I am upgrading the FileMaker Pro server 16.0.1 server patch to 16.0.2 and above but it says a valid copy of FileMaker Pro 16.0.1 could not be found, I have stooped FileMaker server services and following all provided upgrade instruction, but it does not work for me, can anyone help me how to upgrade server 16.0.1 to new updater patch on Windows server 2012 R2
Sounds like you are using the Pro patch on Server:
Download the patch for Server instead.