If you need to perform a manual update to a specific version like 1.26 or higher, follow these procedural steps:
To ensure your radio stays current without manual intervention: Grundig Sonoclock 890 WEB Manual - ManualsLib If you need to perform a manual update
Press and hold specific buttons on the device (refer to your specific model's manual for the exact button combination) while plugging the power back in. The display should show . If you need to perform a manual update
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