AFAIK you can disable watchdogs by flasher (disabling = not starting), but they still get activated later on because ubiboot starts kicking them. Once they start they can't be disabled until reboot and something has to kick them all the time (Mer uses DSME, and ubiboot has simple script to do so: https://talk.maemo.org/showpost.php?...8&postcount=20). It may be possible to disable them with flasher and to disable ubiboot from kicking them, but I never tried it myself.