Most K9604-W systems do not support "Over-the-Air" (OTA) updates and must be updated manually via USB.
Once your is successfully updated, follow these maintenance tips to ensure longevity: k9604w firmware
: Use a USB 2.0 flash drive (ideally 16GB or smaller) formatted to File Placement : Place the firmware file directly in the root directory (not inside a folder). Installation System Setup > System Admin > System Upgrade on the NVR and select Offline Upgrade Most K9604-W systems do not support "Over-the-Air" (OTA)
: Older versions occasionally struggled to recognize FAT32 flash drives for backups; newer firmware has improved this peripheral compatibility. Zosi Help Center Support Upgrade Process k9604w firmware