Hi there I created this thread for the people who have a hard time with their lg g3 f400L
I know this issue is kinda late in 2021 but I hope I can still help someone.
So lets start
I'M NOT RESPONSIBLE FOR ANY BRICKED DEVICE! YOU HAVE BEEN WARNED
I just want to share this for those who have F400L specific device!
There are many problems that I faced when trying to load a custom rom android 11 in my device I always get the error of boot certificate error or something or the twrp doesnt recognize my phone as f400L when trying to load a android 11 custom rom because it needs to have the latest twrp in order for it to continue the installation of the rom. Tried every single Official TWRP and nothing seems to work so I tried using unofficial TWRP.
So this is my solution
1. Restore to kitkat.tot the name of the file is this "LGF400LAT-00-V10a-LGU-KR-MAY-18-2014-0" for f400L use LGUP for this (I haven't tried using lollipop for marshmallow it's a nono I get the MISMATCH SIG LEN error)
2. root using purple drake lite
3. once rooted install twrp using the bumped! the method in xda "twrp-2.8.0.0_f400-signed.img" using flashify or any other method you want.
4. download "flashable-twrp-3.3.1-20200315-f400-themed.zip" from "https://forum.xda-developers.com/t/recovery-3-3-1-abandoned-twrp-for-lg-g3.3813552/" scroll down to the download section and click the "MEGA (recommended)" link there you can find the zip file
5. once downloaded put it in your sd card boot to twrp and locate and install the "flashable-twrp-3.3.1-20200315-f400-themed.zip"
6. once installed reboot to your recovery using twrp
7. if it boots to a black screen remove the battery and try to access your recovery mode
8. if it boots to recovery then you are good to go! (F400L method of recovery is holding Volume down + Power button once LG logo appear let go of the button and immediately press the volume up + volume down button and a factory reset image will appear just press yes and yes and now it will boot to a red twrp)
PS: my lg g3 F400L is kinda tricky to boot to recovery so in order for the buttons to work I press it to the edge as hard as I can, if your lg g3 is like mine send me a message I will help you.
9. In twrp wipe system, cache, data, dalvik cache
10. install any android 11 rom or lineageOS rom
11. install android 11 gapps
12. wipe cache and dalvik cache
13. reboot!
And wait for it to load up mine takes about 10 mins or so.
I just want to thank :
HardStyl3r
I didn't know that the answer to all of my problems is only his unofficial twrp! The unofficial twrp is abandoned so I hope anyone out there can update it.
Thanks
Thanks for your detailed tutorial!
It works on my LG G3 F400s (after installed twrp 2.8.0.0 it became typical F400)! And I can have a taste of Android 11 on my g3 finally.
I follow all your steps expect step one. (My phone was still Android 4.4.2)
For those whose devices are different from F400l can follow all the steps expect changing the file (.tot) from f400l to like f400s or k at step one.
Thanks
Related
If you are stuck in boot loop or you just have the LG logo showing on the screen with green LED then I have one solution for you to try out before giving up on the Great G2.(Works for just LG G2 LS980)
Prerequisite files :
1. TWRP recovery (or CWM)
2. ZV8 radio file ("lgls980_zv8_radi0.zip" google it)
3. Cyanogenmod 11 zip file ( worked for me, any other roms might work may be )
I got myself soft bricked when i flashed a modded camera app file on a custom G3 rom for G2. The phone was booting up but nothing happened after LG logo.
The actions which lead to soft brick:
1. Installation of Kitkat baseband for LS980
2. Inatallation of G3 ported rom
3. Flashing of Moddedcamera app via zip
If you are also ended up in bootloop after similar steps then this method will 99.99% should work for you.
In other cases give it a try as CM11 is very safe rom and also zv8 flash is required to make CM11 to work.
The solution I tried out unsuccessfully were,
1. Clear dalvik /cache (using recovery) and reboot
2. Get into recovery and flash Stock backup (Stock 4.2.2) from TWRP
3. Flash Cyanogenmod Nightly after clearing dalvik, cache, system and data. (NEVER WIPE INTERNAL STORAGE in G2)
4. Flash the Custom G3 ported rom again.
all of this failed and I was still either stuck at LG logo or bootloop and then I realized I had ZV8 radio file on my phone and I thought of giving it a try.
Steps I did and that worked for me:
1. I did full wipe :dalvik+cache+data+system (NO INTERNAL STORAGE)
2. I flashed Cyanogenmod 11
3. Flashed ZV8 radio
4. Reboot and it gave the big CM logo for a minute and booted up nicely.
I think the problem was with flashing of Kitkat baseband (one of the steps in flashing G3 ported rom on G2) it might have messed up something for Cyanogenmod not to work and flashing ZV8 fixed it for CM 11.
Hope this info help some G2 owners and save few G2's from turning into a brick.
