yashsingh1/xdaforums huggingface dataset:
[G3 Original Android Development] m1trand1r:
if you have any TWRP up n' running (installed) means that you're bumped...nothing to worry about anymore...as you might have notice around ...you can find "custom roms" labeled as [BUMPED] or w/o this tag....the thing is the same....if it's custom it's bumped ...when and if you ever have to flash stock .kdz again....than you'll have to bump it again...meaning installing TWRP again....I didn't understand "bump" at start....I just did all that what i've read in threads....[emoji14]

/LG-G3/d-855/16Gb/Titanium Black/
[G3 Original Android Development] z.coniglietti:
thanks m1trand1r. I most certainly appreciate people developing but don't label it something that it isn't. i thought i should install a "special" version of twrp (bumped) and that the regular twrp is not good because it is missing some mod or code.

the problem with my phone i couldn't root it with their tool so i went with purple drake's method on my d855 32gb and it worked then i just installed a regular twrp.

i need to ask these questions because it is really complicated modding a non nexus phone.
[G3 Original Android Development] m1trand1r:
well I was on S-2 prior coming to LG....and....at first it looked complicated but later once you do all the things...there's nothing to worry about...:)

And yes.....we DO have special TWRP version for our G3 d855 ONLY.....it's made by [MENTION=2174433]Skin1980[/MENTION] and that particular TWRP supports Multirom feature like on Nexus devices....and what I found very useful within that TWRP is modem backup feature which is awesome....although I don't use multirom anymore....twrp is still very useful for me...having it stored on my extsdcard :D

/LG-G3/d-855/16Gb/Titanium Black/
[G3 Original Android Development] DE52:
To put it in the simplest terms possible, the process in this thread is designed to modify the boot.img so it accepts the signatures given to files that you flash. This is done because when the phone boots, it checks if all signatures (these are like IDs in a sense) match or are a value that is appropriate. So, basically, we "bump" files to attribute them a signature (basically like giving it an approved ID) which your modified boot.img will accept even though it is a custom recovery, custom ROM, custom kernel, etc. Technically, like m1trand1r, mostly everything is already bump'd on XDA even if it is not labeled because otherwise, your phone or recovery would not boot.

That's why when upgrading to lollipop, you have to bump the boot.img again (because obviously it's been overwritten with a completely stock one) and also reinstall a bump'd TWRP (unless you're using autoprime's technique to upgrade to lollipop) in order to boot into it (trying to boot to a regular TWRP would just cause a boot error). Hope you guys understand better now ;)
[G3 Original Android Development] zuixian:
Hi Jojoban,

May I ask for your help to share how did you achieve TWRP on Lollipop?

I plan to do the following this weekend, do you think it can work ?

http://xdaforums.com/showpost.php?p=59564634&postcount=255

Many Thanks in Advance :)
[G3 Original Android Development] TheLastShadow:
Thanks for the post.

Tried to flash twrp to my d855. Everything seemed to work until I tried to go in recovery mode.

There is something written in the top left corner. It disappears very quickly so I can't read the entire message but I think it says that the signature verification failed. Then, screen goes black and led is flashing red & blue. I've to take of the battery to reboot.

Any idea how to fix this ? :(
[G3 Original Android Development] m1trand1r:
How and with what you flashed TWRP?

And which one on to which OS version ?

>LG-G3<>d-855<>16Gb<>Titanium Black<
[G3 Original Android Development] TheLastShadow:
Rooted D855 running stock lollipop
[G3 Original Android Development] topet2k12001:
Hi [MENTION=3665266]TheLastShadow[/MENTION],

This is what [MENTION=5374539]DE52[/MENTION] was explaining (2 posts above you).

Basically you need to ensure that:

1. You flash a "bump'd" TWRP

2. You flash a "bump'd" boot.img

3. You flash a "Kitkat version" aboot.img (meaning, the aboot.img that you will extract must come from a Kitkat firmware - the firmware for LG G3 is usually in the form of a KDZ or TOT - for your model/variant). No need to "bump" this file.

What is "bump"?

It's another name for "patching" or "signing" the image (.img) files.

Which files need to be "bump'd"? The Lollipop version boot.img (boot.img that you extract from a Lollipop firmware - KDZ or TOT) and your custom recovery (TWRP) need to be "bump'd", i.e. "signed" with a "Kitkat" signature.

If you are currently running Android Lollipop, it means that another file (aboot.img) is Lollipop version. You need to replace it with Kitkat version.

