Help me to update the latest version my iPad

Whether you are able to update your iPad to a newer version of iOS/iPadOS will be dictated by your iPad model - and the currently installed version of iOS. You can find this information here:

Settings > General > About

Not sure which iPad you have? Identify your iPad model.

Here is a list of the highest version of iOS supported by the older models of iPad (for simplicity - “generations” are shortened to a number) that are restricted in their ability to be updated:

iPad1 - iOS 5.1.1

iPad2, iPad3 and iPad mini1 - iOS 9.3.5 (WiFi Only models), iOS 9.3.6 (WiFi & Cellular)

iPad4 - iOS 10.3.3 (WiFi Only), iOS 10.3.4 (WiFi & Cellular)

iPad Air1, iPad mini2 and iPad mini3 - iOS 12.5

Newer models, not appearing in this list, are all able to be updated to the current version, iPadOS 14.3.

If your iPad is capable of update to a more recent version of iOS /iPadOS than is currently installed, this support page details the methods by which your iPad can be updated. You would note the if your iPad is too far behind, it may be necessary to use a PC (with iTunes installed) or a Mac computer (with iTunes or Finder - as appropriate for the installed version of macOS):

Update your iPhone, iPad or iPod touch – Apple Support

Here are my questions.

What year and model iPad do you have/own?

What iOS/iPadOS version is this iPad,currently, running?

What is the rated, internal data storage model of your iPad and how much of this internal data stirage is left inside of your iPad model?