In this video we will clean up the solder points, solder in the ribbon cable, and install the PicoFly clone modchip into this V2 Switch. For this you will need a reasonable soldering iron ($12 or a super high end one that will last you forever)
https://amzn.to/3GJd0oG
a digital microscope (amazon for ~$70-90) I got the Tomlov, but they all seem about the same at that pricepoint. Note that I tried a 5" screen first and it wasn't as easy for me...(although you can connect to a PC and have a full screen with either, so its up to you.)
https://amzn.to/3Sq8q3Y
Link to a perfectly capable $13 soldering iron: https://amzn.to/3SPbh80
good quality flux in a syringe ($7) You'll only need one, and it'll last you a lifetime, no need to overbuy
https://amzn.to/48nTpWx
and a glass of whiskey to calm your old man shaky hands down ($2).