Along with this new NVR 2.2 SP3 version release, we released the new Backup Wizard which transfers makes the NVR2 2.2 SP2 different database format can work on NVR 2.2 SP3 v2.2.57. 

Backup Wizard Version: V2.0.17

Enhancement:        

1. Fix the database between NVR v2.2 sp3 and sp2 non-compatible issue.

Download  
Backup Wizard Download: Backup Wizard V2.0.17 (0.63mb) / Release Note: Release Note