With sparsify you can of course create fiasco's but when you flash the binaries, you will note that the device defaults to Open Mode. There's no easy way to fool the flasher to revert the device into Closed Mode without Nokia-signed binaries.


I'd go a bit farther even. I am fairly sure the original signing keys were destroyed with rest of the build infrastructure when the production line was decomissioned. A pity, though. It would not have harmed anyone now later, if some of the more closely guarded stuff would have leaked out...