@Halils Refer to this FAQ when upgrading the DSL modem router FW. On a second thought: The FW you're trying to upgrade to is TD-W9960vV1_1.6.0_0.8.0_up_boot_210810.bin, which seems to be an older...

@AVA016 It depends on the Internet service that your ISP provides. If it's a broadband service then you'll need a ADSL/VDSL modem before the A6. If it's a cellular service then you'll need a 3G/4G...

@Rasmund No, you can't downgrade the FW to get this feature back. In newer device models TP-Link decided to replace this feature with QoS. Refer to this guide or your user guide if you want to...

@sidtanwar Are you with the latest FW release on AX20 ? If you Internet connection is Dynamic IP try setting these and test: Also you may check if the Internet port negotiation speed is correct:

@BabyClasher23 They are not the same - read this press release. You can see a comparison there as well. It's been advertised as the most budget-friendly dual-band Wi-Fi 6 router, lacking USB port and...

@BabyClasher23 Sure, check this answer.