How do I update my iPad from on a Windows computer because it only gives examples from Macbooks.

You can use a Windows computer with iTunes installed.

Instructions here => Update your iPhone, iPad, or iPod touch - Apple Support

Note:

If you have iPad mini 1st generation, you cannot update past iOS 9.3.5/9.3.6 for cellular models

If you have iPad mini 2nd or 3rd generation, iOS 12.4.9 is the highest you can update to.

DJoers Said:

“How do I update my iPad from a Windows computer because it only gives examples from Macbooks.”

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On a PC, Update iPadOS Through iTunes:

1. Go Here: Update iPad - Apple Support
2. Scroll to: Update Using your Computer
3. As it Reads: “In the iTunes app on your Windows PC: Click the iPad button near the top left of the iTunes window, then click Summary.”