Checking what version of Bluetooth you are running under Windows.

• Open Device Manager:

  • Press Win + X on your keyboard to open the Power User Menu.
  • Select "Device Manager" from the list that appears.

  Alternatively,

  • Press Win + R to open the Run dialog box.
  • Type devmgmt.msc and press Enter.
• Locate the Bluetooth Adapter:
  • In Device Manager, find the category labeled "Bluetooth" or "Bluetooth Radios."
  • Expand this category by clicking on the arrow next to it. You should see your Bluetooth adapter listed here.
• Access Advanced Properties:
  • Right-click on your Bluetooth adapter's name and select "Properties" from the context menu.
  • In the Properties window, navigate to the "Advanced" tab.

• Configure Advanced Settings:

  In the Advanced tab, we are looking for the LMP value in the Firmware Section:

• LMP 0.xxx – Bluetooth 1.0b
• LMP 1.xxx – Bluetooth 1.1
• LMP 2.xxx – Bluetooth 1.2
• LMP 3.xxx – Bluetooth 2.0 + EDR (Endpoint Detection and Response)
• LMP 4.xxx – Bluetooth 2.1 + EDR
• LMP 5.xxx – Bluetooth 3.0 + HS (High-Speed)
• LMP 6.xxx – Bluetooth 4.0
• LMP 7.xxx – Bluetooth 4.1
• LMP 8.xxx – Bluetooth 4.2
• LMP 9.xxx – Bluetooth 5.0
• LMP 10.xxx – Bluetooth 5.1
• LMP 11.xxx – Bluetooth 5.2
• LMP 12.xxx – Bluetooth 5.3
• LMP 13.xxx – Bluetooth 5.4

In the image below we can see that the value of LMP (Link Manager Protocol) is 10.256 which is = to Bluetooth 5.1