How to Recover MikroTik Router RB750Gr3 from Failed Firmware Upgrade Using Netinstall

MikroTik routers are known for their reliability and performance, but sometimes things can go wrong, especially during firmware upgrades. If your MikroTik RB750Gr3 router has experienced a failed firmware upgrade, you can use the Netinstall tool to recover it. Netinstall is a Windows utility provided by MikroTik that allows you to reinstall the router’s firmware over the network. Here’s how you can use Netinstall to recover your MikroTik RB750Gr3 router.

Prerequisites:

  1. Netinstall Utility: Download and install the Netinstall netinstall64-6.49.11.zip utility from the MikroTik website (https://mikrotik.com/download/archive).
  2. Firmware Image: Download the correct firmware image for your MikroTik RB750Gr3 router from the MikroTik website.                                                      I used   routeros-mipsbe-6.49.11.npk  from MikroTik website (https://mikrotik.com/download/archive).Note :- Its recommended use the same version of Netinstall utility as firmware.
  3. Ethernet Cable: Ensure you have an Ethernet cable to connect your computer to the router Ethernet port Ether1 or WAN port.
  4. Power Adapter: Make sure your router is connected to a power source.
  5. PC IP Address : Configure your PC LAN IP address as 192.168.88.2 /24  and Netinstall Netboot IP address 192.168.88.3.

Steps to Recover MikroTik Router RB750Gr3:

  1. Prepare Your Computer:
    • Disable any firewall or antivirus software on your computer.
    • Connect your computer to the MikroTik router using an Ethernet cable with router EthernetPort 1.
    • Disable all network adapter except the port which is connected to router very important.
  2. Open Netinstall:
    • Open the Netinstall utility on your computer.
  3. Configure Netinstall:
    • Click on the “Net booting” tab in Netinstall.Mikrotik Netinstall
    • Give the IP address .
    • netboot ip
    • Click OK
  4. Connect Router:
    • Power off your MikroTik router.
    • Press and hold the “Reset” button on the back of the router.
    • While holding the “Reset” button, power on the router.
    • Continue holding the “Reset” button until the Netinstall utility detects the router.
  5. Reinstall Firmware:
    • Once Netinstall detects the router, release the “Reset” button.
    • Click on the “Install” button in Netinstall to reinstall the firmware on the router.
    • Wait for the firmware installation process to complete. This may take a few minutes.
  6. Reboot Router:
    • After the firmware installation is complete, the router will reboot automatically.
    • Wait for the router to fully boot up and then check if it is functioning normally.
  7. Restore Configuration:
    • If your router was previously configured, you may need to restore the configuration from a backup file.

Conclusion:

Using the Netinstall utility, you can easily recover a MikroTik RB750Gr3 router from a failed firmware upgrade. It’s important to follow the steps carefully and ensure that you have the correct firmware image for your router model. If you encounter any issues during the recovery process, you can seek help from the MikroTik support forums or contact MikroTik support directly.

 

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