@ic3b34r Hi, you could verify the region version by the router device label first before performing the upgrade. The sticker is like the following, just besides the model number, it may show you...

@Sumera Does it mean the internet on the C6 won't come back automatically after the internet is restored on the modem? Can we confirm who is your ISP, and is the WAN connection type on the C6 Dynamic...

@PDCL Hi, below is a setup video for your reference to install the wireless router: https://www.tp-link.com/support/setup-video/ But if you still failed, please refer to the troubleshooting...

@Sumty_AX73 Good to know that. Work with him, and update the solution here once it is resolved.

@souravkai Hi, is it an EU version? Check the router device label to verify. May I know the reason that why you want to downgrade to the original version? Which firmware version do you refer to? If...

@RicardoSerra This is quite an old thread, it is suggested to open a new one on your own, and do remember to provide the model number of your TP-Link device. If you don't remember the login username...