Don't attempt replacing soldered RAM yourself.

It’s not a matter of effort — it’s a matter of specialized equipment and skill that most people don’t have. Soldered RAM isn’t socketed; it’s literally fused to the motherboard with tiny balls of solder under each chip. To replace it, you need to desolder the old chip (usually with a hot air rework station), clean the pads, apply fresh solder balls (reballing), place the new chip precisely, and reflow it. One slip and you’ve destroyed the board.

Even experienced electronics repair people mess this up. The tools alone (hot air station, stencil, solder paste, microscope) cost more than a new laptop. And that’s assuming you can even source the correct RAM chip — most aren’t sold to consumers. I’ve seen repair shops charge $200+ for this service, and even then they don’t guarantee it because motherboards vary.

If you absolutely must replace soldered RAM, you’re better off paying a pro who does microsoldering for a living. But honestly? Buy a device with socketed RAM next time. Future you will thank you.