GNU/Linux Debian Installing Kernel Driver Backports Wi-fi Guide
Hi! The Tutorial Shows You Step-by-Step How-to Install Kernel Backports Wireless Driver in Debian GNU/Linux.
And Backports Kernel for Debian Project enables old Kernels to run the latest Drivers.
Especially relevant: the specific Backports Version includes the Drivers corresponding to that Kernel.
So you should try to Fix your System with a Backports Release that is not under your current Linux Kernel one.
The recent Versions of Backports support mainline Kernels back to version 3.0. The older backports-3.14 supports all Kernel versions back to Version 2.6.26.