Hello there, Marian si claro que si Of course there is a script tool to use in terminal called mb-reset: I will add a link so that you can have a look how it works this mb-reset tool to recover maboxlinux. I advise you can save files from a Manjaro Live usb before you use this mb-reset tool from terminal : https://manual.maboxlinux.org/mabox-doc-en/maintenance/mb-reset/
Please also check in this forum in the search symbol typing : mb-reset
I will let you a link in the forum as a start:
Don’t forget we have a Telegram group to get live help & support as well