I have updated my Atcom IP04 image up to V4 (uImage_V4.0 from the Atcom website). I used the serial connection and followed the instructions from the Atcom IPPBX Upgrade Manual and everything seemed to work OK. The device booted, but I can't login with root. I tried all the passwords... atcombox, uClinux, 12xerXes06, 12xerXes16 but it keeps coming back with "Login incorrect". What am I missing?