Engineering firmware is a "factory" version of the operating system used by developers and repair centers. Unlike the standard MIUI/HyperOS you see daily, this version is stripped-down and unlocked to allow deep-level system access. It is specifically used for: Dead Boot Repair
Package Contents
After extracting the firmware files, the flash_all.bat (or similar script) is executed while the device is connected to a PC via USB. Critical Warning xiaomi redmi note 10 5g camellia eng firmware7z exclusive