I tried to update my 1.5.2 version to 1.8.7 but when I did it, the tree and Ayrton Senna became white and I can't start a single level, it just doesn't load. I can't delete the update or update the game back to 1.5.2. Please help I nearly completed the wh

I tried to update my 1.5.2 version to 1.8.7 but when I did it, the tree and Ayrton Senna became white and I can't start a single level, it just doesn't load. I can't delete the update or update the game back to 1.5.2. Please help I nearly completed the wh