I looked in the history but cannot find any thread about this. can you update while printing or will it crash you print, spit in your beer and run away laughing?
I expect you cannot but still I feel the need to check!
It depends what you’re updating. You should be fine to update Mainsail/Fluidd/KlipperScreen during a print, and even Moonraker might be ok. You definetely cannot update Klipper while printing, though, since it might restart itself.
Since Moonraker doesn’t let you update while printing, you can SSH/PuTTy in and use KIAUH instead.