G3 D855 Download Mode Problem - G3 Q&A, Help & Troubleshooting

Hello all,
I have downloaded CM 12.1(Lollipop 5.1 09-10-2015) to install. Then I tried recovery mode, got secure boot error. I don't remember the page, but from here in xda, I found some solution, which I entered some codes to code terminal involving aboot.img. Somehow it worked and I used TWRP to install CM 12.1. It works fine.
Then I wanted to go back to stock, downloaded LGFlashTool. Problem starts here. When I tried to enter download mode(volume up) it installed the driver to pc. Then my phone went to download mode, but on top of the screen there was "Secure boot error" message. I looked into driver installing at first and it was qhsusb_bulk.
I have searched on xda and over the internet then, but I didn't find a solution. All the solutions for completely gone G3s.
To sum up, my problem is I can't go back to stock ROM because of the secure boot error in download mode. TWRP recovery works, I can use my phone with CM 12.1 Nightlies Android 5.1 but I can't go back to stock ROM since download mode is not working(secure boot error). I have .kdz file, and now downloading 2.1 GB tot file(not sure where to use). I also have bootdiag, which may be a solution.
I really want to fix it and go back to stock. Any help appreciated.
Thanks in advance!

Related

[Q] HELP! accidentally wiped ENTIRE phone including OS while using TWRP, any save????

I accidentally checked the box that I was not supposed to, now I can't boot up but I can access download mode, when I tried to use LGFlashTool it says it can't change to download mode, but I am in download mode
any help please?
LG G3 D855 32gb
Tried to get into TWRP, it promotes me into firmware update
Firmware update always returns "can't change to download mode" I'm on a windows 8.1 desktop, however I did a stock recovery on it before...
weibro1 said:
I accidentally checked the box that I was not supposed to, now I can't boot up but I can access download mode, when I tried to use LGFlashTool it says it can't change to download mode, but I am in download mode
any help please?
LG G3 D855 32gb
Tried to get into TWRP, it promotes me into firmware update
Firmware update always returns "can't change to download mode" I'm on a windows 8.1 desktop, however I did a stock recovery on it before...
Click to expand...
Click to collapse
You were supposed to make a full backup using TWRP beforehand. If you didn't you'll have to flash a custom ROM. You can find the stock ROM I'm sure, but I would highly recommend Cyanogenmod. It's way better than the stock ROM. If you want the stock ROM I wish you luck because I have no idea where to find it.
Here's a link to Cyanogenmod:
http://download.cyanogenmod.org/?device=d855
Download it, transfer it to your phone, boot into TWRP, hit install, find the file, and swipe to flash. You'll then be taken into setup as if you just got a brand new phone.
PS Root is disabled by default in cyanogenmod. Access the developer options, and enable it. This ROM updates frequently, so you'll be sure there's plenty of support!
Good luck! If you have any questions feel free to message me!
Edit: After this is installed, navigate back to TWRP and hit backup and do a full backup, then transfer it to your computer so you'll always have a backup just in case you mess up. You'll need a backup if you ever accidentally brick your phone.

HELP! Fully wiped. Only Recovery mode is possible. Help me flash a stable ROM.

What I've done:
1. Tried LGNPST method but phone never showed up in the software
2. Tried flashing with LG official tool. That always resulted phone disconnected.[I did put my phone into download mode]
3.Tried almost all KDZ_FW_UPDATE methods they always stopped either in not responding-> close program OR extraction error
4. Tried sideloading using adb but they also resulted in "bad file" even push didn't work saying no permission to write(I think)
for adb I tried converted .zip of kdz using some guide in xda.
My phone is totally clean now. I can boot to Recovery or Download Mode. There's no file that's flashable right now. I'm in Philz touch recovery
This actually happened while I was flashing to unlock bootloader and charge went low.
I desperately want it to function properly. Please anyone with any new or updated methods, help me.
When normally trying to boot up, Google logo comes and phone switches off.
I was in F180L converted to E975.
I've INDIAN(20a) version kdz also european(10h) and korean(30e).

