This hoverboard doesn't have any unlockable upgrades.
Rose was the ninth limited hoverboard in Subway Surfers. It was released in the Subway Surfers World Tour: Paris edition. Like any other hoverboard, it will protect you from crashing for 30 seconds. When crashed, the board will explode and recharge for a few seconds before it can be used again. It has no special ability. The hoverboard has a print of a thorned rose on it hence its name, while the background is the French flag.