Users that already received the new firmware are reporting that it has a size of around 200 MB, therefore it's recommended to download it using a stable WiFi connection to avoid
unwanted data charges.
Because of its size, we recommend you to use a stable WiFi connection while downloading the update file in order to avoid
unwanted data charges.
It's recommended to download it using a Wi - Fi connection to avoid
unwanted data charges and to have over 50 % battery life so the phone won't shut down during the installation.