[G3 General] topet2k12001:
Responses 03.26.2015

Hi Friends,

Good to see that people are pre-packing Imageprep with firmware files for their corresponding LG G3 variants. Thank you for helping me; I can't always be online as I am busy with my job.

Props to @wytecaztle, @tmjm28, and [MENTION=6529004]eldragon0[/MENTION]!

Hi @ozaq1,

I think what the others did is a good alternative than to pre-pack Imageprep with image files for all (or the most common) LG G3 variants. If there will be more members who can pre-pack Imageprep with image files for the respective variants and share the download link, I'll just add those links to the First Page.

Now on to your specific problem:

1. I have read in one of the threads here in XDA that the country-variant is not that important, so long as the firmware is designed for the same LG G3 model. For example, the D855 model has a lot of country variants, plus it has two variants as well in terms of Internal Storage (16GB/32GB). And I guess, this should be a concern ONLY if you are flashing the entire firmware, because there are some image files of a firmware (a "firmware file", i.e. the "KDZ" or "TOT", is a package of image files) that is designed only for a specific country (especially the modem.img = this is the "baseband" or in other words, the "driver" for the radio of the phone which transmits/receives signals for calls/Internet).

2. For our purposes here in this thread, we are flashing only aboot.img and laf.img. The aboot.img is the "Android Bootloader" and the laf.img is the "Download Mode" feature...none of which has an adverse effect on functions like making/receiving calls, or risks to incorrectly flashing 16GB versus 32GB, or a risk of incorrectly turning your "European" LG G3 into a "Global" or "Asian" (or whatever region) LG G3.

Again, it would be a concern if the intent is to flash the entire firmware (for purposes like "getting back to stock"). You'll most certainly get into trouble. As far as I know, the aboot.img and laf.img won't have anything to do with adversely turning your LG G3 into some incompatible model/variant. The only time that I know this statement to be true is the Verizon (US) LG G3, Sprint (US) LG G3, and T-Mobile (US) LG G3 - based on what I have read. I've never lived in the US, but I do have friends and colleagues at work from the US. And based on their stories, carriers/service providers tend to "lock down" the devices they sell to the point of modifying some image files so that it becomes "exclusive" to the corresponding carrier (someone from the US can explain this better).

With that in mind, if I perhaps owned your specific LG G3 model, I would download the latest "Kitkat" firmware for the LG G3 D855 (International or Global). I'll only need the aboot.img and laf.img anyway.

The only "worst" thing that can happen, should it prove to be incompatible, is:

1. You will not boot into Android and get either a "certificate verify" error with the LED flashing red and blue...or a "Secure Boot" error and then the device will shut down (caused by the "incompatible" aboot.img). But since Imageprep flashes TWRP custom recovery first and foremost, you can boot into TWRP and fix it. I already made a tutorial for this in the "Troubleshooting and Q&A" section.

2. If you try, you will not boot into "Download Mode" (this is caused by the "incompatible" laf.img).

I know there is a risk with the suggestion I provided, but a risk is manageable if we are educated and prepared in advance in knowing what to anticipate - and what to do should the uneventful happens. I don't foresee that you will get into a "total brick" scenario with my tutorial. Again (and again, lol...) - unless you flash the entire "uncertain" firmware. This tutorial only needs the aboot.img and laf.img of a Kitkat firmware for your LG G3 model/variant.

HI @squall458,

I believe there is a member here who successfully made it using Imageprep and he/she owns a D852. You might ask him/her for the Kitkat aboot.img and laf.img.

EDIT: check the quoted post of [MENTION=6204688]tmjm28[/MENTION]. He owns a D852 and he pre-packaged "Imageprep" so that it already contains the appropriate files for the D852. So in this case, you just need to download his repackaged "Imageprep" and go ahead with the tutorial since the needed files are already there.

Hi @Sorkz,

Depends. There are three (3) methods of getting TWRP to work on a rooted LG G3 running Android Lollipop:

1. "Kitkat Downgrade" Method

2. "No Downgrade" Method

3. "Imageprep" Method (basically this is just an automated version of the "No Downgrade" Method)

Do let us know and someone from this thread will respond to you. :)

Hi [MENTION=4113992]floring75[/MENTION],

Thanks for the confirmation! Download Mode works too?

Yes. :) You don't need the entire firmware, you will need to extract only a couple of Image files for this tutorial (depends, if you are going for the "Imageprep" method - there are 3 methods available).