Heya… 
I bought two M1S hubs a while ago for the same household. While the first one was delivered with a firmware version 3.something … over time it auto updated fine and now is running the latest version as of today. The second M1S hub got installed later and is still on firmware version 3.3.8_0026.0013. Auto-Updates over night apparently not working. If I try to do it manually, it downloads until 95% then nothing for a while and then it ends with "Firmware update failed Unknown error(993021)”. I removed it from the home, did a factory reset, try to add it again and then run the update again… does not work.
How can I get the firmware updated? With the other hub it looked like it did two updates in a row… and then was on v4. This hub immediately tries to update to the latest available version and fails all the time. Any tipps appreciated, cheers…
@hermitation Heya! It sounds like you’re having quite the ordeal with your second Hub M1S. Here are a few things you might want to try, based on some common troubleshooting steps for firmware updates:
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Good Communication: Ensure that your hub has a strong connection with the network. Before trying another update, control the hub through the app to confirm everything is connected properly.
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Firmware Version: Double-check that both your app and hub are on the latest versions needed for updates. Sometimes, the app itself might need an update to handle new firmware correctly.
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Restart Devices: Restart both the hub and your router. This can sometimes clear out any network hiccups that might be causing issues.
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Alternative Network: If possible, try connecting the hub to another Wi-Fi network or create a hotspot with another device to see if the update goes through there.
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Re-enter the Network: Try re-adding the hub to your network and then attempt the update again. This can sometimes help when automatic updates aren’t functioning as expected.
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Customer Service: If these steps don’t resolve the issue, please contact Customer Service Team by the Aqara Home App (Profile>Help&Feedback>Customer Service) or scan the QR code:
, which will be efficient; If you don’t have an Aqara Home account, please click here to create a ticket.
I hope one of these tips helps get your hub up to date! Best of luck, and feel free to share any updates or further questions. Cheers!
