Step 1: Format your USB key to a blank FAT32
Find the device name of your USB key name (in our examples we will use /dev/sdb)
fdisk -l
Delete the old partitions
fdsik /dev/sdb d w
Wipe MBR
dd if=/dev/zero of=/dev/sdb bs=1M count=10
Create new FAT32 partition
fdsik /dev/sdb n <enter> <enter> t b w
Make DOS file system
mkdosfs -F 32 -I /dev/sdb1
NOTE: If you don't have mkdosfs you will need to install it
dnf --enablerepo=fedora install dosfstools
Step 2: Copy the image files from your computer
Copy all the file from the image zip to the USB key using your computer
Step 3: Make the USB key bootable
mount /dev/sdb1 /mnt cd /mnt/utils/linux/ ./makeboot.sh /dev/sdb1
Answer yes to all questions
NOTE: if your don't have glibc.i686 you will need to install it
dnf -y --enablerepo=fedora --enablerepo=updates install glibc.i686
You can now boot your USB image