-Updated kernel to 4.19.76
-Fixed several video driver issues including very low performance, YouTube videos in full screen freezing the Pi, low color resolution in xubuntu-desktop and graphical artifacts in kubuntu-desktop
-Fixed bluetooth by adding missing firmware file not present in firmware-nonfree
-Updated /boot/firmware/config.txt with useful HDMI debug flags -- uncomment some of these such as hdmi_safe if you are not getting display output
-Added lines in config.txt to configure SPI and i2C -- you can uncomment these lines if you need to enable them
-Updated WiFi firmware
-Added missing regulatory.db files (used by WiFi) to /lib/firmware