unity 3.5 crash on android 5.0

Hi My old project was made with unity 3.5. Now it works good with android 4.4.2 but crashes on android 5.0. I can't upgrade my project to new version of unity because most of my project's assets rotation, position is wrong when I upgrade and I must set all again. Is this crash because of wrong Minimum API level in unity 3.5? if I install new SDK version then can I run unity 3.5 on android 5.0 ?