So, I got the Huawei Ascend G6 and I haven't been able to upgrade since Jelly Bean. Last month, my sister who bought the exact same phone just a week after I did, came to me complaining how her interface "suddenly" looked totally different. It looked like she updated her phone to Kitkat. She told me, the phone asked her to upgrade and she did.
Now, even when I try, I can't seem to upgrade. When I press "online update", it just says "No updates found". So how do I figure out, what the latest upgrade possibilities are for my phone? Maybe I did get a slightly older model after all, which can't upgrade for some reason?
We both haven't rooted our phone and I'm not planning on doing so.