MC7421 Firmware Upgrade Failure

[jyijyi]

See if this helps

EM7565 problem after firmware update failure

you need to use MBPL version upper than R27 to run the lite-fw-download to upgrade module in boot and hold mode sudo ./bin/fwdwl-litehostx86_64 -c QMI -m 4 -d /dev/ttyUSB0 -f /home/jordan/Downloads/FW_EM74x1/SWI9X50C_01.14.03.00_GENERIC_002.036_010/