here is a thread on how to make them right side up to begin with
http://www.quiltingboard.com/qb-help...s-t230836.html
the trouble with 'smart phones' is that they show them to you right side up no matter how they were taken and you don't know that they are not right side up until you upload them to the board.
as far as i know, there is no way to rotate them once they get uploaded to the board. you are right that it is so much more enjoyable to see someone's work right side up. MzzzQuilts/Ellen's advice sounds like a fairly simple way to fix them for your own enjoyment.