Note that wireless functions cannot be used due to function failure due to upgrade of vro

The wireless functions of the router have been used well before. Since the upgrade, the wireless functions on the router cannot be used. Why? This is because the router encountered a problem during the upgrade process.
Most of this problem exists in some old wireless routers. When we configure advanced router functions, some functions cannot be enabled when we confirm that the connection is correct repeatedly, at this time, you may first think about whether the hardware is faulty.
First, check the version of the vro system. After reading the wireless router specification, check whether this function supports the vro system of this version. Vro systems usually have many versions, each of which supports different functions. If your current software version does not support this function, you should find the corresponding software and upgrade it first.
Click the "System Tools" option of the wireless router and select "software upgrade". The current software version and hardware version are displayed in the dialog box, in the displayed dialog box, enter "file name" (that is, the name of the system upgrade file) and "TFTP Server IP Address" and click "Upgrade.
When upgrading a vro, be sure to select the software that is the same as the current hardware version. Do not turn off the power of the vro during the upgrade. Otherwise, the vro will be damaged and unavailable, when the network is stable, the upgrade process is very short and the entire process will not exceed one minute. When you find that the router is restarted after the upgrade, Do not worry that this is normal. Generally, after the upgrade, the router will work more stably, and some new features are added for this version.