Hello! The firmware is excellent. But Volte only works with MTS in Russia. An icon appears in the firmware immediately. MegaFon, Beeline nothing happens. Yes, and there are no profiles of these operators in your firmware. If there is another update or addition to the RROS-Q-8.7.3 firmware -20220204-s2 then please add the profiles of other operators for Russia to the modem if possible. And it seems like Volte was unlocked and it only works with MTS. Thank you!