Initrd not found or empty - disabling initrd MIPS: machine is MikroTik RouterBOARD 750Gr3 Also, to start a TFTP-boot (NetInst) you don't need to power-off the router: just set it to try a network boot and to always use the “backup boot”, and reboot. NOTE2 the RouterBOOT included in RouterOS 6.49.x has a ~7MiB limit for TFTP image size, and will reject too-large images if you attempt to TFTP-boot them. Upgrade from 18.06.1 to 19.07.0 is not supported. NOTE that before 19.07.0 release the router was non-natively supported in 18.06.1 release.

It's recommended to install the “Current Release” in the table above.įlashing OpenWrt using LuCI: Read the section Flash OpenWrt (“After successfully using a web browser to connect to the OpenWrt LuCI…”).įlashing OpenWrt using SSH (Linux) or PuTTy (Windows): Use UCI to flash OpenWrt with sysupgrade command. Open a browser and navigate to 192.168.1.1ĭepending on the chosen version (snapshot/old stable release/stable release) the firmware might contain LuCI. Unplug the ethernet cable from port 1 and plug it into port 2.ħ. Wait until the USR status led stops flashing. Keep holding until the first beep, then release it when you see activity in tinypxe.ĥ. To netboot: hold the RESet button while powering up the router. Plug the ethernet cable into port 1 of the router and tftp netboot.Ĥa. Uncheck the box in the “Boot File” section and select the initramfs-kernel.bin file for the router.Ĥ. You can also disable other interfaces like wifi, etc.ģb.

Restart tinypxe, then power off the router. If it's not, connect to the router and power it on normally. Make sure option 54 is the same ip as the static one just set. Change the static ip of the wired interface on your computer to 192.168.1.10ģ. If the installation fail, you might need to upgrade/downgrade to RouterOS 6.49.2, as reported inĢ. Follow MikroTik Common Procedures to install the OpenWrt firmware.

Mikrotik routerboard upgrade firmware