TP2 just tried to force me to Hard Reset.. how/why?

[boredandtattooed]

sorry i couldnt get a screen shot of the message but ive never seen it before ever..

soft reset my phone, dual boot poped up, chose windows, and got something like this: this was on an all black screen and the text took up the whole window

Your phone will not boot due to (something) or an unautorized download.. please press volume up to hard reset your device, or any other button to cancel.. this will erase all info and reset your device to factory settings...

hadnt downloaded anything in a few days.. it was just a soft reset like i do most mornings.. id never seen that screen like that before..

needless-to-say, i cancel the hard reset and dual boot showed again, clicked windows and it booted perfectly... dunno why, but my phone wanted a hard reset, but in the end didnt actually need it..

anyone seen this screen, in this fashion before??