JB broken download mode - TWRP works - G2 Q&A, Help & Troubleshooting

Could use some help/advice.
I restored the kdz using the lg flashtool to jellybean. I didn't update directly kitkat. Instead, I used towelroot to root, then I used autorec to install twrp 2.7.0.0 (or whatever it was). I then flashed twrp 2.8.5.1 and I flashed CM12. CM12 doesn't boot at all.--stuck at LG logo. If I try to use download mode to reflash kdz, it doesn't detect the phone. I can access phone in TWRP via ADB. and it detects it. Is there a way to restore the download mode to detect the phone.? I think this mess happened b/c I didn't update to kitkat and the partitions didn't get updated, but I'm not sure.
Any advice to either get download mode working again from within TWRP, or get CM12 working would be appreciated.
Thank You

zipeee2 said:
Could use some help/advice.
I restored the kdz using the lg flashtool to jellybean. I didn't update directly kitkat. Instead, I used towelroot to root, then I used autorec to install twrp 2.7.0.0 (or whatever it was). I then flashed twrp 2.8.5.1 and I flashed CM12. CM12 doesn't boot at all.--stuck at LG logo. If I try to use download mode to reflash kdz, it doesn't detect the phone. I can access phone in TWRP via ADB. and it detects it. Is there a way to restore the download mode to detect the phone.? I think this mess happened b/c I didn't update to kitkat and the partitions didn't get updated, but I'm not sure.
Any advice to either get download mode working again from within TWRP, or get CM12 working would be appreciated.
Thank You
Click to expand...
Click to collapse
You need to install the kk bootstack for your device and wipe data.
Sent from my LG-VS980 using XDA Free mobile app

Related

[Q] Pushing TWRP to LG G2

I have the Verizon version of the LG G2 and when I received the device, it was already loaded with 12B firmware. I was able to root the device with ioroot16, install SuperSU, all that jazz... I'm under the impression that I need to use loki flash to flash TWRP onto my device, but when I try to do this through ADB, I get an error saying that my device has a Read-only filesystem. Is there some step that I'm missing in this process? Is loki flash the only way to get TWRP onto my device? or is there some other way?
You can use freegee from the playstore to install a supported recovery easily.
http://forum.xda-developers.com/showthread.php?p=48969786
Shelnutt2 said:
You can use freegee from the playstore to install a supported recovery easily.
Click to expand...
Click to collapse
Thanks! Worked flawlessly :good:
Same here worked perfectly

Unrooted, can't reroot, corrupted recovery on 4.4.2

Hi all,
I have put myself/phone in an interesting situation, which I am hoping the community can help me with.
I recently bought an LG G2, dold with stock 4.4.2. I proceeded to root it, and tried installing custom recovery.
I first installed ROM manager, which didnt work.
I then tried flashing twrp through adb using loki, which gave me a 'this is not a loki file' error.
I eventually realized that they had closed the Loki loophole in stock 4.4.2.
At this point, trying to enter recovery wouls give me a 'secure booting failed' error, making me have to reboot the phone again.
I then unrooted my phone, and factory reset it. I realized Clockworkmod recovery (which ROM manager installed) persisted despite the data wipe, so I unchecked that option in ROM manager and wiped it again.
My thinking was that I vould now downgrade to 4.2.2, install custom recovery there, then flash 4.4.2 whitout losing root or recovery.
Problem: I can't do any of this, because I can't reroot my phone with ioroot25. It fails as when it reboots inti recovery it gives me the 'secure booting failed' error.
Thanks for any help. I simply want to root my phone and if possible, have a functional recovery in order for me to flash some mods. At least being able to have it rooted again would be sweet.
Hehh...
Last thing you can do is try to flash with LG Flash Tools Method or LG Support Tool
Flash stock recovery either via fastboot / or dd(on linux). Then you can proceed further.
Or ^ kdz via download mode.
I have a similar problem. I restored the stock recovery via adb using a dd command. Then I unrooted in order to accept the latest OTA. The OTA fails with a "suspected root" error. Download mode still has "ROOTED" in red letters. At this point I gave up on the OTA and wanted to get back to where I was.
IOROOT25 doesn't work because when the phone reboots to recovery mode, I get the broken android with the red triangle but nothing else on the screen at all. There are no options, nothing. Eventually it reboots. I've done a factory reset to no avail. Recovery seems corrupted.
I need instructions for flashing the stock recovery with no root.
I managed to get my recovery rewritten using the LG Mobile Support Tool on a different computer. Then I was able to root again using ioroot25. I'm not sure why I couldn't run on my own laptop, but it's fixed now.

