The support team responded promptly, suggesting that John try a different method to update the firmware using a specific software tool. John followed the new instructions, but unfortunately, the update still failed to complete.
If an online update isn't available, you must manually download the firmware file (often a .bin or .zip file) from a trusted source and upload it via the "Local Update" section. zlt p21 firmware update
Enter the administrator credentials (usually found on the sticker at the bottom of the device). The support team responded promptly, suggesting that John
: Select "Check for Updates" to see if the manufacturer has pushed a new version automatically. The support team responded promptly