can't update to 6.1 or 7

[Galaxy_Note9]

For some reason I can't update to 6.1 or oneui 7. I have been told that my z fold 3 might be a demo device but I can use the phone as normal. Can someone help PLEASEE!! 

[xSteveuk]

Hi
To disable demo mode on a mobile phone, you generally need to access the developer options within your phone's settings and then toggle off the "Demo Mode" setting. The exact steps can vary slightly depending on the phone's manufacturer and Android version, but generally involve navigating to settings, then developer options, and finally disabling the demo mode toggle

[Galaxy_Note9]

It says *demo mode not supported on this device**

[xSteveuk]

Here's a more detailed breakdown of potential issues and solutions:

1. Check Your Internet Connection:

A stable Wi-Fi connection is crucial for downloading updates. 

Ensure your device is connected to a reliable Wi-Fi network. 

You can't download updates while roaming or with a weak signal. 

2. Ensure Sufficient Storage Space:

Android updates require enough free space on your device. 

Check your storage settings and delete unnecessary files or apps if needed. 

You might need to free up several gigabytes for a major update. 

3. Battery Level:

Make sure your device is sufficiently charged to complete the update process.

Low battery prompts will usually appear if the update requires more power

[Tourbillon De La Vie]

Where did you get the phone from? Post a screenshot of the service provider software version under about phone/software information

[Galaxy_Note9]

I got the phone by a trade it was unlocked

[xSteveuk]

It's unlikely your Samsung phone is a demo phone if it won't update, but it's possible. Demo phones, often found in retail stores, have special software preventing updates and often reset themselves. If your phone isn't a demo, lack of updates could be due to insufficient storage, a poor internet connection, low battery, or incompatibility with the latest software. 

Here's a breakdown of potential reasons and troubleshooting steps:

1. Check for Demo Mode:

Factory Reset: Try a factory reset to see if the demo software automatically reinstalls. 

Retail Mode: If it's a demo phone, it might be stuck in a retail or demo mode, preventing updates and causing it to reset. 

2. General Software Update Issues:

Insufficient Storage: Ensure you have enough free space on your phone, as updates require space to download and install. 

Weak or No Wi-Fi: A stable Wi-Fi connection is crucial for software updates. 

Low Battery: Make sure your phone is sufficiently charged or connected to a charger during the update. 

Incompatible Device: Check if your phone model is compatible with the latest software version

[Tourbillon De La Vie]

O2 phone & probably firmware albeit unlocked. I suspect therein lies the issue, expecting an O2 issued firmware. Try maybe with O2 sim and or smart switch software. That's assuming O2 issued updates for that model