[Q] What is the correct way to install TWRP on the LG G2 in 2015?

Hello,
sometimes I am reading that some users are installing TWRP via AutoRec.
But sometimes I am also reading that some users install Bump!ed versions of TWRP by simply flashing it directly via Flashify for example.
Are there any advantages/disadvantages comparing those methods?
Or would both give the same results?
What is currently considered the best way to install TWRP on the LG G2 when TWRP has not been installed yet?
Regards
wq0913562 said:
Hello,
sometimes I am reading that some users are installing TWRP via AutoRec.
But sometimes I am also reading that some users install Bump!ed versions of TWRP by simply flashing it directly via Flashify for example.
Are there any advantages/disadvantages comparing those methods?
Or would both give the same results?
What is currently considered the best way to install TWRP on the LG G2 when TWRP has not been installed yet?
Regards
Click to expand...
Click to collapse
It depends on the roms you will be using, if you're going to use a bumped ROM then using the latest stock base and flashing twrp though flashify is the cleanest method, but if the ROM you're using isn't bumped you need the jelly bean bootloader and thus should use autorec. Note that you can install bumped ROMs on the jelly bean bootloader but you CAN NOT install non bumped ROMs on the kitkat bootloader. If you are using a bumped setup and flash a non bumped ROM, it will boot loop. If you don't have a BUMPED ROM still on your storage, you will need to factory reset through download mode or fastboot (whichever you have, some flashable bootstacks purposefully break download mode to enable fastboot. I personally prefer download mode, if I can't get to an adb prompt I'd rather just flash a kdz).
wq0913562 said:
Hello,
sometimes I am reading that some users are installing TWRP via AutoRec.
But sometimes I am also reading that some users install Bump!ed versions of TWRP by simply flashing it directly via Flashify for example.
Are there any advantages/disadvantages comparing those methods?
Or would both give the same results?
What is currently considered the best way to install TWRP on the LG G2 when TWRP has not been installed yet?
Regards
Click to expand...
Click to collapse
Hey wq.
I very recently installed AutoRec on my D802, which has the latest 4.4.2 KK. It works flawlessly, and I recommend it. I believe the .apk installs TWRP 2.7.0.0, which has worked for me very well, and I have installed at least 15 different ROMs with it so far.
Hello,
thank you very much for your fast and detailed answers.
So, let's assume someone uses AutoRec to install TWRP for the first time on a LG G2, which only installs an old version of TWRP (version 2.7.0.0).
Which TWRP version should one then use to update to the latest version of TWRP?
Would you use the blastagator version from over there:
http://forum.xda-developers.com/lg-g2/development/twrp-twrp-2-8-0-0-kernel-f2fs-tools-t2898705
Or would you use the official version from over there:
http://teamw.in/project/twrp2/197
And how would you install it?
By simply booting into TWRP 2.7.0.0 (provided by AutoRec) and then from there flashing the latest TWRP zip file?
Regards
wq0913562 said:
Hello,
thank you very much for your fast and detailed answers.
So, let's assume someone uses AutoRec to install TWRP for the first time on a LG G2, which only installs an old version of TWRP (version 2.7.0.0).
Which TWRP version should one then use to update to the latest version of TWRP?
Would you use the blastagator version from over there:
http://forum.xda-developers.com/lg-g2/development/twrp-twrp-2-8-0-0-kernel-f2fs-tools-t2898705
Or would you use the official version from over there:
http://teamw.in/project/twrp2/197
And how would you install it?
By simply booting into TWRP 2.7.0.0 (provided by AutoRec) and then from there flashing the latest TWRP zip file?
Regards
Click to expand...
Click to collapse
I wanted to flash cloudy rom which is bumped.
So i straight away used flashify to flash bumped recovery and then flashed the rom..
No autorec needed.
I flashed blastgator's twrp with thermal control.

