Re: how to can update Huawei Honor 3C 4G (H30-L02) to android 5?
Huawei has released Android 5.1 for this phone. I have updated OTA. If this doesn't work you need to download the update image from Huawei.
I cannot post links because I am a new user. But a Google search for "荣耀3C联通4G版 B316" will show as one of the first results the site emui.huawei.com where you will find the image after clicking around a little bit.
Important is to download "B316" - if you have found it click the green button that says "下载" to download.
Then extract the contents of the zip file and put the folder "dload" into the root directory of your SD Card. Then run the phone's updater from the settings menu and choose local update..