If your camera is working stably, do not update . Only update if you need a specific security patch or bug fix.
Verify your hardware platform code. Ensure you are not trying to flash an R6 firmware onto an E-series variant of the DS-2CD1021-I. 2. The Upgrade Progress Gets Stuck at 99% or Fails Safely
The SADP tool froze for a second. Then, a status bar appeared: Upgrading... Do not power off. ds-2cd1021-i firmware download
⚠️ TFTP recovery is a last-resort procedure. If performed incorrectly, it can worsen the situation. If you are not comfortable with command-line tools and network configuration, contact a professional installer or Hikvision technical support.
Last updated: October 2025. Firmware links and procedures are verified as of this writing. If your camera is working stably, do not update
Always avoid third-party forums or unverified blog links to prevent malware injection. Only use official Hikvision portals:
Elias selected the device. He clicked the "Upgrade" button in the tool interface. A file dialog box popped up. Ensure you are not trying to flash an
Click "Browse" and select the firmware file you downloaded. Start Upgrade: Click "Upgrade".