Original topic:

System update error 400

(Topic created: 09-27-2022 06:33 AM)
Galaxy S21


I bought a brand new s21 plus, and I wasn't able to update the system, and my Samsung members have been working now its giving server error 400

Any help

I tried soft and hard reset VPN safe mode

1 Reply
Community Manager
Community Manager
Galaxy S21

A software update is one of the best things you receive on your device. It offers new features to your smartphone, patches vulnerabilities, fixes bugs, and more. So let’s get this situated for you as soon as we can. There are a few things we can try to your device updated.


Check Internet Connection
Disable VPN
Update the device from a PC using Smart Switch
Perform a soft reset
Wipe Cache Partition

   Switch off the device.
   Hold the Volume High Key and Bixby Button, then press the Power Button.
   When the Android symbol appears, let out all keys.
   Hold the Volume Low Button multiple times to feature Wipe Cache Partition.
   Hold the Power Button to select.
   Hold the Volume Low Button to feature YES, then hold the Power Button to select.
   After completion of the Wipe Cache Partition, Reboot System Now will feature.
   Hold the Power Button to restart the phone.
   Afterward, select YES with the help of the Power Button.
  Then select “Reboot System Now” using the Power Button.
Factory Reset


To correct errors in the Samsung Members app, I recommend reviewing this link:


Please read the link in its entirety to reap the full benefit of the troubleshooting.


If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case-by-case basis, please provide the full model code and the IMEI number of the device as well as your best contact phone number, name, and email. 


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If your unit is out of warranty and you would like to receive quotes on service/labor from an Authorized Service Center near you, please visit: