EMUI 8: Where is the downloaded OTA located?

I downloaded the latest version of EMUI 8 for my Huawei Nova 2i (RNE-L22), the file size is 3GB. Before installing the update, I'm planning to do a factory reset but that means I will need to re-download the update. The problem is I have a very limited internet connection, so I wanted to move the file into my SD-Card and flash it later. I couldn't find where the file is located, anyone knows where it is? Anyway, I downloaded the update by navigating into the Settings > About Phone > System Update.