If didn’t update to iOS13 and remain at 12.4.1, then when restore the new iPhone11 from backup (ie ver 12.4.1), will it work bcos the new iPhone11 is already pre-loaded with iOS13 ?
Thanks
You need to upgrade to iOS 13 on whatever device you are using now to be able to restore on iPhone 11. Because iPhone 11 will not have a software version lower than 13.0, you are unable to use anything below that.