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In this case, you computer manufacturers determine if the processor can be upgrade or not in your system and what processor is compatible.
Even though you motherboard has the same socket for this processor, the BIOS needs to be compatible as well, now, if this processor is soldered down to the motherboard you take the risk to damage the system and to leave completely useless. Laptops are far more picky than desktop PCs about such upgrades and depend on a couple of factors: whether the CPU is fixed to the chipset with adhesive or had the pin welded to the socket, and whether it's accessible and can therefore be removed and replaced.
Laptops are created on special frames that ensure all parts fit snugly and correctly each time one is created. Manually opening up a laptop and doing anything more technical than swapping hard drives or adding more RAM isn't the easiest of processes and will almost certainly invalidate your warranty.