[LG G5 Questions & Answers] gratefuldeaddougie:
I do have a LS 992 in my possession. It is not hard bricked. To day I will force a hard brick by downgrading improperly as an experiment to see if my theory holds true, universally across LG's G series. I have subscribed to a few services that provide the Quallcomm firehose, raw, and patch files that (in my opinion) Qualcomm should provide for free to the registered users of their products... What's needed is a Qualcomm recovery image for the LS992. Now there is a technique to build these files from scratch with nothing but traditional LG tools that most LG enthusiasts, I'm assuming, are already familiar with or should be. BoardDiag2.99 for .tot's and WindowsLGFirmwareExtract for .kdz's. For starters we need to know what FW version we bricked on. Take careful consideration that many devices on a global scale have been completely reformatted, partitioned, and flashed with FW different than what is embossed on the Logic Board. For example: I have probably purchased at least a dozen G4's advertised as H811 and retain the H811 stamp on the back bezel; but retain the gold embossed marking of H810 on the main board. I imagine this is done to mark up the price. As we know the H811 became more desirable than the H810 because of the difference of T-MO's and AT&T's corporate positions concerning bootloader unlocking. So before doing any "cliff diving triple lindey twist" down the deep flash rabbit whole we have to absolutely be positive of our main board variant and if it matches the FW variant we bricked on. Once that is established it is safe to assume our time and efforts will not be a waste of time. Is yourr main board Printed with LS9922?

---------- Post added at 07:54 PM ---------- Previous post was at 07:40 PM ----------

Follow this thread. I am going to try and help. Although this thread is for the LS992, I belive the concept is universal across Qualcomm platforms, specifically LG's. There is a post on the VS996 available to prepare your mind. If of course if you're looking for the mindless route there are many services in which to mail your device to. Most legit services charge about 50 bucks.

---------- Post added at 08:40 PM ---------- Previous post was at 07:54 PM ----------

I have not done any work on the G5 as of yet. I have acquired this device in hopes of safely and successfully rooting it. If the Sprint could be rooted. then the rest should just fall into place. As a matter of fact (I think) the board must be connected to the pc using the test points. The reason being is that even if when connected, device manager recognizes phone as "QHUSB_BULK" or "QDLoader_9008" the modem does not connect. Carefully exame the Windows Device Manager to be certain we are connected as QHUSB AND MODEM. If no QC modem Is avail. then the test points need to be accessed. With the skilled precision of a nuclear physicist, remove the board. Do not attempt this without a heat gun or hair dryer. You will break, if not, at least bend the chassis. Besides not to mention the LCD and Digitizer are at high risk if not reserving the highest level of attention and patience. Stopping often to evaluate our progress during disassembly is a good and advised practice, when concerning doing something we have never done before. Welcome to the world of the unknown. I personally shall feel no remorse if you yourself break your own device. I've have not taken apart this device my self. MadScientist? Can you find us a TUT on doing this? As this is your thread. I will be looking into building a recovery image prior to bricking my LS992. So that we will be able to revive our devices together.