Manually update to 4.4.2 from 4.4 while keeping LTE

Let's say :

- you have a Nexus 4
- you have unlocked your bootloader
- you're running 4.4 with LTE radio (see one of my previous posts)
- you DID NOT received the OTA update for 4.4.2 yet

Check your build number in Settings/About Phone/Build Number, download the image corresponding to your build and reflash the modem that corresponds to your build.

In my case, I was running KRT16S so I reflashed the 2.0.1700.84 baseband modem :

$ adb reboot bootloader
$ fastboot flash radio radio-mako-m9615a-cefwmazm-2.0.1700.84.img
$ fastboot reboot

Download the OTA update from 4.4 to 4.4.2 here :
http://android.clients.google.com/packages/ota/google_mako/4f6d2fc7377dbb48caecaa658bb139da2b063b33.signed-occam-KOT49H-from-KRT16S.4f6d2fc7.zip

Source :
http://www.xda-developers.com/android/google-rolls-out-android-4-4-2-for-nexuses-otas-captured/

$ adb reboot recovery

Then, get into "sideload" mode :
"Press and Hold the Power button and then tap the Volume Up button within a second to display the menu. This can be a bit tricky if you don’t do it right so if your device reboots just try again."

Select the 2nd option : "Apply update from ADB"

$ adb sideload 4f6d2fc7377dbb48caecaa658bb139da2b063b33.signed-occam-KOT49H-from-KRT16S.4f6d2fc7.zip

When the process finishes choose to reboot the phone.

When your phone has rebooted, simply flash back the LTE radio from JOP40C or JOP40D (baseband 2.0.1700.33)

$ adb reboot bootloader
$ fastboot flash radio radio-mako-m9615a-cefwmazm-2.0.1700.33.img
$ fastboot reboot

For more info on hybrid modems, check this post on XDA :

http://forum.xda-developers.com/showthread.php?t=2087227

And all the Nexus 4 (occam) images can also be found here :

http://www.randomphantasmagoria.com/firmware/nexus-4/occam/