In this way, all three files will "recognize" each other because they are all identified as "Kitkat" version.
[G3 Original Android Development] TheLastShadow:
Thanks for your answer. So, I'm missing kitkat's aboot.img ? How can I flash it ? Flashing a kitkat aboot.img will not brick my phone ?
[G3 Original Android Development] topet2k12001:
You can read all about it in my thread (link in my signature).

There are three (3) ways to add TWRP to a rooted LG G3 running Android Lollipop:

1. "Kitkat Downgrade" method: downgrade to the latest Kitkat and then you will flash a Lollipop system.img, boot.img, and modem.img

2. "No Downgrade" method: you will flash a Kitkat boot.img and laf.img

3. "Imageprep" method: an automated version of the "No Downgrade" method. It is in the form of a Linux Shell Script...something that you execute/run via the Android Terminal Emulator

Instructions/step-by-step are in the thread linked in my signature.

In all methods, you need to learn how to "extract" those files from an LG G3 firmware (be it Kitkat or Lollipop). Go to Page 1, Post #2 of my thread for a step-by-step on it.

WARNING: since you will be extracting the same file names from a Kitkat and Lollipop firmware, there is the risk of confusion. Make sure to rename the files in a way that they will have different file names (e.g. kitkat-aboot.img for the one you extracted from a Kitkat firmware, and lollipop-boot.img for the one you extracted from a Lollipop firmware).

It can be a combination of (we can deduce, based on what you have done already):

1. You are missing Kitkat aboot.img

2. You have flashed Kitkat aboot.img, but your recovery.img (the TWRP one) is not "bump'd" (so you will get "certificate verify..." error when trying to boot into Recovery)

3. You have flashed Kitkat aboot.img and custom, "Bump'd" recovery.img (TWRP), but your boot.img has not yet been "bump'd" (so you will be able to boot into Recovery but you can't boot into Android)

4. Your recovery and boot.img have already been "bump'd" but your aboot.img is still Lollipop (so you have to flash the Kitkat one) - so you will get a "Secure Boot Error" and not boot into Android in this case.

In short, all three (3) I mentioned above need to be fulfilled or else you will get variations of the "certificate verify..." error or "Secure Boot" error as outlined above.
[G3 Original Android Development] AA27:
LG G3 Vigor (LG LS885) got root with this method: http://xdaforums.com/android/development/guide-root-method-lg-devices-t3049772

But we do not have a good recovery since no one has done it (the closest one is from Vietnam with the LG Beat and the SD backup option is not available). Can you guys work something now that this phone has root?

AA27
[G3 Original Android Development] gkillershots:
all variants? including d690n ?
[G3 Original Android Development] dicksonjoe:
I flashed the D852 through flashify. I still can't get into Twrp.

Before the installation I got the rooting part done correctly also, what am i doing wrong?

I am on Stock Lolipop, Canadian carrier Fido.
[G3 Original Android Development] DE52:
This method was for Kit Kat only. That's why it doesn't work. To install TWRP in lollipop, you'll need to follow the guide here: [GUIDE][ROOT][BUMP][TWRP] Imageprep: Auto-script to Add Bump+TWRP for Rooted LG G3
[G3 Original Android Development] jfodra:
Hi. I can't get it to work. I used the mentioned method and the flashify app method, but after rebooting, it says secure boot error. And then it goes to a black screen with the led changing colors. I can reboot it but I can't get it to twrp.
[G3 Original Android Development] DE52:
What exactly did you do? Outline it in more detail. One thing I can confirm is that the flashify method doesn't work on lollipop
[G3 Original Android Development] dicksonjoe:
I did exactly the same thing. Twrp didn't unlock my bootloader unfortunately.

So i rooted my phone sucessfully, flash the twrp img file using flashify and I still can't get into Twrp. On the very top left corner of the lg boot screen it says error boot as it tries to boot into TWRP.

