Step 1 Check whether Internet Explorer is used.
Step 2 Check the security settings of Internet Explorer.
Step 3 On the tool bar of Internet Explorer, choose Tools > Internet Options > Security > Custom level.
Step 4 In the displayed dialog box, locate Miscellaneous and set Include local directory path when uploading files to a server to Enable.
Step 5 On the upgrade tool page, click Browse again to select the software package.
Step 6 If the fault cannot be rectified, contact Huawei technical support personnel.