Knowledgebase

If a firmware update fails the SmartNode will enter the u-boot mode. Connect a computer to the console interface and restart the SmartNode. You will see the Prompt "=>".

How to force the SmartNode entering the bootloader/u-boot mode

While connected with your computer to the console interface, perform a restart of the SmartNode. The following will appear on the console
Hit any key to stop autoboot:
When doing so, the boot process will be aborted and the SmartNode remains in u-boot mode. 

• Download the required .bin file at

• Image for SN4660 and SN4670

• Image for SN4970, SN4980 and SN4990

1. Erase the potentially stored evironment variables from u-boot, to get the default behavior:

1. Set the IP of the SmartNode: setenv ipaddr <device ip address>
2. Set the netmask for the SmartNode: setenv netmask <device netmask>
3. Set the TFTP server IP: setenv serverip <tftp server ip address>
4. Specify the right folder of your TFTP server where the image file is located: setenv tftproot <path>
   The SmartNode will automatically select the image.bin 
5. Type in: run getimage
   wait for the image to be downloaded
   
6. Type in: reset

Now the SmartNode will perform a reboot. Afterwards it will boot up with the regular firmware.