You can restore drivers one-by-one via the device manager, yes.
Though if you are looking to force install all the original drivers, you’ll need double driver.
Instructions:
((Make sure you have extracted the .7z contents to a folder location before starting))
Step 1 - Open Double Driver (as Admin)
Step 2 - Select “Restore” from the top navigation bar
Step 3 - Press “Locate Backup” in the bottom left and select “Other location”
Step 4 - Navigate to the extracted .7z location - Select the main folder and hit okay
Step 5 - Click okay
Step 6 - From the top navigation bar; click the “Select” option and from the dropdown choose “All”
Step 7 - All items should be selected (tick mark in box) - Proceed to click “Restore Now”
Step 8 - Click “OK” to restore all drivers
Restart and you’re done.
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Thank you for sharing :D, hopefully the moderators are fine with you posting the fix (I can’t see why they’d be against it, in fact, I’d be surprised if they were - given how several people have mistakenly “updated” their H6 pen drivers).