Out of date security

This is for Samsung S21 ultra. 

We are here to help you update your device to the latest software version, jtk2023.

We do understand how important it is to update your device. 

To view any available software updates for your device:

1. Go to Device Support.
2. Choose or change the device brand and model.
3. Select Device diagram.
4. Scroll to More Device Help and select Software updates if it’s there. You’ll only see it if there’s an update for the selected device.

Software updates on our website are only available for AT&T branded devices. Keep in mind:

• The update may not work if you brought your own device to AT&T.
• You can check with the original carrier or manufacturer for software updates.

Also, please let us know if you have an AT&T branded device and the make and model of your device, so we can take a closer look at what software is available for that specific model. 

We look forward to your response. 

Thank you fro visiting AT&T Community Forums!

Carlton, AT&T Community Specialist 

It is an unlocked device. I was receiving updates on the device through T-mobile but haven't received an update since switching to AT&T. I am honestly considering switching back to T-mobile because this is a work phone that needs up to date security to retain access to work systems per my company's policy. 

Hello jtk2023, we're here to help with your system update.

Sometimes your device may have trouble updating. Here are some common reasons and fixes.

Memory issues

Each update requires a certain amount of data.

• You may have to remove apps or data to increase your device’s available memory.
• You can back up your data before deleting it.

Network connections

Software updates are done over Wi-Fi, so they don't affect your data use. Make sure you’re:

• Located in the U.S. and on our wireless network.
• Able to connect to a strong Wi-Fi signal.

Battery strength

• Make sure your device has at least 80% battery power.
• Connect the device to a charger before doing the software update.

AT&T branded device

Software updates on our website are only available for AT&T branded devices. Keep in mind:

• The update may not work if you brought your own device to AT&T.
• You can check with the original carrier or manufacturer for software updates.

Let us know if this helps

Thank you for visiting AT&T Community Forums!

Carlton, AT&T Community Specialist 

I brought my own device to AT&T. The other factors are not an issue. I need a solution for a non branded device. 

Hello there, jtk2023. We understand you would like to update your non-branded device, we'll be happy to point you to the right direction as we know how important it is to get the latest updates on your device.

Kindly note that your device must be an AT&T branded device to receive updates from us, we recommend you reach out to the original carrier or manufacturer for software updates.

Thank you for reaching out to the AT&T Community!

Rasheedat, AT&T Community Specialist

Or I could go back to T-mobile since they are capable of doing updates. 

Did your phone switch to a Att boot splash or does it still have a TMobile boot splash?

It has an AT&T one.

Than it should update.  But Att is usually 1 month behind