noob troubles  

noob troubles

Over a year ago I purchased an unused MK3S+ still in box.  Apparently, the only thing missing from the box was the gummy bears.

A few days ago I got around to setting it up.  The printer is out in the shop NO INTERNET ACCESS!

I wanted to print a dishwasher part that I downloaded off of thingiverse.

I peeled/popped the "Prusa" and border test print off of the plate.

Plugged in the printer.

The printer went through it's startup calibration and warmup.

firmware level 3.11.0.4955 (IIRC)

I attempted to load the black filament that had been packed in the box (it was still vacuum sealed)

It would not extrude, I kept pushing the "no it hasn''t extruded the new filament" option numerous times 

I attempted to load the filament with the Manual option, still nothing (maybe I didn't have the filament sliced sharp enough).

Anyway, I downloaded the latest firmware and the thingiverse file onto the SD card that was in the box.

Only to find out that is NOT how to install new firmware.

So, I downloaded the firmware update onto my laptop (old Linux Mint version)

Apparently, it has flatpak installed.

But running in a terminal window "sudo flatpak install flathub com.prusa3d.PrusaSlicer"

returned "Unable to load summary from remote flathub: URI https://dl.flathub.org/repo/summary exceeded  maximum size of 10485760 bytes"

(/home  has 4.5 Gb available)

Ever the optomist, i ran "sudo flatpak run com.Puusa3d.PrusaSlicer"

To which it replied...

"app/com.prusa3d.PrusaSlicer//x86.64 not installed"

I'm frustrated/lost.

Please help.