upgrade idirect 3100 FW manualy

Hi, all
In order  to activate my idirect 3100 modem with my ISP, its needed to upgrade de software to 7.1.0. the NOC sent me the manual with all procedures, and winscpc plus the packages to install. but when send the command to increase the swap space it comes a message"unknown command" mount.

need help

its also says unknown command, when I type cd /tmp also when I type only cd
I typed help and it comes a list of all commands. but in these list there is not cd,  tmp or mount. I can see many commands on these list, except cd or tmp and mount.
what can be happening?
Thanks

Hi,
Problem solved.
1- I was not using the console cable
2- after connecting the cosole cable, I had to telnet to the modem, by lan card, tru the ip, admin/pswrd:XXXXXX and start the sshd and keep it running until the end of process, I mean until the modem reboots itself.(after loading the option file)
3- open winscpc and copy the cumulatice package 7.1.1 to the /tmp directory, and close connection with winscpc.
4- telnet from the hyper terminal, console with root/pswrd: iDirect, and start send the commands.
5- with isite load the remote pkg, and option file.
6-modem reboots after option file load
7-Done!
Thanks
David

(Moderator Note: I edited/blanked out your password)