Hey Guys Here is the new adding for the NVR5XXX-4ks2 NVRs. FW Version: DH_NVR5XXX-4KS2_MultiLang_V3.215.0000001.0.R.20180326 Functions adding. 1. Client playback effects are optimized for higher multiple playback 2. Configuration restore default unified 3. pos demand optimization 5. Increase IP availability for test IP settings 6. Support smart picture download 7. Increase support for Lechange 3.0 8. Support Overseas Multilingualism 9. channel coding strategy adjustment 10. The default display resolution scheme is unified 11. Device Initialization Password Reset Function Add Enable Switch and Optimization 12. custom configuration optimization, support configuration item compatible merge 13. Limiting the interconnection of domestic products with International models 14. Support DHCP to set DNS 15. Overseas optimization of license plate detection 16. Support preview decoding buffer adaptive 17.flash space optimization, increase the extended partition support 18. Support MP4 format backup 19. Close Dahua DDNS, only close the configuration interface, function reservation 20.Overseas Anti-Cross Goods - Domestic Procedures for Upgrading Overseas Programs 21. Support device abnormal information collection coredump 22. Overseas apps switch from easy4ip to DMSS Here is the link from dahua about the releasing Note https://www.dahuasecurity.com/asset...1-0-R-20180326_Release-Note-V1_3-20180508.pdf Attention before upgrading, make sure your system no hacked Chinese models, or else the cams can't connect to the NVR anymore after updating. Also make sure your NVR is original english one and can be updated. I can send firmware to 1-2 guys for testing firstly. Anyone is interesting,can contact me.