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I have a client who has a few hundred of the Smart Ultra 6 devices & they are getting failed update messages when trying to update to Android 6.0.1.
The following has been done;
Does anyone have a zip file etc that i can download & update on the device ?
Please see this previous thread, not sure it it also applies to the Ultra 6 and this will be something the forum team willl be able to confirm.
Thanks but that is showing you onscreen guide on howto update... a very basic guide, as I stated ive done the cache wipes & device wipes so need the SD update for the device.
The problem seems to be that, if the device is made by ZTE, it's been caught up in the US/China trade war - that's what's referred to in the thread @AnnS has linked. This will be resolved at some point but, until then, everyone else is collateral damage, sadly.