Swap ROM from another Nexus 10
Do you have to swap more than just the ROM to successfully upgrade a 16GB to a 32GB from another nexus 10?
You cannot just upgrade from a 16gb to 32gb. You have to find and solder the 32gb chips. The only way to do that is find an existing 32gb Nexus 10.
I can confirm that swapping out the 16gb Motherboard with a 32gb MotherBoard on the Nexus 10 will upgrade the 16gb to a 32gb. That's all that is needed.