Poor results from a MR5210 board

Dear Quectel,
As the titel sais, some time ago my board arived, and i can not get any better results. It is a MR5210 5gto2.5gb/s from MCUzone and the max speed I get is 30mb/s. Do I need firmware or are there any setting , I have overlooked?
Thanx in advance.
Btw. Iam using a 5g nano sim

Can I have Firmware for the RM520N-GL 5G , and qflash and qnavigator, is all i need?

Did you get better performance?