Today's CM14 bricked my H815 (no bootloader, no fastboot, no recovery)

Hi,
My H815 always suffered from this problem: http://forum.xda-developers.com/g4/help/fastboot-download-mode-problem-t3466649 - the only way I could have fastboot was from an adb shell.
Well, that was not a problem until today: CM14's nightly broke (booting just loops at the moving logo) and now I have no way to go back to fastboot. And if I try the recovery mode, I just have a blurry circle saying "erasing" for a few seconds, then a looping CM logo.
Anyone has a way out of this mess ?
bestouff said:
Hi,
My H815 always suffered from this problem: http://forum.xda-developers.com/g4/help/fastboot-download-mode-problem-t3466649 - the only way I could have fastboot was from an adb shell.
Well, that was not a problem until today: CM14's nightly broke (booting just loops at the moving logo) and now I have no way to go back to fastboot. And if I try the recovery mode, I just have a blurry circle saying "erasing" for a few seconds, then a looping CM logo.
Anyone has a way out of this mess ?
Click to expand...
Click to collapse
When you say you try the recovery mode how do you try to get into it? Btw do you have twrp installed?
Same thing happened to me, tried to install, just got put straight back in to TWRP after boot. Tried installing a stock ROM, CM ROM & using LG Bridge to recover, to no avail. Help appreciated, (i'm assuming LGUP is going to come up a lot)
Tycoon282 said:
Same thing happened to me, tried to install, just got put straight back in to TWRP after boot. Tried installing a stock ROM, CM ROM & using LG Bridge to recover, to no avail. Help appreciated, (i'm assuming LGUP is going to come up a lot)
Click to expand...
Click to collapse
The OP has another issue pls do not hijack.
steadfasterX said:
The OP has another issue pls do not hijack.
Click to expand...
Click to collapse
Sorry, it's nearly the same issue though, CM14.1 broke phones today.
Today's update broke mine as well. Looking for solutions. Will follow your thread and progress.
Same for me. Tried download mode with lgup to flash stock which worked once - but I kind of bricked it again by trying to install cm14.1 again. Then i tried to go back to stock using lgup again, but now lgup it just crashes. The phone now goes automatically to download mode after turning it on, the progress bar stays at 0%, the phone says "633A B100" and lgup crashes after 9% "prepare dlmode" or something similar. any ideas? :/
Some people seem to have fixed this issue by flashing the official Cyanogenmod Recovery.
thewild said:
Some people seem to have fixed this issue by flashing the official Cyanogenmod Recovery.
Click to expand...
Click to collapse
After flashig the CM Recovery via TWRP, i can't use the recovery anymore. If i boot into CM-Recovery the display shows "Ereasing" and start the system. After that i got a bootloop.
Is it possible to use fastboot??
You guys should also check CM14.1 thread because people there are talking about the same problem. The latest post says the only solution was to flash an official kdz with LGUP.
thewild said:
You guys should also check CM14.1 thread because people there are talking about the same problem. The latest post says the only solution was to flash an official kdz with LGUP.
Click to expand...
Click to collapse
Did that. Worked once. Then i tried to flash cm again and had the same problems, so i wanted to flash stock again... now lgup crashes at 9% and the phones goes directly to download mode after turning it on.
onlyolli said:
Did that. Worked once. Then i tried to flash cm again and had the same problems, so i wanted to flash stock again... now lgup crashes at 9% and the phones goes directly to download mode after turning it on.
Click to expand...
Click to collapse
And the two times you tried to flash CM, that was with the same recovery ?
Can you go into fastboot mode ?
thewild said:
And the two times you tried to flash CM, that was with the same recovery ?
Can you go into fastboot mode ?
Click to expand...
Click to collapse
Yes, it was with cm recovery 20161130, if i remember correctly.
Sadly now, i can not go into fastboot. The phone goes directly into download mode. My windows vm detects the phone, and tries to flash a recent kdz, but lgup crashes at 9%. The phone still shows "0%".
Oh that's bad. What about another kdz ?
thewild said:
Oh that's bad. What about another kdz ?
Click to expand...
Click to collapse
Already tried like 3-4.... Its always the same. If the tool would at least give me a little bit more information, but it just stops.
I don't know then. Some users seem to have had the same problem (stuck at 9%) : http://forum.xda-developers.com/search/forum/4233?query=lgup 9%
I had the same issue, tried several things, my final solution was:
- Start in download mode (Volumen up and then plug in cable)
- use "LG Brigde" on Mac to install stock Rom ( Software update tab in APP ) guess should also work with Windows
- Boot original android
- enable usb debug
- Start bootloader via ADB
- fastboot flash recovery to twrp 3.0.2
- Boot in recovery via power and vol down (first factory reset from stock appears but after this twrp is starting)
- install cm nighty of 1 DEC via ADB sideload
- reboot and done
In the meantime i updated to twrp 3.0.2-1., installed gapps etc. everything is now working fine again.
Hope this is also working for you.
Which version of cm14 did u download and install? Can u please post the exact version?
Mmh ... LGUP is the Windows utility right ? How do I do if I only have a Linux machine ?
steadfasterX said:
When you say you try the recovery mode how do you try to get into it? Btw do you have twrp installed?
Click to expand...
Click to collapse
I'm trying to get to it via power+down, I get to the double "do you want to factory reset ?" question, but then :
- sometimes the CM recovery just says "erasing" for a few seconds and reboots to (non-working) CM
- sometimes it just plainly boots to (non-working) CM
I used to have TWRP installed but it didn't work with CM update, so I let CM install its own recovery.

