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Raspberry Pi 5 RAM Upgrades Blocked by Firmware Since 2024, Documentation Now Surfaces

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Hobbyists had long upgraded Raspberry Pi 5 memory by swapping the LPDDR4X chip, a practice that ended when bootloader EEPROM releases dated 2024-09-23 and later began rejecting memory that differs from factory provisioning. Boards with swapped chips now fail SDRAM initialisation and will not boot, signalled by eight flashes of the green ACT LED. Raspberry Pi Ltd, the trading company, says the restriction targets resellers who fitted larger chips to low-RAM boards and sold them as higher-capacity models. The behaviour was only publicly documented in September 2026 by Jeff Geerling, while the official changelog does not mention a memory check, and a 2025 forum issue offers the clearest evidence.

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