Unofficial "hot" files from third-party forums may contain malware or outdated security patches. Oppo F9 review: Pretty and cheap - Mashable
Technicians use a combination of these files to perform advanced software maintenance: oppo f9 oppo custom file hot
Since you are dealing with "custom files," the risk of bricking is real. Follow this hot guide strictly. Unofficial "hot" files from third-party forums may contain
: Flashing custom or modified files carries a significant risk. Using the wrong file or disconnecting the device during the process can permanently "brick" (disable) the phone. It is always recommended to use official OPPO Software Updates and back up your data before making any system changes. : Flashing custom or modified files carries a
buttons while the device is off, allowing you to perform a factory reset if the system becomes unstable. Flashing custom files and system partitions like oppo_custom.bin