New MacBook Pro with M1: You can't upgrade the RAM - AfterDawn
M1 Mac RAM and SSD Upgrades Found to Be Possible After Purchase - MacRumors
What happens when you try to UPGRADE an M1 MacBook to M2? - YouTube
Is it okay to upgrade RAM on a new M1 MacBook Pro? - Quora
Finally upgraded from a 2015 15 inch Macbook Pro (16gb ram, amd m370x 2gb gpu, 512gb) to a 2021 16 inch (M1 Max, 64gb ram, 32 core, 1tb) : r/ macbookpro
How Much Memory Do You Need in an M1-Based Mac? - Mac Business Solutions - Apple Premier Partner