You say "usb is still on the machine" and you "finally saw 8.3.1 version". I don't understand the problem.
If you wrote the .img file to the usb flash drive and booted it, you should see the 11 item console setup menu. Rather than doing an install, you dropped a bootable copy (running image) of the OS on the flash drive. You won't see an installation menu - there's nothing to install (you've already done it).
If you want to see the installation menu, burn the ISO to a CDrom and boot from it. If you don't have a CDrom in your server, use another pc. Boot from the CD (you'll see the installation menu) install it on your flash drive, and take it back to your server.
Either method above, will result in getting the OS installed on your flash drive.
Once the OS is installed, you can use the GUI to configure your system.
If this still doesn't answer your question, don't use the term "installation menu", in your reply. Describe what you're trying to accomplish - perhaps you want to configure something. And, don't realize it can be done from the GUI.