Sunell Security SN-TPC4201VT, User Manual, Page: 56 / 59

A Troubleshooting
Thermal Imaging Box Network Camera
User Manual
48 Issue V1.0 (2020-10-28
）
Common
Trouble Possible Cause Solution
An error
occurs in
accessing
the web of
the device
after the
upgrade. The data in the
cache of browser is
not updated in time. Delete the cache of the Internet Explorer. The
steps are as follows (taking IE9 as an example):
1. Open the Internet Explorer.
2. Select Tools > Internet Options .
3. On the General tab, select Delete under
Browsing history .
The Delete Browsing History dialog box
appears.
4. Select all check boxes.
5. Click Delete .
Login again the web page of the camera.
Upgrade
failed.
⚫
No network cable
is connected.
⚫
The network
setting is
incorrect.
⚫
Ensure the upgrade network is connected.
⚫
Check whether the network setting is correct.
The upgrade
package is incorrect. Perform the correct upgrade package again.