A cable (commonly referred to as a printer cable).
Grundig Sonoclock 890A-Web fails reading the station list #137
Let us know in the comments which firmware version you're running, and we can help you find the right workaround! Archiv - Support und Downloads - Grundig Business Systems grundig sonoclock 890 web firmware update repack
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: Official firmware files are increasingly rare. Some archives for Grundig Business Systems exist, but they primarily cover digital dictation devices. For consumer audio, you may need to rely on community-maintained mirrors like the Internet Archive . Technical Troubleshooting A cable (commonly referred to as a printer cable)
Before attempting a repack:
Other threads confirm that the radio is still loved. In a FHEM home‑automation forum, a user revived an and tried to control it via UPnP, noting that the device runs a Frontier Silicon chipset. That chipset hint is valuable: if you cannot find the exact Grundig repack, firmware from other Frontier‑based radios (e.g., some Medion or SilverCrest models) might be compatible— but at your own risk . This link or copies made by others cannot be deleted
could check for firmware updates over the network. Today, the original over-the-air (OTA) update servers are permanently offline.