Let’s assume you want to flash (the most common query). Here is the exact workflow:
vivo does not officially provide bootloader unlock tools or kernel source code for most of its devices, including the 1610. This makes custom ROM work significantly harder than on devices from Xiaomi, OnePlus, or Google. vivo 1610 custom rom work
Many ROMs for older Vivo models like the 1610 may have "broken" features, such as the camera, VoLTE, or FM radio, because the original source code (drivers) is often proprietary and not shared by Vivo. Let’s assume you want to flash (the most common query)
