Can I upgrade from ios 10.3.3 to 11?

it depends the version iPad that you have.

here is list of iPad models. Looks like you have iPad 4 th gen. It will not go higher than iOS 10.3.3.

I suggest You get a safe browser- such as Dolphin for security. Is available in the App Store.

Download Dolphin Free Mobile Browsers For Android, iOS

Probley have to flash install ... it forces it to have mo chooce cuz u put system on it.. search it on ne

No. Depending on what model it is, it either can't be updated past 10.3.3, or can only be updated directly to 12.1; yours probably falls into the first category.

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