A GSI is a "pure" Android system image that Google designed to run on any device that supports Project Treble. It’s one ROM that works on hundreds of phones. The Vivo 1610 uses a Qualcomm Snapdragon 425, which natively supports Project Treble.
An outdated operating system poses security risks and prevents you from running modern apps. Installing a custom ROM is the best way to breathe new life into this classic hardware. vivo 1610 custom rom
A compatible (typically ARM64, matching the Android target version, using the 'pico' or 'nano' variant to save space). The custom TWRP recovery image specifically compiled for the Step-by-Step Installation Guide Step 1: Unlocking the Bootloader