how to upgrade past 4.4.4?

[jesscompton28]

How to upgrade Qlink zte 817 from 4.4.4 to new version.

 

[webworkings]

If your phone itself doesn't offer the upgrade on it, then there is no way to 'upgrade' it. You can consider rooting the device, but that wouldn't actually be an 'upgrade' and then you have risks with that, which can actually brick your device.