Sierra 8795 and 411U

Hello!It’s my first time i write in the forum and i would like you to give an advice.I have a sieera MC8795 3g module that works fine in routerboard 411-5nH but not in the 411 5G model. Have you got any ideas???
In the log file i have intializing modem and dialing out all the time.
Thank you very much in Advance!