Even if this does not work for you there are few ways to go back to "stock firmware" those might help you out.
Can you pls tell if your Sprint LS980 is working with any local GSM with mobile data after flashing CyanogenMod 11 & ZV8 radio?
skybluedream said:
Can you pls tell if your Sprint LS980 is working with any local GSM with mobile data after flashing CyanogenMod 11 & ZV8 radio?
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Click to collapse
i have the same setup i will throw my brothers at&t sim in and see. that will be later this evening. but i believe it might still need to be unlocked
Hello first like to know how my lollipop android 5.0.2 is using as much internal memory, I had a problem when updated pro lollipop and turned pro kit kat had a semibrick doing so managed to solve update recovery tool for lg think put the rom of stock V400 now I'm with lollipop with root, however I wonder if they could help me with this problem, already tried everything and he just has factory recovery already tried to install other recovery and nothing clockworldmod, I wonder if anyone knows where I can find the kit kat Brazilian version 4.4.2 :crying:
current version 5.0.2 lollipop
kernel 3.4.0+
v70020a software
and my tab have 16 storage internal and this is what my pc see from this. only 3.89gb ??? i have 16gb how this appened?
if it is not possible someone direct me to another stock rom like to know if they can help me with this problem of internal memory
thank you all.
Get a kdz file:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=PUT_Your_CSN_HERE
After that in the sw version section, copy the link and paste it on ur browse, the download will start with the latest rom for ur device.
Flash it using lgflashtools 2014.
After, go to recovery and wipe data
Hope it gets fixed
system data and error boot certification verify
Still the same huge system data and no acess, only way is cwm reboot and use adb or fastboot but my system v700 only have factory reset and a try cwm or twpr and show me this error in boot error boot certification verify. Ane idea???
KakazimBR said:
Still the same huge system data and no acess, only way is cwm reboot and use adb or fastboot but my system v700 only have factory reset and a try cwm or twpr and show me this error in boot error boot certification verify. Ane idea???
Click to expand...
Click to collapse
There is no custom recovery for the v700.
U gotta find a way to format the system
First of all, I had a LG G3 (D855) with cyanogenmod 13 on it.
Since my twrp didn't work and i had a pretty old cm13 version on my G3, I wanted to flash twrp again and I used the AutoRec apk from this post (http://forum.xda-developers.com/lg-g3/general/root-twrp-marshmallow-d855-30b-t3286268), because I couldn't flash anything in my old twrp.
After flashing the new twrp, my G3 could only boot into the twrp recovery, so I searched for a solution and fount this post: http://forum.xda-developers.com/lg-g3/development/fix-stuck-custom-recovery-trying-ota-t2907508
I did everything like the guy said in the post and it didn't work, so I used the last command in his post. After trying to boot into sytem it didn't work, but this time I got into the "cyanogenmod recovery" in which im stuck now.
So the first thing I did in cm recovery was looking for the possibility to flash an image, which just isn't there. So I tried flashing the newest cm13 nightly through the "Apply update" option in the cm recovery, which didn't work because I needed Baseband version 21C.
After that I obviously tried to flash Baseband 21C, which again didn't work, because the footer is wrong.
So I surfed through the internet, when I had to notice, that ADB (and fastboot) doesn't work in cyanogenmod.
Now I'm stuck here with this ****ty cyanogenmod recovery, where I can do nothing.
I hope that anyone of you can help me with this problem
Can't you go back to stock with a KDZ flash? Just boot into download mode.
A similar thing happened to me, but it was a TWRP boot loop. I tried the LGUP flash of a .kdz file, but that failed, so then I tried an earlier version of Android using LG Flash Tool 2014 and it was fine after that. Then I just updated to latest stock Android and rooted with Kingroot. Can you at least boot into download mode? (power off while not connected to PC, then press vol up I think at the same time as plug in USB cable).
Edit:
I installed some LG Drivers from a root article and now the phone is recognized. I can update to V20G and test it again, hope it works!
Hello!
I was running CM14.1 on my LG G4 and a few days ago I decided to install a new update but from within the phone itself. Sadly, it just rebooted to the recovery and didn't install anything. And from there, it always rebooted into the recovery no matter what I did. I also did a full wipe and installed CM14.1 clean but it still rebooted to the recovery and didn't want to go past that. I made a Reddid thread - https://www.reddit.com/r/cyanogenmod/comments/5gcap3/g4_h815_cm_141_help_i_cant_boot_outside_of/.
So I got help with that - I got into Download Mode and flashed the stock software via LGUP. Sadly, after I did this, I can no longer install a custom recovery. The phone is not rooted and LGUP and LG Bridge don't recognize the device anymore and the phone says there isn't a new update available but it's on the 5.1 stock ROM.
