Originally Posted by Cayniarb
** this assumes that you have adb and fastboot in your PATH and that you know how to use them.
** this also assumes that you have some recovery.img file (named as such) saved in whatever directory you are running terminal commands from.
** this also assumes you are running linux. If all of the above conditions are met, the process should also be the same on Windows and OS X, but I have not tested that and cannot confirm that.
** this assumes that if you do not fully comprehend all of the above, that you will stop reading now. I am not responsible for any damage caused to your device by following these instructions.
Step 1: Find and download the following images from the 126.96.36.199 RUU: radio.img, wcnss.img, and adsp.img. Save them on your device's storage partition (/sdcard) named as listed here (** this assumes that if you use other names you also know how to adjust future commands).
Step 2: Boot your device into fastboot mode. Your choice of 'adb reboot bootloader' or manually powering down, booting to hboot, and selecting fastboot. (Future commands assume your device is plugged in to the computer at this point)
Step 3: On the computer, run: fastboot boot recovery.img
Step 4: Wait for your device to boot in to what looks like a normal recovery session. While it looks this way, it is not normal. In this recovery, you have the ability to do pretty much everything you can on an s-OFF device (flashing boot or other partitions, etc).
Step 5: This will depend on your recovery. Whatever the process is, make sure that your /sdcard partition is mounted (not mounting USB, but making the /sdcard partition readable to things like adb).
Step 6: On the computer, run:
dd if=/sdcard/radio.img of=/dev/block/mmcblk0p17
dd if=/sdcard/wcnss.img of=/dev/block/mmcblk0p19
dd if=/sdcard/adsp.img of=/dev/block/mmcblk0p18
Step 7: In the same recovery session, on the device, flash whatever 1.78-based ROM you like (Note: I have not seen ill effects using this on a 1.53-based ROM, but YMMV).
Step 8: Reboot. Enjoy.
This is from the radio thread i would assume, that it will work the same way. All those files are included in the OTA zip file. Thoughts?
Device: LG Nexus 4