Add a warning regarding the serial number

- { mode: /e/ smartphones }

before_install_file_name: before_install_emerald

install_e_file_name: install_e_emerald

requirements_file_name: requirements_emerald

{% include templates/requirements.md %}

{% include alerts/danger.html content="/e/OS on Teracube 2e is only compatible with Android Stock 10 firmware. For more details refer [this guide](https://community.myteracube.com/t/important-read-before-flashing-difference-between-the-new-2022-batch-vs-2021-batch-of-teracube-2e/3293)"%}

{% include alerts/danger.html content="Before moving forward, ensure your device is a Teracube 2e (2021). Please look at the serial number under the battery or dial \*#06#. If the serial number start with 2020 (ex: **2020**11T2Exxxxxx), your are at the good place! If it starts with 2021, please move to [Teracube 2e (2022) documentation](../emerald/install)"%}

{% include templates/requirements.md %}

{% include alerts/danger.html content="Before moving forward, ensure your device is a Teracube 2e (2022). Please look at the serial number under the battery or dial \*#06#. If the serial number start with 2021 (ex: **2021**11T2Exxxxxx), your are at the good place! If it starts with 2020, please move to [Teracube 2e (2021) documentation](../2e/install)"%}