I want to change my ISP but the IDIRECT 3000 MODEM is remotely password. How can I remove it or change it? Somebody help.

the password can be unlocked easly, but unlocking the rlock command is difficult and impossible.
if you need help , then the only way is contacting your service provider to unlock it, or buy new modem which should be unlocked.

Regards,

Well i took to long typing my answer, so i'll recap in short.

force a redboot
uses its cli take control, and modify what you need. this will fix the console password.
if you want telnet and remote password changed.
find an opt file with a password you know works, then copy this block into your current opt file that is passworded.

[SECURITY]
     password = @#kjhkj323234

save and reload.
If you can get the opt file cause the modem is locked. after utilizing redboot, navigate to the falcon.opt file and modify from there and after you save the file, reboot and you should be good.

Perform the following steps to recover the root password for the iNFINITI series:

1. Connect a PC to the modem via the console port. You can use Hyper Terminal or Tera-Term for this operation.
2. Reboot the iNFINITI NetModem.
The message DRAM Test Successful displays.
3. Press the Spacebar 3 - 4 times.
The Redboot> prompt displays.
4. Enter the command:
fis load Linux
The Redboot> prompt re-displays.
5. Enter the command:
exec -c “root=/dev/mtdblock2 console=ttyS1,9600 single”
The /# prompt displays. This indicates that you logged in without a
password.
6. Enter the command:
passwd
You are then prompted to enter a new password.
7. Enter a new password.
8. When prompted, type the new password again to confirm.
9. Once you are successfully logged in, reset the iNFINITI remote. You can now log into the iNFINITI remote.