I had the same problem trying to connect kodi to my NAS. I managed to workaround this issue by defining the minimum SMB version to 1 and the maximum to 3 in the kodi SMBclient configurations. The minimum was selected to 'none' - then suddenly I could browse my SMB shares like I did in the previous recalbox version. I hope this helps!
Thanks for answering, but I think that it is not a Recalbox problem because when i plug a mobile charger as a power supply to my raspi it boots normally. Furthermore, this boot screen appears if I try to boot NOOBS too.