Firmware Oppo R15x < 2026 Edition >

, OPPO’s custom skin built on top of the Android operating system. Operating System: It launched with Android 8.1 (Oreo) and was later upgradable to Android 9.0 (Pie) User Interface: The primary firmware version used is ColorOS 5.2 , though some regional variants updated to ColorOS 6.0 Processor Compatibility: The firmware is optimized for the Qualcomm Snapdragon 660