How can I download and install iOS 15.02

• If you have an iPhone 5S or 6/6plus, the highest you can update to is 12.5.5

• If you have an iPhone 6S or newer, you can update to 15.0.2

Go to Settings > General > Software Update.

Update your iPhone, iPad, or iPod touch -

https://support.apple.com/en-us/HT204204

Please call me to help me to download & install ios 15.02 to my iphone 6+ using my desktop computer.