![]() The Engine firmware is not static as it holds system-specific configuration and can additionally be slightly configured by the Engine co-processor while the system is running in order to provide the proper support and functionality. CODE is the actual Engine firmware whereas DATA is where all the system-specific settings are stored, as configured by the OEM at the factory via Intel Flash Image Tool. ![]() The Engine firmware Regions (RGN/EXTR) consist of two sections: CODE and DATA. The (CS)ME or (CS)TXE firmware at the system's SPI/BIOS chip is always EXTR, generated by the OEM after configuring the equivalent RGN at the factory via Intel Flash Image Tool (FIT). The Type of each (CS)ME/(CS)TXE firmware Region can be either Stock (RGN, clean/stock/unconfigured images provided by Intel to OEMs) or Extracted (EXTR, dirty/extracted/configured images from various SPI/BIOS). The mandatory regions are the Flash Descriptor (FD, controls read/write access between the regions among other things), the (Converged Security) Management or Trusted Execution Engine (CSME/CSTXE/ME/TXE, holds the Engine firmware which has been configured for a specific system) and the BIOS. The SPI/BIOS chip firmware is divided into regions which control different aspects of an Intel-based system. In this guide, the term "system" means an individual user machine whereas "model" refers to all those "systems" released by the OEM. ![]() Although the guide can be used for that sometimes, the goal is not to update the firmware but to clean the already existing one inside the dumped SPI/BIOS image from any system-specific data while maintaining any configuration settings applied by the OEM of the given model. It is not meant as a guide on how to completely transform a dumped Engine region into a stock Intel-provided one. This guide is relevant to those who need to clean the DATA section of an Engine (CSME, ME, CSTXE, TXE) Region, which is part of a dumped SPI/BIOS image, in order to flash the latter on a different machine of the same OEM model.
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