Mac users get PwnageTool from the iPhone Dev Team, but Windows users... not so lucky. Introducing sn0wbreeze, an XPwn-based tool that makes custom IPSWs on Windows!
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi