Updating verizon firmware
This is a page dedicated to Galaxy S5 stock firmware.
This software update has been tested to optimize device performance, resolve known issues and apply the latest security patches.
Besides security fixes, your router manufacturer may have found a way to enhance your router’s overall performance, which is always a good thing.
If you don’t update your firmware then you won’t be able to take advantage of any speed boosting upgrades that your router manufacturer might release in an update.
To manually update your phone's towers, power off the device and remove the SIM card. Updating your Verizon phone programs the device with the preferred roaming list (PRL).
If this is done regularly, you will enjoy the best possible service with Verizon.