I totally agree.....Hallo Arturia .
I have the exact same problem as "Ciper".
I have tried to reinstall the latest firmware  several times.  without any success !?
The update process always halts/ stops when the firmware update is in progress.?
I also tried to delete any ( perhaps) corrupted program files that had been created before the problems occurred  .. wish maybe would cause problems when rebooting,,, but NO  it  didn't ?
Come on Arturia... please do help us with this quite nice but "unfinished" product ,and send us (loyal customers )  the necessary files and correct help/guide how to install without any flaws.
I have several of your products ,and even signed up for the new MatrixBrute . I would like to have the same confidence in all my  Arturia instruments,   "older, present & future" gear.
 My Best Regards / Moognus