No WiFi on Dell Inspiron 5559 with Debian Jessie and Kernel 4.2

How to resolve WiFi issues on Dell Inspiron 5559 running Debian Jessie with kernel 4.2.

How to Resolve on Debian Jessie

For custom +4.2 kernels, check this link and download the appropriate wireless driver:

# wget
# tar xf iwlwifi-3160-ucode-15.227938.0.tgz
# cd iwlwifi-3160-ucode-15.227938.0
# cp iwlwifi-3160-15.ucode /lib/firmware/

Reload the module:

# modprobe -r iwlwifi ; modprobe iwlwifi

WiFi should be working now.

The lspci snippet:

01:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)
    Subsystem: Intel Corporation Dual Band Wireless AC 3160
    Flags: bus master, fast devsel, latency 0, IRQ 125
    Memory at d1100000 (64-bit, non-prefetchable) [size=8K]
    Capabilities: [c8] Power Management version 3
    Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [40] Express Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Device Serial Number 78-0c-b8-ff-ff-4b-66-8a
    Capabilities: [14c] Latency Tolerance Reporting
    Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
    Kernel driver in use: iwlwifi