Download Tera Term Pro v3.1.3 from here http://www.ayera.com/teraterm/
Telnet in to your TiVo (192.168.1.38) default port. username is blank, password is probably oztivo if required
at the prompt type (press Enter after each line)
cd /etc
rw
joe oztivo.conf
change the line port=80 to port=9090. Hit Cntrl+k then x
joe sysinit.conf
change the line use_emuproxy=YES to use_emuproxy=NO. Hit Cntrl+k then x
if sysinit.conf is empty you to exit Joe and type cp ./default.sysinit.conf ./sysinit.conf then edit sysinit.conf as above.
ro
reboot
that should be it.