Comparative Analysis of Stock Firmware vs. Custom ROMs for Performance, Battery, and Utility. Device: Samsung Galaxy J8 (SM-J810Y/G/M) | Released: 2018 Date: October 26, 2023 1. Executive Summary The Samsung Galaxy J8 is an entry-level device launched with Android 8.0 (Oreo) and officially updated only to Android 9.0 (Pie). As the device ages, the stock firmware suffers from performance degradation, security vulnerabilities, and software obsolescence. Kon Boot — Iso Torrent