Well, pay a little bit attention in reading, will spare you time asking obvious things. Your screenshot shows that you copied it to:
/bin
instead, not sure why you again did not follow instructions/guide, as you should copy it to:
/root/bin
The reason why chmod gives the error is correct, there is no file. If you do not have bin folder in /root folder, then create it:
mkdir /root/bin
You could run it from /bin folder too if you want, but according to my post above, change in sysupgrade.conf's entry /root/ to /bin/upgradefw and run chmod +x /bin/upgrade