An upgrade on the ISW series switches is a two-step process, with an intermediate upgrade image. The intermediate image is the file that contains a 'C' in the file name.
For example, for version 01.01.01.0005 (assuming a 12 port switch), the intermediate image is ISW-TLN-12PORT_V01.01.01.C005.dat. The final image is ISW-TLN-12PORT_V01.01.01.0005.dat.
- Download both the final image and the intermediate image from the support portal.
- In the web GUI, navigate to Maintenance > Software > Upload.
- On the upload page, select the file from your PC, then click 'Upload'.
- Wait for the switch to upgrade and reboot.
- Once the switch reboot, repeat steps 2-4 with the final image.