[fedora-arm] i2c-tools & serial port

Dear All, I need to update the firmware of a fan for the RPi4 and given the below instructions in Raspbian. I also installed sudo dnf -y install i2c-tools sudo dnf -y install python3-i2c-tools but the firmware update fails. I guess, it is because of the serial port not being enabled. Any advice? Thanks, Thomas In order to use bootloader, user need to have activated and free Serial Port on Raspberry Pi®. The below procedure is showing how to make sure that Serial Port is free and available for Bootloader process. sudo raspi-config Select -> Interfacing Options 1. IC Kernel ON 2. Serial option to enable UART Then it will ask for login shell to be accessible over Serial, select No shown as follows. At the end, it will ask for enabling Hardware Serial port, select Yes, Then, reboot the Raspberry Pi®!!