Yes, or instead head to page 1 of this Post and do this:
"Now use the File Explorer and go to:
C:\Users\<YourName>\AppData\Roaming\Apple Computer\MobileSync\Backup\<60ea0d293332c1db596d8955c9d6a262954ea86e>
At least at my computer the last folder name was <60ea0d293332c1db596d8955c9d6a262954ea86e>, but it may or probably is a different folder name with you.
(Please note that I have a Windows PC, it may be in a different location on e.g. an Apple computer? I don't know, because I don't have one, so can't check. On an Apple you then need to find the location on your own I guess?)
In that folder look for a file named Info.plist.
Open that file with the Notepad app, which is a file editor that will not change the format of the file.
Look into the file and then search for Product Version (Tip: use Ctrl F), and you'll find a section that looks like this:
<key>Product Type</key>
<string>iPhoner10,5</string>
<key>Product Version</key>
<string>12.3.2</string>
<key>Serial Number</key>
<string>XXX</string>
Then change 12.3.2 to 12.3.1 (make sure that you only change the 2 in a 1) and then save the file.
Now you can set up your new iPhone Xs (Max) / Xr the usual way without losing any data that was on your old iPhone 8 plus by setting it up not as a new phone but at a certain point in the proces restoring it from a backup in iTunes. By selecting Restore from iTunes, then connecting the new iPhone Xs (Max) / Xr to your computer and let it connect to iTunes, next select the most recent (just slightly modified) backup files and then it will work. Your Xs / Xr will start restoring from the iPhone 8 plus backup!!!
The only thing I still had to do was to login again in various e-mail accounts and Whatsapp with my respective passwords to make contact again and have e-mails, Whatsapp messages etcetera copied to or make accesible again at the new Iphone Xs.
For me it did work perfectly. I hope other people may benefit from it too."
This solution is from another member of this forum, i will not take any credit from it.