root::0:0:root:/root:/bin/sh (An empty password field means no password required.)
Hit any key to stop autoboot: 3 Press Ctrl+C repeatedly. You should see a => prompt. At the U-Boot prompt, enter: 7004t-lm-v3 password reset
Save and exit. Then unmount:
umount /mnt Type reboot -f . When the system restarts, log in as root with no password . Immediately set a new password: Then unmount: umount /mnt Type reboot -f
Remember: The 7004t-lm-v3 is built for industrial reliability. Password recovery is a deliberate process – one that requires physical presence and serial access by design. Keep a console cable in your toolkit, and you will never be permanently locked out. Check the official support forum for the 7004t-lm-v3 or contact the OEM’s technical support with your unit’s serial number and firmware build date. Password recovery is a deliberate process – one