Before you install the new Ubuntu Server image you should first swop SD card and use Raspbian to install the latest firmware by using the following commands:
sudo apt update && sudo apt dist-upgrade -y
sudo rpi-update
sudo rpi-eeprom-update -a
Before you install the new Ubuntu Server image you should first swop SD card and use Raspbian to install the latest firmware by using the following commands:
sudo apt update && sudo apt dist-upgrade -y
sudo rpi-update
sudo rpi-eeprom-update -a