I am running L, model D852.
[G3 Original Android Development] nickslg:
Im getting the same issue and i followed the instructions to the letter
[G3 Original Android Development] gpgon:
For all those having issues, its pretty painless to revert to KK http://xdaforums.com/att-lg-g3/general/unroot-return-to-factory-stock-att-lg-g3-t2820827

Root (towel root) then bump and TWRP that https://play.google.com/store/apps/details?id=com.jmz.soft.twrpmanager&hl=en

Then flash the lollipop modem and file and SU
[G3 Original Android Development] DE52:
Sorry for the slow reply. I was busy the last few days. The thing is, you have to flash certain files for TWRP to be accessible on lollipop. It isn't like on Kit Kat where it was two steps. To get TWRP working on lollipop, you need to have the Kit Kat bootloader (so kit kat aboot.img), a bumped boot.img (the one from lollipop) and also a bumped TWRP. Did you simply install the lollipop OTA and root the phone? Or did you come from modified Kit Kat (with TWRP and such installed)
[G3 Original Android Development] dicksonjoe:
I updated from kitkat to L fresh from the box. I then tried flashify twpr img file but that didn't seem to work. Now i guess doing the script method is the only way, unless if there is an option for me to downgrade to kitkat and start from beginning.
[G3 Original Android Development] gpgon:
See my post about 2 above
[G3 Original Android Development] DE52:
Ok, well you can't do the process outlined in this thread for lollipop. It was designed for Kit Kat. You would have to use the script way (with all appropriate files of course).

Downgrading is possible too since all you need is LG's FlashTool and your models Kit Kat KDZ or TOT. This would allow you to go back to Kit Kat and use this method (the one in this thread). After that is done, you can simply do what [MENTION=3662790]gpgon[/MENTION] said if you're going to be flashing a ROM directly, but if you're going to be upgrading back to stock lollipop, you would need to follow the guide from the same thread as the script (The OP there outlines all 3 methods i.e. downgrade, no downgrade (doing what the script does manually) and the script itself)

P.S. I would advise you to update TWRP to the latest version (on the forums) once you get it working so you can have the latest features, compatibility, and also be able to backup your modem (everything related to your radio signal and such)
[G3 Original Android Development] topet2k12001:
Basically:

The procedure being referred to by @gpgon is the "Kitkat Downgrade" method that I am describing in my thread (it's one of the 3 approaches/methods available to have root + TWRP in Android Lollipop for LG G3). This is also a valid method, and is actually one of the first methods known that can get us root+TWRP on Android Lollipop.

Others, who have already updated to Lollipop and already rooted (but want to also have TWRP) and DON'T want to downgrade to Kitkat, will have to follow the "No Downgrade" method that I described in my thread. It's practically similar to the "Kitkat Downgrade" approach, except that you will be flashing a different set of image files.

Since both methods are "too manual" (and therefore open to human error), I came up with a script called "Imageprep". It does exactly what the "No Downgrade" approach does. The only difference is that it is "automated" so that users won't have to type in a lot of commands manually.

BOTTOMLINE: any of the three methods will yield you the same result: root+TWRP on Android Lollipop. But you can't do it the same way as it was back in the Android Kitkat days.

Also please listen to what @DE52 is saying. He is explaining the logic behind why adding TWRP on a rooted LG G3 running Android Lollipop is not the same as how it was done back in Kitkat.

If you want a more detailed explanation, please visit my thread and read the very first post (Page 1, Post #1).

Hi [MENTION=4692977]nickslg[/MENTION],

Which instructions are you referring to? The one in this thread, or the one in Imageprep?

If it's Imageprep, I have just responded to you; awaiting your screenshots.
[G3 Original Android Development] nickslg:
Heres how my internal storage looks...... by the way supersu isnt recognising terminal emulator i get a pop up message but its not showing in supersu app
[G3 Original Android Development] topet2k12001:
Hi [MENTION=4692977]nickslg[/MENTION],

Please continue posting to the Imageprep thread so this thread will contain relevant conversations (we might be tagged as going off-topic). I already responded in the appropriate thread.
[G3 Original Android Development] dicksonjoe:
Do you have the link for the recommended procedure? thanks. I would like to give it a try by installing twrp and unlock the bootloader in L. Thanks.
[G3 Original Android Development] DE52:
Click [MENTION=5231281]topet2k12001[/MENTION] signature to access his thread (that was the thread I was talking about that explains all 3 methods). It will guide you through all these different methods in the simplest terms possible and in great detail (yes, his OP is long, but it's so you don't create a 700$ paperweight, so read all of it (or at least the parts relevant to the method you want to use + the FAQ)).

