On September 22, 2026, the Raspberry Pi Foundation officially announced that its latest Compute Module incorporates a firmware-level mechanism to lock memory capacity, effectively preventing users from independently upgrading the memory. Even if higher-capacity memory chips are installed, the system will only recognize the factory-preset memory capacity during the boot process, rendering the extra memory inaccessible. This measure is designed to curb unauthorized hardware modifications and the circulation of counterfeit products. Previously, some vendors from unofficial channels would purchase low-specification development boards, replace the original memory with lower-cost chips, and resell them as high-specification models at inflated prices. This practice not only compromised the user experience but also strained engineering support resources.

The Compute Module 5 employs BGA packaging, with memory chips soldered directly onto the mainboard, eliminating standard memory slots. Replacing the memory requires specialized equipment and technical expertise. The new module's design has been further streamlined, with memory chips positioned close to the main SoC (System on Chip), while external expansion is facilitated through dedicated connectors, significantly raising the difficulty of physical modifications.

The firmware includes multi-layered verification logic that is compatible with memory products from various suppliers. Even if the replacement memory chips have identical specifications, any deviations in critical timing parameters may cause the system to halt the boot process.