You can transform your existing Android 6 interface to look exactly like Android 11 without rooting.
Where to find the file: Do not trust random file hosts. Go directly to the XDA Developers Forum for the OPPO F1s. As of the latest updates, search for "LineageOS 18.1 OPPO F1s" or "Pixel Experience F1s." Always check the last post date; many of these projects are now abandoned.
Let’s be honest: Installing Android 11 on an OPPO F1s is a project for enthusiasts. For most users, the performance hit, battery drain, and broken features (like camera quality dropping) make it not worth it.
Instead, consider these legal and safe ways to get the Android 11 experience without touching your system partition:
If you are ready to take the risk, follow this rigorous guide. Assume that your warranty is void, and you could brick your device.
Before you download anything, you must:
The OPPO F1s hardware is nearly a decade old. The SoC (MT6755) cannot handle the resource demands of Android 11's background restrictions, permissions manager, or scoped storage. Even if you force the update, the phone will be:
Consider looking at a used OPPO A series (like the A54 or A74) if you need a budget phone with Android 11.