Upgrade 9.4.8 to 10.1.0 from Bootable USB not working

I am trying to upgrade a 3600 currently running 9.4.8 to 10.1.0 using the instructions at: https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/umd_make_install_9_4_x.html   I created...