two options: 1- The bios is not flashed with new version (your side) 2- The modification is not correctly done. (my side) How to verify if bios is flashed with new version: Make a dump with this tool and upload the file. note: other informations are welcome, like the brand and model of the new WWAN card.
Broadcom atheros First slot Working Working Second slot Working Not wroking If I swap card all is working but i cant mount it in motherboard. (not this size)