This question already has an answer here:
I really need
It is necessary from OS X 10.9.5 (13F1911), that is, with all the latest changes, from just 10.9.5 is not needed.
My request how I can get this Apple software? Re-installing the OS from Recovery is very undesirable, since many valuable files are lost.
In addition, it will be restored from 10.9.5, but not from OS X 10.9.5 (13F1911)
All the methods described here can not solve the problem with the latest Apple updates. Specifically, my system has quite a few modifications I fear I’ll lose.
My English is likely bad here but I'm trying to say that I've spoiled the kext and all recovery methods are not suitable for one simple reason: in the version that I can download from App Store and in versions in /Volumes/Recovery HD/ com.apple.recovery.boot/BaseSystem.dmg updates of the latest releases are not implemented!
(It all happened because I'm trying to implement a patch has not attended to the preservation of the original version, that is that's such bad luck!).
UPD2: no simple copying will produce the proper result, you need to implement kext:
sudo kextcache -system-prelinked-kernel sudo kextcache -system-caches sudo touch /System/Library/Extensions/ reboot
Thank you in advance for your help, and sorry for the bad english as I’m not a native writer or speaker.
Another question for the moderator: what does "duplicate" mean? What duplicates my simple request to help me get the the file which I need?