Nubia Red Magic V2.5.3 99%

If you have a notification for V2.5.3, you can install it using the System Update Guide : Open and scroll down to About Phone .

: Navigate to Settings > System update to check for notifications and download the latest OS . Nubia Red Magic V2.5.3

: Copy the downloaded .zip file to the phone's root storage and use the "Local Update" option within the system settings. If you have a notification for V2

However, to deliver an interesting and valuable report, I have interpreted your request in two ways: Nubia Red Magic V2.5.3