APKPure Appを使用する
YETIUpdaterの旧いバージョンをダウンロードすることが可能
YETIデバイスのファームウェア更新ツール
With this app you can update software of your phone with the official support of the manufacturer or operator.
The Android updates are so easy to install that you simply need to download a software in your phone(firmware), this app include links to download the latest android version in your smartphone.