It was automatic update from internet
i deal many mag 322 box everyday , all brand new in box i check each and every , with tv and internet , i never had single piece which did auto update by it self (unless you did activate your self ) right after boot , i always select either URL or use USB from recovery menu (in case of downgrade firmware)
my doubt is you might get clone box ...i hope i am wrong but here in north america i see chinese clone . here are many other experts than me may be they can firmly point out , all your syptoms i face many time , but i only deal with genuine mag 322 so never had any issue...