I just got my M3 from Amazon last week. No OTA update coming. Still on Android 6.0. Will I eventually get 7? Or do I need to force something using the firmware finder? I find the useability ok with 6, so I don't want to rush and mess anything up.
Yes, you will eventually get it. I bought mine from Amazon just after Thanksgiving, and just got the OTA update last week.
I didn't tinker with Firmware Finder because from all the posts here, it seems that it's easy to make a mistake and create lots of work and confusion for yourself, or brick the tablet at worst. And the warranty would not help to resolve a problem like that.
I found marshmallow to be just fine - all the features I needed, and good battery life. However, I absolutely did not like the EMUI 4 interface - it was non-standard and inflexible. Nova Launcher solved that until EMUI 5 arrived with nougat last week, now I'm happily back to stock.
If I were you, I'd just hang in there with what you have, and enjoy the great hardware, with the promise of better software. I do feel your pain with the way Huawei is handling this, though. They should at least be up front, and confirm that the tablet will soon receive an OTA update, and give a timeframe. I've lusted after a Huawei phone, but having second thoughts because of the way this went down.
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