The Apple Watch Series 4 (40mm, LTE) comes with a firmware identifier Watch4,3. It has a Board Configuration of N141sAP and a Board Platform of . The CPID and BDID are 32774 and 12 respectively.
IPSWDL.COM is a website that provides download links for IPSW files, which are used to install or restore firmware on Apple devices. These files are sourced directly from Apple's servers.