Zlt P21 Firmware Update Install Review

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You may have uploaded the raw zipped folder instead of extracting the .bin file first. Unzip the download and try again. Alternatively, the firmware file might be corrupt; try downloading it again. zlt p21 firmware update install

Use this method if you have downloaded a .bin firmware file to your computer. This public link is valid for 7 days

Never update firmware over Wi-Fi. Connect your computer to the ZLT P21 using an Ethernet cable. the firmware file might be corrupt