Ensure the drive is FAT32. Move the upgrade file completely out of subdirectories into the root directory. The firmware is built for a different mainboard variant.
Ensure no other software is trying to poll data from the device over port 4370 during the upgrade process. zkteco f18 firmware update download
Ensure you downloaded the firmware specific to your regional model. Installing incorrect firmware can permanently damage the terminal. Ensure the drive is FAT32
Upgrading firmware carries a risk of permanently bricking your device if done incorrectly. zkteco f18 firmware update download
Can you provide the or manufacturing date from the sticker on the back of the device?
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