MC7455 Firmware

So we updated a couple of our cards with the latest firmware (SWI9X30C_02.20.03.00), now Windows does not recognize them. We updated to the latest drivers as well (USB Drivers Build 4581). With the previous loaded firmware (SWI9X30C_02.08.02.00_00) the card works fine with the latest drivers and previous drivers.

My questions are what is causing the problem and how do I downgrade the firmware?

Windows 7 64 Bit, Sp1, updated

Same problem here. Installed latest USB drivers followed by the Verizon firmware (took about 5 minutes, looked OK). Now the device doesnt even enumerate on the USB anymore

Rebooting the PC fixed that problem BTW


Have you checked either “QDLoader Port” was shown inside Windows Device Manager ? If exists that module were brought up at “Boot and Hoid Mode” and waiting for Firmware Update. You could try update via linux.