What I reccomend you to do is to completely remove and reinstall the Nvidia drivers with the proprietary ones. You can do this into Recovery mode - on the Grub boot screen select Advanced options for elementary os, then the first kernel version ot top with [Recovery mode] into it. Once the menu loads select first to configure network and then drop into the ...
I confirm that there are many MAC Mini that did not have a DVD player
Mac Mini 2011 : https://support.apple.com/kb/SP632?locale=fr_FR&viewlocale=en_US
if this is a tutorial form oemb1905, for Ubuntu is present on this link
Yes, you certainly can download a new ISO. You can verify the download using the hash listed here: https://elementary.io/en/docs/installation#creating-an-installation-medium
The hash is listed under the section "Creating an Install Drive"
What software did you use to make the USB? I recently created a successful USB drive using Etcher. I've tried Rufus ...
According to the table linked above your MBP appears to have 64 bit HW and EFI but are forced into 32 bit EFI mode in firmware. IIRC the boot images provided above should work with that machine.
FWIW, I've used them to install elementary in the past without issue (old iMac).
Give it a shot - will probably work.
Elementary OS is Ubuntu 18.04 with a different desktop environment(Pantheon) and custom applications.
You can install Ubuntu Server on ARM devices and then install the Elementary/Pantheon packages via the PPA. It has ARM builds from what I can tell. If it works as easily as it does on x86 hardware it should be pretty simple, although everything takes much ...
I just tried it in virtualbox, it has the correct sha256 and of course I simply select the ISO rather than copying it to a USB. It still throws an error and reboots instead of doing a media check. It seems to be broken (for everyone.)