The ReRa1n tool can downgrade iOS on Windows and linux. ReRa1n is officially supported on Windows and quickly downgrades Apple devices from A5 chip to A11
Tag:
downgrade
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You are in iOS 13 GM (Gold Master), wondering how to exit GM / beta to get official. this is a basic manual on a way to downgrade to be prepared for updating to a new edition
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First, please back up all device data to prevent possible unfortunate circumstances. On iPhone, please access Settings> iCloud Account> iCloud> Backup iCloud (Setting> Apple ID> iCloud> iCloud backup) and turn it on to make backup.