How to find, download and save software Update on my Android

[His_Queen]

I have a Huawei LUA-L01, Android version 5.1 in a EMUI 3.1 Lite.

How do I - or where do I get to find a software update (system update) for my phone. Also how to download and save it onto my phone and then import it into my settings so it can be installed onto my phone

 

[B. Diddy]

If there's an official system update available for the phone, it'll show up in the system settings under the system update section. If it tells you the phone is up to date, then there are no more official updates for the phone (which is pretty old).