The Y75A originally shipped with based on Android 7.1 (Nougat) .
Before diving into the flashing process, it is crucial to distinguish between the firmware types available for the vivo Y75A. vivo y75a global firmware
The internet is filled with malware disguised as firmware. Avoid "auto-installer" EXE files or torrents with no comments. The Y75A originally shipped with based on Android 7
Download the official firmware package for your specific model. Place the file in the root directory vivo y75a global firmware
No. The is strictly for model number Y75A (PD2134F). Flashing it on a Y75 or Y75s (MediaTek chipset) will hard brick the device.