UEFI Install AIO

Hello. I come across many PCs with both x86 and x64 architectures.. So to save the hassle of downloading two ISOs.. I downloaded a Single AIO ISO from Kickass. So the thing is my cousin's laptop is a UEFI BIOS. So this AIO is over 4 GB making it unable to make bootable CD nor USB (FAT-32 issues) I googled and found that Windows 10 setup will not accept split install.wim. So I am here to ask that is there any other way to install the ISO?
I don;t want to download the update over and over again.. thats why I have downloaded the ISO.
(Also: Can I use the product key of Windows 8 on Windows 10?)
Thank you!

Here is a much more legitimate way to do it:
Solved How to make 4 in 1 installation USB? - Windows 10 Forums

The 4gb FAT32 limit is for a single file and is no issue in creating an AIO USB Windows 10 flash drive.

the thing is.. I downloaded an AIO ISO. So what can I do? In anyway can I extract one version? like Home Single Language x64?

rohidroid said:

the thing is.. I downloaded an AIO ISO. So what can I do? In anyway can I extract one version? like Home Single Language x64?

You can use RUFUS to make a bootable USB from the ISO file. Make sure FAT32 is selected when using RUFUS.

Rufus - Create bootable USB drives the easy way

From the opening screenshot on the website, you will change the Partitions Scheme to what you want, and the file system to FAT32.

There is probably a RUFUS tutorial here on tenforums.
Like here maybe:
USB Flash Drive - Create to Install Windows 10 - Windows 10 Forums

DUDE!! FAT-32 doesn't support ISOs over 4GB.. Thats what I was asking?!.. Read the first post again maybe?!

rohidroid said:

DUDE!! FAT-32 doesn't support ISOs over 4GB.. Thats what I was asking?!.. Read the first post again maybe?!

Are you trying to copy the ISO file itself to a USB, or are you trying to make a USB by extracting the contents of an ISO to the USB?

Extracting the iso gives you the install.wim.. The largest file of an iso.. that is over 4gb.. which will make any software.. even rufus an error and tells you to put NTFS..

rohidroid said:

Extracting the iso gives you the install.wim.. The largest file of an iso.. that is over 4gb.. which will make any software.. even rufus an error and tells you to put NTFS..

K. So it seems whomever has created the AIO has merged several versions into one install.wim. You'll have to use imagex to extract the one you want, then put that back in the ISO to burn a USB from.

Also, back to your second original question; no, you can't use a Windows 8 key to install Windows 10 with. It has to be done as an in place upgrade from within the previous Operating System first. After you get an upgrade to Windows 10 that is activated, then you can do a clean install of Windows 10 on that same computer if you want - and you skip entering a product key when asked.

Oh.. Damn it.. The PC actually ran into a problem so I had to reinstall windows 8.. So I cannot do anything with the ISO? And what are the command lines for the images to extract only one version?