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  How do I factory reset a Siemens Gigaset A580IP / C475IP / S685IP
  To remove all settings from the phone (It will revert back to DHCP and a default pin of 0000).   Remove the ...
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  How do I upgrade the firmware on a Cisco/Sipura SPA942/SPA962/etc using TFTP?
  You will need a TFP server to update the firmware. Obtain the latest firmware for your device from Cisco Support. Extract the ...