In the web GUI what's shown under Firmware Version Property in System Settings?I've not found any link related to the ipc-b220 either.
OK, so it's missing the very useful info string that's usually at the bottom of that page that helps figure for an OEM model where to get the firmware.This is everything on that page.
This XML file does not appear to have any style information associated with it. The document tree is shown below.
<ResponseStatus xmlns="http://www.hikvision.com/ver20/XMLSchema" version="2.0">
<requestURL>/ISAPI/System/diagnosedData</requestURL>
<statusCode>4</statusCode>
<statusString>Invalid Operation</statusString>
<subStatusCode>invalidOperation</subStatusCode>
</ResponseStatus>