How to resolve USB update errors on Kant TVs

Fix USB error messages during firmware updates on Samsung Kant-SU2 and Kant-S2 TVs. Learn how to safely complete updates, avoid main board damage, and ensure proper reboot sequences.

Encountering USB error messages while updating your Samsung Kant-SU2 or Kant-S2 TV? This issue often occurs due to interruptions during the firmware update process, such as removing the USB drive or cutting power prematurely. Follow these steps to resolve the error and complete the update successfully.

1. Why does a USB error occur during firmware updates?

USB errors typically happen when the update process is interrupted before completion. This can occur if:

- The USB memory stick is removed before the second reboot completes.

- The TV's power is turned off or unplugged during the update.

- The TV is manually shut down before the firmware installation finishes.

Interrupting the update can lead to firmware corruption or, in severe cases, main board failure, which is not covered under Samsung's warranty.

2. How to fix a USB error during a firmware update?

If a USB error icon appears after interrupting the update, follow these steps to resolve it:

1. Ensure the USB memory stick contains the latest firmware file downloaded from Samsung.com.
2. Reinsert the USB drive into the TV's USB port.
3. Allow the TV to continue the update process automatically. The error should resolve once the update completes.

3. What is the correct firmware update process for Kant-SU2 and Kant-S2 TVs?

Follow these steps to ensure a successful update:

1. Turn on the TV.
2. Select "FW Update" via USB or OTN (Online Network).
3. Wait for the first reboot, which displays the TV logo briefly.
4. Observe the progress bar (takes 30–60 seconds).
5. Allow a second reboot to occur.
6. Once the TV restarts normally, the update is complete.

For automatic updates, the process is simpler: Turn on the TV, allow it to reboot, and wait for the update to finish.

4. How to verify the TV's software version after the update?

To confirm the firmware update was successful:

1. Go to the TV's settings menu.
2. Select "About TV."
3. Check the software version displayed. Versions starting with "T-KTS2" indicate Kant-S2 models, while "T-KTSU2" indicates Kant-SU2 models.

5. Supported Samsung TV models

This troubleshooting guide applies to 2020 Samsung TV models, specifically the Kant-SU2 and Kant-S2 series. Ensure your TV model matches before proceeding with the update.

6. Additional things to check

Before attempting another update, consider these factors:

- Verify the USB drive is formatted as FAT32 and contains the correct firmware file.

- Ensure the TV is connected to a stable power source to prevent interruptions.

- Check for any firmware updates directly through the TV's network settings if available.

7. When updates may not appear

Updates might not appear if:

- The TV is not connected to the internet or a stable Wi-Fi network.

- The USB drive is incompatible or improperly formatted.

- The firmware file on the USB drive is outdated or corrupted.

Related Samsung support topics

- How to download firmware updates for Samsung TVs

- How to format a USB drive for Samsung TV updates

- Troubleshooting Samsung TV update failures