Keep restarting

[Stefan]

The first possible cause that came to my mind was a stuck power button. Please try the following:

How to bring my FP1 back to life? (Power button stuck)

To find out, if the power button is stuck, only push the volume button and do not push the power button. If my theory is right, there is a possibility that the FP still goes into #dic:recoverymode . (You have to be quick however after putting in the battery, since the buttons ought to be pushed simultaneously.)