I was struggling with it a bit. The instructions missed that I have to press the Menu button one more time while in the menu to find Restart. After that, the diagnostics booted up. However, I couldn't do the last step with the left button; it always went back to the diagnostics. So I re-copied the files, waited, and then it miraculously worked, and the Jailbreak screen popped up. Thank you for your work.
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