Hello Quectel Team,
Please disregard my specific request in the original post for the A04 version—that was an error on my part.
I am already running a newer firmware revision: RM520NGLAAR03A03M4G. However, my module is still experiencing the 5G NR capability mask bug that caps my connection to 2x2 MIMO on T-Mobile band n41 (AT+QNWCFG="nr5g_mimo_info" reports 2,2 under full load).
Could you please provide the direct download link for the absolute latest stable build update for the RM520NGLAAR03A03M4G series that resolves this T-Mobile 4x4 MIMO cap?