It sounds like they probably did what everyone refers to as the modem dance.
Just in case anyone else runs into this ... after flashing kernel 4 my phone would boot up to the Serendipity screen with the green animated bar then shutdown.
I just did a battery pull & rebooted about 3 times before it finally booted all the wa...
People should also click the "submit to portal" button on the top right of the tread too. We should get your name out there for everyone to see.
Submitted. The work is pretty impressive...