The SparkFun RTK EVK runs on universal firmware created by SparkFun called RTK Everywhere. You can find its source through the RTK Everywhere GitHub repo.
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| Screenshot Firmware through Serial Terminal |
Make sure to check out the Quick Start Guide for the RTK EVK for a summary of how to get it connected over Bluetooth. You will also find more information about navigating through the configuration menu, updating firmware, and more in the product manual!