Raspberry Pi Locks Down RAM Upgrades

In a recent video [Jeff Geerling] addresses an issue discovered with the Raspberry Pi firmware, specifically how since around 2024 the firmware locks down what RAM size and even module is supported. This isn’t an issue that is widely known, probably because most people just use the board as-is, but it can be an unpleasant surprise for those looking to upgrade or repair their Pi. Naturally there is a valid reason for wanting to prevent unscrupulous RAM module changes, with a [Geekworm] blog post