Raspberry Pi locks down RAM upgrades in Firmware

It's not just because of the RAM pricing situation.

Links mentioned in this video:

- Raspberry Pi EEPROM issue from Oct 2025: https://github.com/raspberrypi/rpi-eeprom/issues/761
- Raspberry Pi Forum Post: https://forums.raspberrypi.com/viewtopic.php?t=399212
- Hacker News discussion: https://news.ycombinator.com/item?id=49786689
- Geekworm guide for determining Factory RAM size: https://geekworm.com/blogs/news/prevent-ram-swapped-raspberry-pi-5-how-to-verify-factory-ram-size

And special thanks to a viewer for pointing this out via email in late April! I never got a satisfactory answer about this from Raspberry Pi, but they have some official responses on the forum now, so ¯\_(ツ)_/¯

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