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Installing OpenWRT/ROOter on a RBM33G/RBM11G

0. WARNING: Backup your MikroTik License key in case you ever want to go back to RouterOS.

  1. Download the latest

  2. Extract all of the above to: C:\Users\Public\Downloads

  3. Setup Network Interface connected to RBM33G/RMB11G POE port:

    • IP: 192.168.1.2
    • Mask: 255.255.255.0
    • Gateway: 192.168.1.1
    • DNS1: 192.168.1.1

  4. Disable Windows Firewall

    • From an administrator command prompt:
    • NetSh Advfirewall set allprofiles state off

  5. Configure and start tftpd32/64

    • Option 1: Overwrite tftpd32.ini with this one and start tftpd64.
    • Change the BootFile name if needed.

    • Option 2: Use screenshots for the settings, restart tftpd64 after you make your changes

  6. If you do not have a serial cable (Null Modem DB9 for the RBM33G, TX/RX/GND TTL for the RBM11G):

    • Plug in/powercycle your router, holding the reset button for 20 seconds. This will booth the router in Network Boot mode.
    • After 60 seconds, proceed to step 11, also skip step 15.
  7. Open Putty to the COM port of your USB to Serial Adapter with a baud rate of 115200

  8. Plug in/powercycle your router, press any key within 2 seconds to enter setup.

  9. Boot from the network by pressing the following key sequence:

    • o - boot options
    • e - ethernet
    • o - boot options
    • b - boot

  10. Wait for boot to complete (~45 seconds)

  11. Go to http://192.168.1.1/cgi-bin/luci/admin/system/flashops and sign in

  12. Browse to openwrt-RBM33G-GO2018-08-15-upgrade.bin

  13. Click Flash Image, continue.

  14. Re-Enable Windows Firewall

    • From an administrator command prompt:
    • NetSh Advfirewall set allprofiles state on

  15. Wait for router to finish rebooting, re-enter setup, and reset to default boot options by pressing r.

  16. Done. Reset your Windows Network IP settings.

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