Cannot get update channel #10514 (SL1)

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What happened?

The printer displaying the message: Cannot get the update channel, please restart the printer and try again.

Error name: Cannot set update channel

Error code: #10514

This is related to update channels for stable or beta versions of the firmware. The user can choose between a stable and beta version of the firmware, in Settings -> Firmware. The printer cannot read the current configuration or update-source. Most probably the printer configuration is somehow broken. 

How to fix it?

Update to the latest stable firmware version and/or factory reset.

Guide

Firmware updating (SL1/SL1S)