Or Here a summary of what changes are in this update
-Fixed various crashes in Mizuki's scenes
-Fixed the endings' descriptions in the Recollection Room
-Fixed an issue with Yui's, Rio's and Miyuki's sleep events
-Fixed an issue with one of Kanae's events
-Fixed an issue related to various extra scenarios
As For save? What the problem?
Your can file a save folder in inside the "www" folder for v1.07 and transfer it to v1.08
Or you can save the Save folder in a different location in your device then transfer it the game later on for you to run.
Ps I use the 2nd method personally for my future Game so I don't have to grind again