I would imagine you would damage the motherboard by even attempting to remove it and re-soldering would be impossible because it is done through a complicated manufacturing process.
I have upgraded Intel Core 2 processors on laptops. They use pins similar to a desktop socket however the mobile socket is different so you simply couldn’t buy a standard processor that you would use for a home build and cram it into a laptop if that was the idea you were getting.
Have you found a place that you can buy a compatible upgrade? If you can’t find them then it probably isn’t a viable upgrade.