iPhone 5 won't update to 10.3.4

An iPhone 5c isn't subject to the GPS issue patched in 10.3.4, so Apple never created a version compatible with them, and the requirement doesn't apply to them.

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I cant update my ios 10.3.4.. due to that my iphone changes the date to the year 2000. I cant even use my waze or maps in the phone. How to solve this issue?

Hi my iPhone 5 date and time are incorrect and it’s searching continually for the internet. I reads software update needed iOS 10.3.4. How do I solve this

You need to connect your iPhone to a computer running iTunes and do the update from a PC or Mac.

If you don't have iTunes, it's a free software you can download here: https://www.apple.com/itunes