Hi, I have the a router LT-MR6500v and in the section "Firmware Upgrade" I see "Your firmware is out up to date". I have downloaded this : https://www.tp-link.com/it/support/download/tl-mr6500v/ but I

I use tl-mr6500v router with a Ho mobile SIM card. Internet connection and SMS work, but I cannot receive and transimit calls by an analog phone plugged ti RJ11 plug. In system logs I read: ERROR: Get