[HELP] how to delete the new lollipop update?

hey guys. i downloaded the 18.6.A.0.175 or the lollipop update for my xm2. but i cant install the update bcs it says that my memory is full. i want to delete the 18.6.A.0.175 file bcs it consume a lot of my internal memory. can you help me guys where or what file that i want to delete?
thank you, have a good day :)


ps: sorry for my bad english :)