Never. The hardware is different (Dimensity vs Snapdragon). Flashing wrong firmware will hard-brick your device.
This feature can cause extra heat and sluggishness on the A78 4G. Go to Settings > About device > RAM and toggle RAM Expansion Optimize via Phone Manager: Use the pre-installed Phone Manager app to scan for power-draining apps and clear system junk. Refresh Rate: firmware oppo a78 4g hot
"Now it sits at 36°C. No lag. SOT went from 5h to 8h. Firmware saved this phone." This feature can cause extra heat and sluggishness
The new firmware introduces several features aimed at improving the user experience on the A-series: [Official version / IN] OPPO A78 Android 14 x ColorOS 14 No lag
Have a different experience? Share your firmware version and temperature readings in the comments below. We update this article monthly based on new OPPO releases.