bluetooth keyboard stops working. Then sometimes bluetooth icon disappears from the taskbar and I got an exclamation mark on Marvel AVASTAR Bluetooth Adapter saying Windows has to stop this device because it worked incorrectly. I've tried to revert back old drivers, tried to download .MSI above for my device and reinstall all the drivers. Tried to change batteries in my devices for a new ones just in case. Tried to reset my Surface fully with a full data wipe even but the issue still persist since this is a firmware bug and I am not able to revert it.
I really think on selling my Surface and getting Samsung Galaxy Book Pro 360 instead or something like this...