Edit: He posted above you by the way
[G3 Original Android Development] sebadamus:
Thanks, it workd on my Kitkat stock rom LG G3 d855 32gb international (argentina) previously rooted
[G3 Original Android Development] SNaReX:
Does it work on D802 LG g2
[G3 Original Android Development] checasey:
I got adb shell out of date then it said killing......

now when i start the minimal adb and fastboot command prompt it looks like this image attached, also used flashify to flash the image d855 and then reboot to recovery but it doesnt do anything to the point where i had to take the battery out. ANy ideas folks? My phone is on lollipop stock 5.0 d855 it is rooted.
[G3 Original Android Development] checasey:
when rebooting into recovery the normal way, with flashify and rom toolbox manager in the top left it says secure booting error and below it mentions certificate or something. any help to get past these errors?
[G3 Original Android Development] DE52:
Please read the posts on page 62. They will guide you to the appropriate thread and tell you why you are experiencing this issue. It is always recommended to read the last few pages (and also use the search function at the top of the thread) when you're about to post in a thread to avoid asking questions which have already been asked again. If you have any further questions, make sure you ask after reading the information at the least! (in the thread linked in the posts)

P.S.: not trying to be a smarta** or anything in case you feel I came off that way
[G3 Original Android Development] checasey:
all good i went to kit kat rooted via the script v1.2 and used flashify to install twrp. LG G3 D855 UK

Now I just need to figure out what rom to use. thanks for all the help!!!
[G3 Original Android Development] tuxsg:
TWRP in LG G3 D858HK

Hi,

Just for confirm the TWRP is working on my LG G3 using the stock firmware version D858HK10f but just the version taken for this page:

http://www.droidviews.com/root-lg-g3-on-android-lollipop-and-install-twrp-recovery/

Using the simple method described here, it worked without problems!
[G3 Original Android Development] topet2k12001:
Hi [MENTION=643798]tuxsg[/MENTION],

Great to know. :)

That article actually used my how-to thread as the reference. The picture (with the "Reboot" button) and the YouTube video in that article was from my YouTube account. :D
[G3 Original Android Development] noteespirit:
can somebody please tell me why to bump after root? cant we simply install flashify to install custom recovery?
[G3 Original Android Development] DE52:
Because the boot partition (aka kernel) on lollipop stops you from booting into recovery... so you'll just get an error screen with blue/red LEDs flashing. So, basically we have to bump the lollipop kernel just like we did on kit kat (although on kit kat, the pre-bumped files were given to us, so it was just one install).
[G3 Original Android Development] noteespirit:
Can someone please provide links for better understanding of bump? And pre bumped images or how to bump images?
[G3 Original Android Development] Ragnar:
May I suggest you read the OP and watch the videos and possibly read this thread or at least the first 5 to 10 pages. You can also use Google search and find more information.
[G3 Original Android Development] 6ril1:
Maybe this helps you ?

http://xdaforums.com/showpost.php?p=59882657 (i made it for the G2 but explanations are availables for the g3 too, except the G3 never had JB, so loki doesn't concern G3)

http://xdaforums.com/lg-g2/help/bum...llipop-ota-t3068873/post59806620#post59806620

http://xdaforums.com/lg-g3/general/d855-one-click-root-twrp-recovery-t3072767

http://xdaforums.com/lg-g3/general/apk-flash-twrp-autorec-thanks-to-t3081396

http://xdaforums.com/lg-g3/general/bump-window-version-t2956829
[G3 Original Android Development] noteespirit:
thank you
[G3 Original Android Development] lixxus:
twrp update

Hi guys,

once i have installed the twrp signed bumped image. can i update to the latest 2.8.6 image or does it need to be bumped as well ?

many thanks
[G3 Original Android Development] gpgon:
I updated TWRP without any issues
[G3 Original Android Development] texan_mirage:
It won't work with the new US990 firmware "US99020a". Phone gives a fast boot error and won't get to recovery.
[G3 Original Android Development] crofalcon:
Hi there.

I recently rooted my stock 5.0 lollipop, and following a guide I missed the fact that when I install TWRP it needs to be already bumped, resulting in a red/blue flashing LED when trying to boot into recovery (I can still boot to OS and use the phone as before).

Now I downloaded the bumped recovery from OP (for d855) and did everything as instructed through Terminal Emulator, but I'm still stuck with the same issue when booting into recovery.

Could someone please advise me on what would be the easiest way to get this bumped TWRP working?

Thank you very much in advance!

EDIT: Thanks to the fellow user bender_007, a couple of clicks got me a working TWRP :D

Searched for "d855 autorec" on playstore, installed, and just one click and voila! Perfectly working TWRP.
[G3 Original Android Development] Mistermoleymole:
Tell me more :)

Im in this same situation. Would you be able to tell me what i need to do?

