But it's still running and working, it was upgraded to 4.8.25 recently.
I only had a tar file backup of a 3.6.3 version of the full HCBv2 directory so I unpacked that one, will this result in a older working system?
I'm hesitant to reboot it

Can someone share a tar of the HCBv2 directory version 4.8.25?
Without any personalized files?