Shell
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install libdbus-1-dev libglib2.0-dev libudev-dev libical-dev libreadline-dev docutils-common -y
wget http://www.kernel.org/pub/linux/bluetooth/bluez-5.72.tar.xz
tar -xf bluez-5.72.tar.xz
cd bluez-5.72
./configure
make
sudo make install
Restart Bluetooth service to apply changes.
Shell
systemctl daemon-reload
sudo systemctl restart bluetooth

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Add support for Linux to iOS connections.

BlueZ 5.51 and above try to automatically read the battery status/service of devices when they connect. However, iOS devices will default prevent BlueZ services from reading the battery service. As a result, BlueZ connection attempts will cause iOS devices to show a pairing prompt constantly. Therefore, we must disable the battery service in BlueZ using the following steps.
  1. With your favorite editor, open the bluetooth service file. On Raspberry Pi OS it’s located: /usr/lib/systemd/system/bluetooth.service, on other versions it may be here: /etc/systemd/system/bluetooth.target.wants/bluetooth.service. You will probably need to use su permission to write to this file.
  2. Find the line beginning with ExecStart= and add -P battery to the end. Now the line should look like this:
Shell
ExecStart=/usr/lib/bluetooth/bluetoothd -P battery
3. Save the file 4. Restart Bluetooth service to apply changes.
Shell
systemctl daemon-reload
sudo systemctl restart bluetooth
5. By default, connections between dual-mode devices will use bredr mode, which is not supported for BLE communication between Linux and macOS. To address this, configure BlueZ to operate in LE mode by modifying the configuration file: /etc/bluetooth/main.conf. Add or uncomment in the [General] section to change the setting:
Shell
ControllerMode = le
After that, BlueZ should be able to connect to iOS devices without prompting and Ditto Apps should be able to communicate over BT-LE between iOS and Linux.

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Run the following command to set BlueZ’ support for multiple advertisements.

Shell
sudo setcap 'cap_net_raw,cap_net_admin+eip' `which hcitool`