No news, atleast for me. is there a possible way to downgrade the firmaware? some could share how to do it

hi i have some problems with this router latest lte update, it broke 5g connection, lte works fine , 5g doesnt. it connects, and there is a connection but there is no access to internet. possible ways to downgrade lte firmware or just need to wait new update. if some one ask me to log something , te...