I’ve updated the software but it’s not installing saying that an error occur what do I do?

aroosha128 Said:

"I’ve updated the software but it’s not installing saying that an error occur what do I do?"

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Update Using a Computer:

Update this once more, this time, using a computer...Use my User Tip:  Update your iPhone Using a Computer - User Tip

To update over the air from the phone all of these requirements must be met:

• You need at least 6 GB of free storage
• You must be connected to a Wi-Fi network (and not a personal hotspot) unless it is an iPhone 12 or 13 series or an SE 3rd edition with an active 5G network connection
• The phone must be charged to at least 50%, and preferably plugged in so it stays above 50% during the update
• The phone must not be in Low Power Mode
• The phone must not be connected through VPN, and it may be necessary to delete any VPN apps and VPN profiles
• The phone cannot be in Airplane mode
• You cannot still have a beta version installed on the phone
• You cannot have a previous version that was downloaded, but not installed - go to Settings/General/iPhone Storage to look; if you find an iOS installer, delete it

If you can't meet all of them you can still update using your computer.

aroosha128 wrote:

No, it’s the iPhone 6s, not a 6. Please someone help me it's not installing I'm in urgent need

I believe you may be mistaken. Go to Settings/General/About. What does it say the Model Name is?

Or go to Settings/General/Software Update. What does it say?

If you're still on iOS 12 as your specs say, the you most likely have an iPhone 6, not a 6S and you won't be able to update beyond iOS 12.5.6.

Try restarting the phone. And then to the update again.