K9604w Firmware
: Older versions occasionally struggled to recognize FAT32 flash drives for backups; newer firmware has improved this peripheral compatibility. Zosi Help Center Support Upgrade Process
Note the Hardware Version and the current S/W Version . 2. Where to Download Official Firmware k9604w firmware
Place the firmware file (e.g., FWHI2104NS...rom ) directly in the root directory of the USB drive. Do not put it in a folder or rename it. Install: Plug the USB into the NVR's back port. Navigate to System Setup > System Admin > System Upgrade . Select Offline Upgrade and click Start . Keep the power on until the NVR automatically restarts. Method B: Web Interface Upgrade : Older versions occasionally struggled to recognize FAT32