I have made a new React/Webassembly version of the Online Patch Tool, which mean it works in modern browsers.
Ta-da, Merry Christmas.
http://simeonpilgrim.com/nikon-patch-test/index.html
Anyways it fully works as far as I am concerned. I have patched D300, D810 firmware and a few others and they come out 100% the same as the old patch tool. So really I guess the tool needs some people to play with it and to make sure it's not crazy unusable.
To that end the code is at: https://github.com/simeonpilgrim/nikon- ... n-Patch-JS
I will accept pull requests/patches that make it less ugly etc etc.
I am keen to hear if it works for people (especially if you apply the same patch via the old tool tool and can check the files are the same) or where it doesn't work etc.
On this thread I will delete any and all posts asking for firmware patches, I want this just to be about the tool.