There are two primary methods to install PCHM10 firmware. Use Method 1 for official updates and Method 2 for unbricking or full system restore.
Unlike many brands, OPPO uses proprietary flashing tools. The two main methods are: oppo a11 pchm10 firmware
This comprehensive guide provides everything you need to know about the OPPO A11 (PCHM10) There are two primary methods to install PCHM10 firmware