AboutThis article demonstrates step-by-step instructions for How to Upgrade the Firmware on Cisco SPA525G.
Step-by-Step InstructionsThe below table will detail the steps required to accomplish your goals:
Access Phones Web Interface
First, access your phones web interface and click Firmware Upgrade as shown in Exhibit 1a. Note, that before upgrading you will need to download the latest version IP phone firmware file from the Cisco website. Once you download and extract the file, click Firmware Upgrade Window as shown in Exhibit 1b.
Locate the Device IP Address
Now, click Choose File to find the firmware upgrade file you just downloaded and extracted as shown in Exhibit 2a and locate and select .bin file as shown in Exhibit 2b. Then click Submit.
Upon completion, you will see the message Firmware Upgrade Successful as shown in Exhibit 3 and you are done!