Update:
Was able to install in bootloader mode from file, but had to still manually reboot the device.
Now the device comes on and it seems like it should be working, but its producing no sound on its own. Linked to Microfreak V it still works though.
Also the "shift" button does not work, and i can't select a preset more than once. Very weird behaviour. I will try to update it again from this state i suppose.
UPDATE 3:
Seems to be working. I installed the firmware (from file) again onto this half working state. It still never rebooted, but this time i closed Minifreak V after it was done (Never even got an update complete, it just closed the update window on its own). After closing Minifreak V, i still had to manually reboot my Minifreak, which was scary. I also made sure to unplug the USB cable before booting it up again, just to be safe.
So just to reiterate everything that happened to me:
1. Tried to update to latest firmware (1.1.0.1080) using the green button.
2. Minifreak wouldnt reboot even after the "Update complete" message, so i forced rebooted it.
3. Minifreak would not boot further than the initial screen showing the name of the product.
4. Booted into bootloader mode using Shift + < Octave.
5. Installed Firmware from file while in bootloader mode. (Firmware version was showing as blank in Minifreak V).
6. Still had to manually reboot.
7. Tried Minifreak again and it booted up normally, but it didnt play the "bootup animation" with the LEDs, and everything was kind of broken and no sound was made. Minifreak V was controllable from it though. Shift button would not work.
8. Reinstalled the firmware AGAIN from file in this weird broken state. Closed Minifreak V after update was done and manually turned Minifreak off.
9. Unplugged USB connection just to be safe.
10. Booted Minifreak and now it is working with the latest firmware.
Interesting note: On my first firmware update, there were a bunch of different LEDs on. Those same LEDs were NOT on during other firmware installs. During the other firmware installs, some LEDs would instead come on and off depending on the progress of the update. I wonder if the LEDs that were lit up during the first update was an error code of some kind. (because its obvious that the LEDs are conveying information during the updates, for arturias internal support).
Sad edit:
Some presets seem to crash Minifreak, it just refuses to make any sound until reboot when selecting for example Preset 89 or 125.
Final update:
Tried to reinstall firmware again, and now Minifreak is completely frozen on the startup logo. Can't access bootloader anymore. Bricked.
Guess i'll have to contact support. What a crap day.