How to upgrade SONiC NOS to a newer version?

Pre-requisites

1. Make sure the Switch/ASIC Model is running a supported released version of SONiC
2. Contact the Aviz Networks Support Team to get the latest image for the specific Switch/ASIC model
3. Make sure the switch management port is connected and configured to the network
4. Upload/Copy the appropriate SONiC bin file to the source location, which is either:
   • Local SSD on Switch or
   • TFTP Server or
   • HTTP Server

Upgrade Procedure

• Check the Installed SONiC version

admin@sonic:~$ sudo sonic_installer list
Warning: 'sonic_installer' command is deprecated and will be removed in the future
Please use 'sonic-installer' instead
Current: ACS-TD3-SONiC_202106_001
Next: ACS-TD3-SONiC_202106_001
Available:
ACS-TD3-SONiC_202106_001

• Upgrade the image from either
  • Remote TFTP/HTTP Server

admin@sonic:~$ sudo sonic_installer install tftp://10.241.107.1/ACS-TD3-SONiC_202106_002.bin -y

• • Local Copy

admin@sonic:~$ sudo sonic_installer ./ACS-TD3-SONiC_202106_002.bin -y

• Check the Images after the installation is complete

admin@sonic:~$ sudo sonic_installer list
Warning: 'sonic_installer' command is deprecated and will be removed in the future
Please use 'sonic-installer' instead
Current: ACS-TD3-SONiC_202106_001
Next: ACS-TD3-SONiC_202106_001
Available:
ACS-TD3-SONiC_202106_001
ACS-TD3-SONiC_202106_002

• Specify the startup image to the correct version - i.e. change the next boot-up image

admin@sonic:~$ sudo sonic_installer set_default ACS-TD3-SONiC_202106_002
Command: grub-set-default --boot-directory=/host 1

• Check the status of the Images

admin@sonic:~$ sudo sonic_installer list
Current: ACS-TD3-SONiC_202106_001
Next: ACS-TD3-SONiC_202106_002
Available: 
ACS-TD3-SONiC_202106_001
ACS-TD3-SONiC_202106_002

• Reboot Switch and verify if it has loaded with new version

admin@sonic:~$ sudo sonic_installer list
Current: ACS-TD3-SONiC_202106_002
Next: ACS-TD3-SONiC_202106_002
Available: 
ACS-TD3-SONiC_202106_001
ACS-TD3-SONiC_202106_002

• Remove old images

admin@sonic:~$ sudo sonic-installer remove ACS-TD3-SONiC_202106_001 -y
Updating GRUB...
Done
Removing image root filesystem...
Done
Command: grub-set-default --boot-directory=/host 0
 
Image removed