I'm getting the same sometimes I get invalid platform ID I messed up my plat partition and loaders and i can still boot 2 emergency mode on my 635
I accidentally flashed Lumia 640. FFU file.
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My Lumia 640, did this, it got stuck on a reset protection screen. I hard reset. In connected to Wi-Fi and it prompted me to sign into my Microsoft account and I did get access to the phone. You can try that.
I know though on the site it say reset protection is off. Though thankfully with InteropTools i found a way to install it on my phone to bypass reset protection. Though it does not turn it off. And no way to make it reactivate on the site so I can get my recovery key to turn it off my phone. No thanks to the developer I hope he finds a way to turn off reset protection for lumia 950s if you can pass this along to him on his tweeter id appreciate it.