Leo hit 'Reboot System.' This was the "Long Minute." If the phone stuck on the logo, it was a bootloop—a digital coma. If it vibrated and moved past it, he was a hero.
For the Oppo F1s (which has only 3GB/4GB of RAM), MIUI 8 feels surprisingly snappy.
Since the Oppo F1s natively runs (not MIUI), this post focuses on the custom ROM experience, the pros/cons, and a realistic guide for enthusiasts.
He wiped the system partition, erasing the phone's identity. It was a blank slate. He selected the .zip file—a community-made port optimized for the F1s hardware. The progress bar crawled across the screen. Flash successful.