Download Vivo Y93 Y91 Y91i Y91c Auth File Firmware4mobile Com Rar May 2026

: Use a modified version of SP Flash Tool or professional boxes like NCK Box or Miracle Box . 3. How to Use Auth Files in SP Flash Tool

To flash or unlock devices, you often need specific DA (Download Agent) and Auth (Authentication) files because these MediaTek-based models feature a Secure Boot system. Without these files, standard flashing tools will return a "BROM Exception" error. 1. Download Required Files : Use a modified version of SP Flash

: Flashing will wipe all internal data; perform a full backup if possible. perform a full backup if possible.