Also have a single Photon from a batch of around 30 units used so far (ie 3% failure rate) that is in the SOLID GREEN state.
Same issues as described in prior posts: solid green, but can enter flashing yellow DFU mode. Looks to have successfully downloaded firmware 0.4.3.rc2, but made no difference.
Cycling through the modes to flashing white (factory reset), but release at this point just returns to solid green.
Memory dump here:
https://drive.google.com/file/d/0BzdAC5rcyb9kbVJaaGdrOVhxZ28/view?usp=sharing
I will set this unit aside and report back when new firmware is release to see if this overcomes the issue. Will also report back if any others exhibit the problem.