I have EM7455 connected to Windows desktop. I have installed latest Sierra Windows driver package. Modem works nicely and can handle even eSIM card and profiles. Our eSIM card has GID1 value in metadata. Windows has APIs to read this GID1 value. Unfortunately it is always empty in this setup. I wonder if Sierra Windows driver lack support of reading GID1 from SIM.
I have Surface Tablet having integrated modem and drivers from modem vendor. It can nicely return our GID1 value from the same eSIM card.