Most routers have a built-in update checker, which may or may not perform the entire process automatically.If you're using an Apple Air Port router, you can use the Air Port Utility program to check for updates.Go to download center for your Region on the TP-Link website.Then, select the appropriate drop downs for your TP-Link product.As bugs are found and corrected, updated firmware is released.Router manufacturers may also issue a firmware update to upgrade features such as outdated encryption modules or they might add entirely new security mechanisms that weren’t in previous versions of the firmware.
A firmware update can be somewhat dangerous if you don't take the right precautions.
2) Do NOT upgrade the firmware via wireless connection 3) Do NOT turn off the power or cut down the Ethernet cable during upgrade process 4）Please pay attention to the Notes of the firmware you downloaded.
In some cases new firmware cannot support a backup file of the older firmware.
Updating the firmware (a process often called "flashing the firmware") can help a router work better and sometimes even repair an annoying bug or add support for faster internet speed.
This is especially when a router reset doesn't help.