How can I update my android 6.0 version without Internet

[Android Central Question]

My device name Lenevo A7000 a how can I update android 6.0 because currently I unable to run Internet and any kind of social Media or Internet in My smartphone
so mostly I required this without Internet so please help me

 

[hallux]

If you can't get internet, you can't download the update file. Looks like Lenovo doesn't offer the update download from the website, to download from another device and flash it.