The below solution is NOT for the faint of heart, but you asked so I'm answering. This is the procedure I use to successfully get the newest HD630 graphics drivers (which are Win10 only) working within W7 on my system.
Download the ZIP file for the latest Intel wireless driver set for W7x64, which as you know works with the older intel drivers such as the 8265, yet excludes the 9260 since it is a W7 package. The "Drivers for IT Admins" page has it....
Download Intel® PROSet/Wireless Software and Drivers for IT Admins
(WiFi_20.60.0_Driver64_Win7.zip)
after downloading, extract the contents of the zip file to a folder on your desktop.
find the file named netsw04.inf. This is the setup file which contains a script which will install the wireless driver onto various wireless adapters. The reason you cannot install this driver on a 9260 within w7x64 is because the specific "vendor and device ID" of the 9260 does NOT appear within this file, so we need to remedy that.
Open this file using notepad. Go down one page and find the "excludefromselect" section, then go down another 5 pages or so and find the "Device WIN7_64". Within each section you will see several dozen vendor/device IDs listed. You just need to modify a single line within each of these two sections in order to authorize your specific 9260 for installation. For instance, my system has an 8265 and its vendor/device ID is
PCI\VEN_8086&DEV_24FD&SUBSYS_10108086
which if you search, you will see is listed in both the Excludefromselect section, and in the WIN7_64 sections.
Now go into your control panel > device manager and right click on your 9260 wireless adapter. It may be listed as an Unknown Device at the bottom, or it may be in the network section. You may need to hunt around for it, but you know you've found it when you find a device with the DEV_2526 string as described below. Right click on the adapter's line, then select Properties, then Details, then under the word Property select Hardware IDs from the drop-down menu. At this point you will see 4 lines of data underneath. Right click the second line and then select copy. It will look something like this
PCI\VEN_8086&DEV_2526&SUBSYS_10108086
(though the SUBSYS part may be different)
Now go back to the netsw04.inf file and find the two lines we were at earlier, the lines that contain the string for the 8265, which have the string
PCI\VEN_8086&DEV_24FD&SUBSYS_10108086
in them.
Overwrite them so that instead of saying
PCI\VEN_8086&DEV_24FD&SUBSYS_10108086, they now say
PCI\VEN_8086&DEV_2526&SUBSYS_xxxxxxxx (I put x's there because I don't know what your specific SUBSYS numbers are).
Save the file. The script is now set up to allow this driver to install onto your 9260 even though you are running W7.
After saving it, right click on the file and select install. The script will check to see that you are running W7_64, which you are, then it will check to see if you have a 9260, which you do, and it will install the driver. Hopefully