2017-01-12 ZEN Unit N running RB bootloader+app 45697a0bf-161212

After RB logo, shows data abort e.g.

Data abort at 6002C7C0
FSR 0x1
(domain 0, fault 1)
address 0x75ED5699
pc:6002C7C0 sp:600C2818
    A: 6002CDE4
    [...]

Data abort at 6002D22C
FSR 0x1
(domain 0, fault 1)
address 0x62E7438F
pc:6002D22C sp:600C2998
    A: 6002D350
    [...]