Boot into by pressing and holding the Power and Volume Down buttons simultaneously. Select your preferred language (e.g., English).
For security reasons, avoid downloading "Nougat" firmware from unofficial websites, as these files can contain malware or brick your device. If you require a more modern Android version, you may need to look into community-developed custom ROMs (like LineageOS), though these require advanced technical knowledge and void your warranty. safely back up your data before attempting any manual software changes? How to check & update your Android version Oppo F3 Nougat 7.1.1 Update Download
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