../ V5.4.800 safe version/ 15-Oct-2021 21:29 - DS-2DE series PTZ firmware 5.1.0 Release Note.pdf 08-Jul-2021 10:29 435280 SPD V5.3.0 Release Version Release Note.docx 08-Jul-2021 10:30 31681 SPD V5.3.8 Release Version Release Note.docx 08-Jul-2021 10:30 26899