I doubt many are doing this upgrade, and I think its awesome someone has the tooling & skill to do so. I cannot fathom how this is a threat to RPI. I would assume a community firmware patch will likely release & resolve the limitation (until it becomes a signed binary)
It also has nothing to do with going public, it is consistent with what they were always doing: it never was fully open, in fact quite the opposite and they were always protective about their HW, you can't even order the SoC as a separate chip, only as a part of premade/customized board.
It's already a signed binary, with rollback protection. (According to Reddit comments; I stopped using Raspis a long time ago)
> there may be a minor financial gain in buying a part with say a 2GB part, swapping it for an 8GB part of dubious origin, and reselling it as an 8GB device. However, this brings an element of risk to the user - the board hasn't been tested by us - and is a potential support burden for us, with customers complaining of unreliable devices. We therefore remove the commercial incentive by locking devices to their original RAM size.
Frankly, that sounds pretty reasonable to me
It's not though.
"Potential" is just that, potential. They're not claiming any actual harm to them about this. It's akin to saying, potentially terrorists could upgrade 1 GB chips for missiles.
There also just isn't a support burden for them.
If I buy a 2 GB RasPi5 and upgraded it into an 8 GB RaspPi5 and then _you buy it from me_ and it does not work. You cannot mail it to the RasPi Foundation and ask for a refund. They will tell you that they don't sell directly to consumers and to contact whomever you bought the device from for the refund.
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I'm fine taking the contrarian opinion that RasPi can lock down their products if they want. But a spade is a spade. It's not about "Potential support burden". It's about the realized profitability of a 8 GB unit over a 2 GB unit.
If they want to reduce the support burden they can use serial numbers to track what board has what ram - if they don’t match no support because it’s modified hardware.
Therefore I agree with manufacturer's decision.