The people behind the "kingsener" YT channel have been doing these types of upgrades for a long time.
He recently posted an upgrade of this same process as a short - https://m.youtube.com/shorts/b-Z5GhYhbjM
It’s wild to see how much Apple invests in making these as hostile to the user to upgrade. But also cool to see people out there with the skills to desolder the chips, memory, and storage and replace with a much faster alternative.
If Apple truly cared about their carbon footprint, devices would be easily serviceable and upgradeable by user
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