Enable UL-MIMO on X70, X75 modems with MPSS.DE.x.0 baseband firmware or newer:

This guide assumes you are already familiar with QPST and how to gain access to the diag port on your device. See this guide for enabling diag on various commercial UEs: Link

Confirmed working with the following devices:

• Samsung Galaxy S24 Ultra (SM-S928U1, SM-S928U, all US carrier variants)

Devices with UL-MIMO enabled out of the box by the OEM:

• Motorola Edge+ 2023 (XT2301-1)

How to enable UL-MIMO

Step 1: Launch EFS explorer

Launch QPST with your device in diag mode. Then, open the EFS explorer.

Step 2: Upload the NV item files for UL-MIMO

Navigate to /nv/item_files/modem/nr5g/RRC/

Right click and “Copy item file from PC”, do not drag or drop.

List of NV item files:

/nv/item_files/modem/nr5g/RRC/cap_limit_rf_mimo set to 0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

/nv/item_files/modem/nr5g/RRC/cap_ctrl_srs_as_and_ul_mimo set to 0x01

For dual SIM devices, also copy over the files suffixed by _Subscription01

Download from here