[Q] My G2 is in trouble

So, I have a LG G2 D805 (Latin America Version), I installed the D802 5.0.2 (adapted by a brazilian dev, of course). At first I had root, but I removed it from Supersu cause I wanted use One Click Root Recovery to make root and install TWRP at once. There begins the ****...
One Click Root Recovery and SRK Tool doesn't work... it ever stop on download mode. And it gets worse, because FlashTools don't accepted the flash (it says the device has been disconnected).
So, I dont have root, TWRP or Download Mode. The only solution would be an app like towelroot to make root and after install TWRP with Autorec LP.
Anyone have any suggestions?
Resolved!
I just use FlashTools with device on.
InsideMuz said:
So, I have a LG G2 D805 (Latin America Version), I installed the D802 5.0.2 (adapted by a brazilian dev, of course). At first I had root, but I removed it from Supersu cause I wanted use One Click Root Recovery to make root and install TWRP at once. There begins the ****...
One Click Root Recovery and SRK Tool doesn't work... it ever stop on download mode. And it gets worse, because FlashTools don't accepted the flash (it says the device has been disconnected).
So, I dont have root, TWRP or Download Mode. The only solution would be an app like towelroot to make root and after install TWRP with Autorec LP.
Anyone have any suggestions?
Click to expand...
Click to collapse
I would simply :
Download Stump Root, run it (the device will reboot twice)
AutoRec it
Install desired recovery
Enjoy

TWRP Install help needed - "Critical Error" instead of recovery mode

Hi,
I have rooted G2 802 International version, with stock ROM V30B.
Now I try to install TWRP there.
Tried multiple image versions, including from TWRP download site,
last one from here http://techerrata.com/file/twrp2/g2d802/openrecovery-twrp-2.8.5.0-d802.zip
Installed through adb shell,
Code:
dd if=/data/local/tmp/recovery.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
When I try to enter recovery mode I get a brief "Critical Error" message (in text mode), then promp to choose whether to reboot or enter download mode. No TWRP.
Any ideas ?
You're on LP bootloader which does not allow you boot custom kernel (locked bootloader). Downgrade to KitKat bootloader, custom recoveries and kernels are BUMPED (signed), and KK bootloader thinking these images are official, will pass it to boot.
Use AutoRec for LP from Google Play, it will do everything by one click. Because after flashing KK bootloader, official kernel of Lollipop cannot be booted too as i remember. Anyway AutoRec app will downgrade bootloader, flashes recovery TWRP and modded official kernel image, so will do everything you need.
AutoRec, you had one job...
PolishVodka said:
You're on LP bootloader which does not allow you boot custom kernel (locked bootloader). Downgrade to KitKat bootloader, custom recoveries and kernels are BUMPED (signed), and KK bootloader thinking these images are official, will pass it to boot.
Use AutoRec for LP from Google Play, it will do everything by one click. Because after flashing KK bootloader, official kernel of Lollipop cannot be booted too as i remember. Anyway AutoRec app will downgrade bootloader, flashes recovery TWRP and modded official kernel image, so will do everything you need.
Click to expand...
Click to collapse
AutoRec seems not to work. I installed the VS980 version for the Verizon variant of the phone, but all the app has is a picture of lollipops. Tapping the one at the bottom restores my (corrupted) backup, while tapping the one at the top does absolutely nothing. Any ideas?
UPDATE (8:42PM) -
Figured it out! In the SuperSU app, I disabled "mount namespace separation" and "tapjacking protection" before rebooting and trying AutoRec one more time. This enabled the hidden install button behind the lollipop icon in the app and allowed TWRP to be installed instantly. Hooray!
Hi, I tried to install TWRP using Autorec. But my phone stuck on fastboot mode. although the phone said it is d802 varient after I remove the back it says ls 980. I can run fstboot commands but not adb. Itried 5 different computers with win7/8/10. No good results. worse case is, no download mode at all. So I can not flash the phone. I tried to flash TWRP using fastboot but nothing changed. Can some one please help me

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