Pretty much as the title says, I just started to use my flipper zero today and accidentally updated without having an sd card, so I went out to buy one. Once I put it in and updated I got the “no databases found” error, after looking online a bit I found I needed to reformat the sd card, then update again. This did absolutely nothing, I’m still stuck with the error despite all my different attempts.
Did you try entering DFU mode and updating from there?
Repairing via DFU in FS worked, thanks!