I think someone on here is way more full of themselves when it comes to understanding device security and DRM models than they should be.
How about this hypothetical… FormLabs could just decide to encrypt the entire contents of the chip and store a copy of the chip ID and checksum pair inside the printer as soon as you insert it. When a cartridge is loaded, the contents of the EEPROM is read and decrypted in the printer and the chip/internal table updated periodically. When a cartridge is first loaded that uses the old data spec, the printer converts it to the new spec and immediately writes the updated data back to eeprom then verifies it with an immediate read.
Failed write - fail the cartridge
Failed checksum comparison against internal - Fail the cartridge
Cartridge with old format that was previously converted - Fail the cartridge
No internet or cloud needed to lock you out and any attempt to manipulate the process results in a blacklisted cartridge that reports a fail. Oh, and since the new cartridges manufactured from that point forward utilize the fully encrypted spec, you are basically on a countdown timer until your “unstoppable” hack gets scrapped, perhaps at something like the resin shelf life cycle + 25% or so for good measure, thus killing your hack even if you do decide to go the route of spoofing the device IDs.
My point here is that the hubris of going on a manufacturer forum and telling folks that you have a plan for an unblockable hack while bashing someone for playing it (wisely) close to the vest is uncalled for and arrogant. All it serves to do is further motivate Formlabs to squash such efforts. The comparison of this to an old game console is about useless. Those platforms had no way to WRITE to the cartridges. The onewire device here is nothing more than a storage medium, so its not about the device at all in this case, its about managing the data format that is stored on it, and that is something Formlabs can most certainly change on the fly, so long as they maintain backwards compatibility for just long enough to allow previous generation cartridges to phase out.