Ensure that access is not blocked to the device. Preferable steps for Netinstall to work:

  1. Directly connect the Ethernet port of the device to the PC.
  2. Both devices are on the same subnet.
  3. Disable the Windows/Linux firewall.
  4. Disable any antivirus programs.
  5. Make sure you press the reset button correctly to bring the device to the Netinstall state.

No success? Other things to try:
  1. Disable all other interfaces on the PC leaving only the one connected to the device;
  2. Run netinstall.exe as administrator;
  3. Make sure the connection in Windows is set to Private;
  4. A fixed IP address;
  5. Win7 set compatibility mode for netinstall.exe to XPSP3;
  6. Try different Ethernet cables;
  7. Set parameter: System > Routerboard > Settings >Boot Device "try-ethernet-once-then-nand;
  8. Enable NetBIOS over TCP/IP.
  9. Having the device connected through a switch to the computer, in rare cases, can help to bypass hardware incompatibility. Netinstall uses bootp packets, which use the same port numbers as DHCP packets. If you're using a switch between your PC and the device to be Netinstalled, ensure that the ports in the bridge are not blocked by other network devices. If you have dhcp-snooping enabled, make sure to enable "trusted" on the bridge ports facing the Netinstall PC.

Issue: After clicking the Install button, the status shows "ready" without performing the reinstallation process.

Solution: Restart the Netinstall application, if not helping restart your PC.

Issue: After pressing the reset button on the device and powering it on, the device is not showing up on Netinstall.

Solution: Press the reset button right after delivering power to the device. In this case, the backup bootloader will not be forced - in case it's damaged.