Download the Flycast emulator file on your computer
Make sure the file is compatible with your TV device or TV box
Insert a USB drive into your computer
Format the USB drive to FAT32 or exFAT if needed
Copy the Flycast emulator file to the USB drive
Safely eject the USB drive from your computer
Plug the USB drive into your TV or TV box
Open the TV file manager or installer app
Find the Flycast emulator file on the USB drive
Select the file to start installation or transfer
Follow the on-screen prompts to complete setup
Open Flycast from the TV apps menu after installation
Add your game files or BIOS files if required
Remove the USB drive after installation is finished