In order to upload, you have to wait until the voting ends.
Maybe not. The rules say:
'Game files are not locked so if you discover a major issue with your game file it is possible to change this afterwards, just make sure you make a submission before the deadline. This is only for game-breaking issues, don't use this feature to otherwise update your game before the rating period is over.'
I am not sure if this falls under that case since I am not the organizer. I leave the interpretation of the rules up to the developer.