That depends on what is happening at your TiVo.
You need to have the modified postcodezones file.
you should be able to successfully run ntpdate -b 129.6.15.29
and finally after forcing a daily call check the otclient.log for a line like:
Code:
Jun 1 17:00:39 (none) comm[155]: Setting clock. Command = "/bin/ntpdate -b 192.43.244.18 129.6.15.29 132.163.4.103"
Jun 1 17:00:39 (none) comm[155]: About to execute: /bin/ntpdate -b 192.43.244.18 129.6.15.29 132.163.4.103 2>&1
Jun 1 17:00:52 (none) comm[155]: Command succeeded
If all these are correct you should no longer need the line in cron.
Peter.