My K20 pro is currently at firmware 12.5 and I'm trying to update to the latest version via the Updater app. I am able to download the firmware (12.11) but clicking on the YES button to start the update process doesn't work or is not responding. Im still able to go back to the previous screen so the phone isn't totally unresponsive. Manual selection of the firmware via the three dots has the same outcome. How can i fix this?
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