Cheers

MMM
[G3 Original Android Development] bender_007:
Just search 'autorec' on playstore and fingld your version
[G3 Original Android Development] MaximilianPs:
Instead of Recovery, my G3 start in Safe Mode ... HELP ! :(

I've tryed with commands:

adb reboot recovery

but after a bit it will boot in "safe mode"

before bumb I've tryed with Flashify but it faild to upload the TWRP 'cause the certification.

maybe it's 'cause of that :confused:
[G3 Original Android Development] bender_007:
You were on lollipop?
[G3 Original Android Development] MaximilianPs:
I've fixed the problem and installed the recovery with this one one-click-root-twrp-recovery :)

btw. yes I'm in Lollipop
[G3 Original Android Development] falabillio:
I am sorry but I really need help. I have root on my g3 and I have tried to bump twrp every which way but keep getting certification errors. I would beyond belief appreciate some help getting recovery.

---------- Post added at 06:02 AM ---------- Previous post was at 06:02 AM ----------

The model I have is the us990 (us cellular)
[G3 Original Android Development] hrvoje_im:
I used as bender said (mine is d855)
[G3 Original Android Development] falabillio:
I actually messaged him myself and asked he help right away and I will be donating a bit to him! Thanks though, everyone here seems very friendly.
[G3 Original Android Development] Svartsyn333:
The first time I tried this it worked like a charm. Now that I managed to soft brick my D855 and finally brought it back to life via LG flash tool I had to root and bump it again. Root worked fine via Oneklick tool. However, bumping fails, no matter if I use ADB or Flashify. I always end up with an "insecure boot" after reboot and my LED blinking red and blue. I'm on Stock D20H firmware and tried to use TWRP 2.8.0.0. Do I have to downgrade to KitKat again to unlock the bootloader or is there already a version for Lollipop and I'm just blind as hell?
[G3 Original Android Development] bender_007:
Look few posts up
[G3 Original Android Development] Svartsyn333:
Oh my, I normally really read at least three pages back but missed it this time. My apologies! And thank you, i'll try that. :)
[G3 Original Android Development] Svartsyn333:
Edit: worked like a charm, thank you so much! Two clicks and it was done. I'm totally amazed! :)
[G3 Original Android Development] bender_007:
:) you're welcome
[G3 Original Android Development] Arthurvben:
Can you flash the following ROMs with this BUMP'd TWRP??

AOSPA: http://get.aospa.co/legacy/d855

Cyanogenmod 12.1: http://download.cyanogenmod.org/?device=d855

Planning to buy the D855 international version, root it with Stump and then flash the TWRP image in flashify. The links where the roms are for downlaod do not say if they have been bump'd or not so Im not sure...

Thnx in advantage for helping me out :D
[G3 Original Android Development] m1trand1r:
Yes you can...in fact you can flash anything after you flash bumped TWRP...;)

/LG-G3/d-855/16Gb/Titanium Black/
[G3 Original Android Development] adeelajmal:
is it a network unock? or just bumped for twrp recovery
[G3 Original Android Development] bender_007:
The second one ofc

Poslano sa mog LG-D802 koristeći Tapatalk
[G3 Original Android Development] zeletrik:
Hey Guys!

If my G3 already has TWRP bumped.. How can I update the recovery to newer TWRP?

Simply flash the image from recovery?
[G3 Original Android Development] gpgon:
https://play.google.com/store/apps/details?id=com.jmz.soft.twrpmanager
[G3 Original Android Development] RapHaeL_4_4_4_:
I have a D852G and I need to do a battery trick to boot my phone (Remove battery, plug in my computer, put the battery back, unplug from my computer) and its anoying...

Anyone else got something like this? I tried many times and I have always the same result.

Thanks!

PS: Yes i'm on kitkat.
[G3 Original Android Development] Dene_Bluesman:
Try it without plugging into the computer, takes a couple tries sometimes
[G3 Original Android Development] RapHaeL_4_4_4_:
I tried like 20 time, I don't know why it won't boot :crying:
[G3 Original Android Development] mrgian:
TWRP for F400 also compatible for F400k or no?
[G3 Original Android Development] bender_007:
Yes it is. Which one do you need? And for what android?
[G3 Original Android Development] mo120697:
what if i want to get G3 to repair? is it enough to flash stock rom again and bootloader is "locked" again?
[G3 Original Android Development] AndroidGuy78:
I have the LG G3. I really want to try this. But my version, as990, is not listed. Any ideas? I did read the first few posts...just stumped.
[G3 Original Android Development] RapHaeL_4_4_4_:
Flash the kdz
[G3 Original Android Development] AndroidGuy78:
Please