how can i update my ipad model a1458 serial:dm*****182 without a laptop?
I believe it's a 4th generation.
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Your iPad 4 model can be upgraded/updated to iOS 10.3.3.
Use the over-the-air, Wifi iOS Software Update feature, found in the Settings app, on your iPad to download, then install the iOS 10.3.3 upgrade.
Make sure you have a good and strong local/home WiFi network for doing this upgrade.
Good Luck to You!