Firmware Oppo A57s

If you are troubleshooting or chatting with support, you may need to know your current version. The version number usually looks like this:

CPH2407_11_A.12

For the OPPO A57s, firmware refers to the low-level software that controls hardware components — not just the Android OS. It includes:

OPPO distributes firmware updates as full OTA packages or incremental patches, signed with OPPO’s cryptographic keys. Firmware OPPO A57s

Before doing anything:

Once you have successfully installed the firmware, maintaining it is vital for security and performance.

How to enable automatic updates:

Latest Firmware Versions (as of 2025):

If your phone says "Your system is up to date" but you know a newer patch exists in another region, you cannot force a cross-region OTA update. You would need to manually flash that region’s firmware (which may break 4G LTE bands).

OPPO promised one major Android update for the A57s (typical for budget phones). If you are troubleshooting or chatting with support,

| Update | Firmware Version | Release | Changes | |--------|----------------|---------|---------| | Android 12 → 13 | CPH2387_11_C.20 | July 2023 | Android 13 + ColorOS 13 (Aquatic Design), new media player, improved privacy indicators, better RAM expansion. | | Security patch only | C.22 | October 2023 | October 2023 security patch, fixed a Bluetooth stability bug. | | Security patch only | C.24 | January 2024 | January 2024 patch, improved thermal throttling during summer. | | Final known firmware | C.26 | April 2024 | April 2024 security patch, fixed a bug where notifications wouldn't clear. |

After C.26, OPPO moved the A57s to quarterly security updates (as per their policy for budget devices).

No Android 14 – the MediaTek Helio G35 and limited eMMC storage made Android 14 too heavy; OPPO confirmed this in a community post in May 2024. CPH2407_11_A