The official , as the phone has reached its end-of-life status and its hardware cannot support modern operating systems . Released in 2016, the OPPO F1s (A1601) officially launched with Android 5.1 Lollipop and received its final stable upgrade to Android 6.0 Marshmallow with ColorOS 3 .
Because the F1s was discontinued years ago, it will not receive further official Android updates from Oppo. Therefore, you cannot download an official update to Android 11 from Oppo. The only way to get a modern Android version on this device is by flashing an unofficial custom ROM.
Look for stable project ports like LineageOS 18.1 or AOSP Android 11 tailored specifically for the Oppo F1s (A1601). Reputable platforms like XDA Developers are the safest source for these builds.
Most custom ROMs do not include Google Play Services to save space. Download an Android 11-compatible GApps package (BiTGApps or OpenGApps "Nano" or "Pico" variants are recommended for 3GB/4GB RAM configurations). oppo f1s android 11 update download
To experience Android 11, you must use or Generic System Images (GSIs) developed by the community. Requirements Before Downloading
You cannot install custom software on a locked bootloader.
This blog post is for informational purposes only. We do not encourage or support any actions that may void your device's warranty or cause damage to your device. Proceed with caution and at your own risk. The official , as the phone has reached
Before diving into the update process, it's essential to confirm whether the Oppo F1s is eligible for the Android 11 update. According to Oppo's official statement, the F1s is not on the list of devices that will receive the Android 11 update. However, there's a silver lining – Oppo has been known to provide unofficial updates and community-driven projects have made it possible for some devices to receive Android 11.
Modifying your smartphone's operating system carries inherent risks. Proceed only if you accept full responsibility for your device. Crucial Risks
via unofficial community projects, it requires technical expertise. For most users, the device is considered obsolete for modern app compatibility. Therefore, you cannot download an official update to
Flash a custom recovery like TWRP to enable the installation of custom zip files.
To understand why the phone cannot update further, review its base system specifications: Specification Details Chipset MediaTek MT6755 (28 nm) Launch OS Android 5.1 Lollipop Maximum Official OS Android 6.0 Marshmallow Custom Interface ColorOS 3.0 How to Check for Last Available Official Updates
[Vlog] Oppo F1s, custom roms, and rant about software support
One popular choice is , which is based on Android 11. Websites like FlashYET list Custom ROMs that can "extend your phone's life by supporting older hardware with newer Android versions" and remove "bloatware" for a "clutter-free Android experience".