I havent tried to revert it back cuz i formatted my laptop(which is stupid, i should have tried it). So to answer your question, I am sorry I dont know.There is a function to revert back to last build. Go to settings>updates>advanced.I went to google about that issue. And I've seen that others will have to revert back to windows 8 since there doesn't seem to be a function to revert it back to 10240. Is that true? or you can revert it back without any problems?
then you must be the lucky one! i got BSOD with KMODE EXCEPTION NOT HANDLED (dump_wmimmc.sys) something error on GGI've had no problems with windows 10 build 10580 when playing the server at all.