Support 8 IO
<p>If it is an 8CH device，Software version must be: D2019080681
The device does not need to be upgraded
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/6cd4dbd0b9892cc130aa8e11d5edd16c" alt="" /></p>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/c792908303ee692de53b87dfd5939820" alt="" /></p>
<p>If it is an 4CH device，Software version must be: D2021120881
The device need to be upgraded
4CH device upgrade firmware：<a href="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/5016e604231b568937c3977efe1e5dd8" title="[Support 8 IO, 4CH device.rar">Support 8 IO, 4CH device.rar</a></p>
<p>The upgrade steps are as follows:</p>
<ol>
<li>
<p>Create a new folder and name it updatedvr
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/166925aa1b1130fa922d35a42daccbf0" alt="" /></p>
</li>
<li>
<p>Copy the firmware to this folder
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/82817fc9198cd56db981c6e8c9424f5a" alt="" /></p>
</li>
<li>Copy the folder where the firmware is located to the SD card
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/cf7acff7a959ff13916e61c64533cdd8" alt="" /></li>
</ol>
<p>4.Insert the SD card into the device, power on the device and start the upgrade, please do not power off during the upgrade process</p>