The Oppo A37f originally launched with Android 5.1 Lollipop under the ColorOS 3.0 skin. While the official road for system updates largely ended there, the enthusiast community has kept this legacy device alive through custom ROMs that bring Android 6.0 Marshmallow—and even later versions—to its hardware. The Marshmallow Experience (Android 6.0)
Upgrading your Oppo A37f to a Marshmallow-based ROM typically introduces key performance and privacy improvements that the stock Lollipop software lacked:
Doze Mode: A battery-saving feature that puts apps into a deep sleep when the phone is stationary, significantly extending standby time.
App Permissions: Gives you granular control over what data (like location or contacts) your apps can access.
Performance Stability: Android 6.0 is often smoother for the Snapdragon 410 chipset found in the A37f, especially when paired with a lightweight custom ROM. Top Custom ROM Options
Because official support for Android 6.0 was limited, most users turn to these community-driven projects: rom oppo a37f android 60 top
MIUI 8: A popular choice for those who want a feature-rich interface. It includes "Dual Apps" (running two accounts like WhatsApp), scrolling screenshots, and an enhanced calculator.
CyanogenMod 13 (CM13): The classic choice for a "stock" Android feel. It provides a clean, bloat-free Marshmallow experience with high customization.
Potato ROM or LineageOS: For those looking beyond 6.0, community ports of LineageOS and Potato ROM have even managed to bring versions as high as Android 10 to the A37f. Performance Note
The A37f is equipped with 2GB of RAM and 16GB of internal storage. To keep the phone fast on newer software, it is recommended to use "Pico" or "Nano" GApps (Google Apps) packages to save precious system space.
A37F Original OPPO A37 4G LTE Dual SIM 2GB RAM 16GB ... - eBay The Oppo A37f originally launched with Android 5
Here is the situation regarding software for this specific device:
The OPPO A37f (often the Asian/Indian variant) was released with ColorOS 3.0 based on Android 6.0 Marshmallow.
Step 1 – Boot into Fastboot Mode
fastboot devices to confirm.Step 2 – Flash TWRP
fastboot flash recovery twrp_a37f.img
fastboot reboot recovery
Step 3 – Wipe Partitions In TWRP: Wipe → Advanced → Select: Dalvik, System, Data, Cache. Do not wipe Internal Storage if you have the ROM file there. "Top" : There is no specific custom ROM called "Top
Step 4 – Flash ROM & GApps
LineageOS-13.0-a37f.zip)Step 5 – Wipe Cache & Reboot After flashing, wipe cache/dalvik again. Reboot to System. First boot takes 5–10 minutes.
Even a top ROM can suffer from battery drain. Greenify (root mode) hibernates background apps. With Android 6.0’s Doze mode, this combo yields 6+ hours SOT on the A37f.
For minimalists who want only Google’s vanilla Android without any modifications, the pure AOSP build is the holy grail. Compiled from Google’s Android Open Source Project, this ROM has no customizations, no bloat, and no extra apps.
Highlights:
Downsides: Lacks advanced features (no quick settings edit, no themes, no root). You’ll need to manually install GApps and root.
Stability: 10/10 – If you install the correct vendor fixes, it’s solid as a rock.