@parad0x0 I tried to set the GPON Serial Number and GPON Password from the ISP's router, but the connection did not work! I am suspecting the ONT make use of additional data (maybe Mac Address?) to...

@parad0x0 Thanks for sharing the new firmware and the steps for the hidden menu. However, I could not manage the TX-6610 to work with the ISP Vivo!! I have no idea what is wrong!

Hello @parad0x0, Could you please share the firmware that solved your problem? I am also from Brazil and my ISP is Vivo as well. Thanks!

@Sunshine It does not make sense! The firmware is delivered by TP-Link with the hardware. Hence, is TP-Link's responsability to release the latest firmware with all bug fixes and improvements!! Until...

I recently bought a TP-Link TX-6610 and it came with a more recent firmware version that is not present on the TP-Link's website: In order to try to solve a connection issue with my ISP, I performed...