Replace incorrect Bluetooth version check

The content before would have displayed the version of the bluetoothctl utility,
not the supported Bluetooth version of the device. The new, simpler method shows
the actual Bluetooth version of the device.

Author: jacobgkau

content/bluetooth.md

@@ -101,33 +101,16 @@ sudo nano /etc/tlp.conf
 
 ### Bluetooth Version
 
-Bluetooth 5.0 is backwards compatible with older Bluetooth versions, but older Bluetooth versioned devices are not always compatible with newer versions or devices.
+Computers with newer Bluetooth versions will generally work with devices built for older Bluetooth versions, but devices requiring newer Bluetooth versions may not work on computers with older Bluetooth versions.
 
-Use bluetoothctl, on your terminal type:
+You can check your computer's Bluetooth version by installing and running the `inxi` tool:
 
-```bash
-bluetoothctl
-```
-
-If you have multiple Bluetooth controllers, choose the one you wish to connect to the device.
-
-Check list of controllers:
-```
-List
-```
-
-Select the controller you want to use:
-
-```
-select <mac address>
-```
-
-Check the version:
 ```
-version
+sudo apt install inxi
+inxi -E
 ```
 
-![bluetoothctl version](/images/bluetooth/bluetooth_1.png)
+The Bluetooth version for each wireless card will be displayed at the end of the `Report` line. For example, if the output says `bt-v: 5.2`, then your computer supports Bluetooth 5.2 (and below).
 
 ### Signal Interference