Whenever I flash the TWRP image via fastboot and I reboot into recovery, it doesn't boot into TWRP but it boots into some kind of other fastboot mode. And I've tried to issue `fastboot boot twrp-x-x-x.img` but it fails to do so and shows `FAILED (remote: dtb not found)`.
Is there a way to fix this so I can flash CM again?
Thanks in advance!
Peshyy said:
Hello!
I was running CM14.1 on my LG G4 and a few days ago I decided to install a new update but from within the phone itself. Sadly, it just rebooted to the recovery and didn't install anything. And from there, it always rebooted into the recovery no matter what I did. I also did a full wipe and installed CM14.1 clean but it still rebooted to the recovery and didn't want to go past that. I made a Reddid thread - https://www.reddit.com/r/cyanogenmod/comments/5gcap3/g4_h815_cm_141_help_i_cant_boot_outside_of/.
So I got help with that - I got into Download Mode and flashed the stock software via LGUP. Sadly, after I did this, I can no longer install a custom recovery. The phone is not rooted and LGUP and LG Bridge don't recognize the device anymore and the phone says there isn't a new update available but it's on the 5.1 stock ROM.
Whenever I flash the TWRP image via fastboot and I reboot into recovery, it doesn't boot into TWRP but it boots into some kind of other fastboot mode. And I've tried to issue `fastboot boot twrp-x-x-x.img` but it fails to do so and shows `FAILED (remote: dtb not found)`.
Is there a way to fix this so I can flash CM again?
Thanks in advance!
Click to expand...
Click to collapse
The bootloop to recovery is a known issue of one the December nightlies of CM 14. Head over to the CM thread and search for bootloop and twrp. They provided a solution to solve this too.
Besides that: which twrp version do you tried to fastboot? H811 or h815? Taken from the official download site?
.
steadfasterX said:
The bootloop to recovery is a known issue of one the December nightlies of CM 14. Head over to the CM thread and search for bootloop and twrp. They provided a solution to solve this too.
Besides that: which twrp version do you tried to fastboot? H811 or h815? Taken from the official download site?
.
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Click to collapse
twrp-3.0.2-1-h815.img, H815 as the title says and from the official website as I've always done. As for the thread - I don't have TWRP and I can't even flash it as I've written in my post. That's what I'm struggling with.
Edit:
I installed some LG Drivers from a root article and now the phone is recognized. I can update to V20G and test it again, hope it works!
I have an old G4 I need to use as a backup device. It's currently rooted and ROM'd with Resurrection Remix, but I'd like to return it to the stock firmware. I have the KDZ and LG Flash Tool, but I can't get into download mode. Every time I try, whether it's the volume up+USB combo, or adb reboot download, it just boots normally into the OS. I can boot into TWRP fine as well. Just not download mode.
Is there any way to fix this, or am I stuck with Resurrection Remix forever?
Thanks
detection said:
I have an old G4 I need to use as a backup device. It's currently rooted and ROM'd with Resurrection Remix, but I'd like to return it to the stock firmware. I have the KDZ and LG Flash Tool, but I can't get into download mode. Every time I try, whether it's the volume up+USB combo, or adb reboot download, it just boots normally into the OS. I can boot into TWRP fine as well. Just not download mode.
Is there any way to fix this, or am I stuck with Resurrection Remix forever?
Thanks
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Click to collapse
I had nearly the Same issue with the Imperium Rom. So i set all on one Card. I booted into TWRP and go into Wipe, advanced Wipe. Here i checked all options, Cache, Data, Davlik, System. After that i reboot into System but goes wrong, off course i deleted the System in the advanced Wipe. Now i was able to go into the DL mode and flashed via LGup the MM kdz File via Refurbish in the LGup Tab.
Should help you too.
Foto ....
detection said:
I have an old G4 I need to use as a backup device. It's currently rooted and ROM'd with Resurrection Remix, but I'd like to return it to the stock firmware. I have the KDZ and LG Flash Tool, but I can't get into download mode. Every time I try, whether it's the volume up+USB combo, or adb reboot download, it just boots normally into the OS. I can boot into TWRP fine as well. Just not download mode.
Is there any way to fix this, or am I stuck with Resurrection Remix forever?
Thanks
Click to expand...
Click to collapse
You can always flash the stock image using TWRP. The Nougat Stock Image is found here: https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860 . Just follow the instructions and move the file over to the phone while in TWRP recovery.
ThatPcGuy said:
You can always flash the stock image using TWRP. The Nougat Stock Image is found here: https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860 . Just follow the instructions and move the file over to the phone while in TWRP recovery.
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Click to collapse
You don't know which model he has and that nougat you are referring to does not work on all 11 g4 models and could even further brick his device.
Formatting system should be enough to get download mode back in his case.
Sent from my LG-H815 using XDA Labs