For issues or rollback assistance, contact technical support at [Insert Support Email/URL] with your device model and current firmware version.
Earlier versions (V4.03.r07 and below) had frame drops when mixing H.264 and H.265 streams. R11 corrects the decoder buffer overflow. V4.03.r11 H.264 H.265 Dvr Nvr Firmware Download
Patched known vulnerabilities in the web server module (CVE-style fixes). Stronger password policies are now enforced. For issues or rollback assistance, contact technical support