Odroid U3 error trying to install.

[HiDeHo]

Hi I have an old Odroid U3 that i am trying to revive with arm os. i have been following the tutorial here https://archlinuxarm.org/platforms/armv ... /odroid-u3

everything seems to work ok untill i get to step 7. Flashing the bootloader files

running the command "./sd_fusing.sh /dev/sdb" gives the following error "bash: ./sd_fusing.sh: cannot execute binary file: Exec format error"
I then ran this command "file sd_fusing.sh" and got this result "sd_fusing.sh: data" I would thing it would say shell script as that is what the file is its not a data file.

I tried I tried the tutorial 2-3 times and still get the same errors.

I am using Ubuntu 20.04 to run these commands on.
I appreciate any help you can give.