Found a different cable.
Normal boot output:
Special NAND id table Version 1.36
Nand ID: 0xEF 0xF1 0x80 0x95 0x00 0x00 0x00 0x00
stmmac_init,550,0x70431,3
PHY not link!
get_update_state,266,55,ff
get_update_state,266,aa,ff
get_update_state,266,5a,ff
*** INFO *** dul-backup state: NORMAL BOOT...