wget https://raw.githubusercontent.com/UCTRONICS/UCTRONICS_HDMI_CTS/master/uc586/hdmi_480x800_cfg.sh
sudo chmod +x hdmi_480x800_cfg.sh
sudo ./hdmi_480x800_cfg.sh
wget https://raw.githubusercontent.com/UCTRONICS/UCTRONICS_HDMI_CTS/master/uc595/hdmi_1024x768_cfg.sh
sudo chmod +x hdmi_1024x768_cfg.sh
sudo ./hdmi_1024x768_cfg.sh
sudo nano /boot/config.txt