The VP9050 tap language is Chinese and the customer try to change it from login and home page
Step 1 Power on the computer and the terminal.
Step 2 Extract the compressed file of the upgrade software on the computer.
Step 3 Run UpgradeTool.exe to display the window as shown in Figure 13-1.
Step 4 Click Browser, and then find the file in .dat format.
Step 5 Enter the IP address of the terminal, such as 192.168.1.1.
Step 6 Click Upgrade.
Step7 If password needed try viewpoint9000 or ChangeMe
you may use 9030 in update because there is no 9050 firmware in the support page