TWRP BOOT LOOP has anyone found a solution (OTA update)

i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
[SOLVED]
went back to stock recovery and side loaded the full 1.4 gb rom i will leave a link for tutorial that i used, i wanted to get back to complete stock and this was the one use
"https://forums.oneplus.net/threads/guide-how-to-unroot-your-oneplus-3-and-go-back-completely-to-stock.456232/"
When you have TWRP you have to install full zip, not simply the eval OTA zip
bob_cheeseman5 said:
i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
Click to expand...
Click to collapse
Flash the stock recovery.
Get stock recovery from downloads.oneplus.net
I cant seem to flash the stock recovery. The device is not visible in adb devices or fastboot devices. im facing the same issue.
If you are using TWRP 3.0.4-0 - try a hard boot...hold down the power button for 20s...wait 20s, power it back on.
bob_cheeseman5 said:
i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
Click to expand...
Click to collapse
easy solution. Boot into fastboot
download this tool.
https://forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
if newest version isnt working, download an older version with older twrp
than unzip the tool and run the .bat file and install twrp.
Thats it
There are many posts on Nougat not working with official TWRP (based on 6.0 build). Try booting into stock recovery. performing a system settings reset, then booting into fastboot and run the adb command, <fastboot boot TWRP-3.0.2-1.28.img>. From there you can do virtually anything you need to do. I recommend at least using a modified version of TWRP (such as 1.28). This has been posted many times before, please try and do a search for the answers first, it will help tremendously. Thanks
recovery
i had the same problem on my rooted OP3 when i used TWRP 3.0.2-1 , it worked to flash the full 4.0.1 rom but failed for everything else, flashing latest verion of twrp fixed it for me
Got the same problem (unrooted phone + device state locked, cannot access recover, but can access fastboot) with an added "benefit", USB debugging mode was off before it all went crashing and burning.
How to access my phone via PC? (all the guides I've found assume I had USB debugging mode on before the phone got soft-bricked, but as a normal phone user who never installed anything custom, I've never figured it is A MUST BE ON function).
Or simpler question - what tool to use to turn on the USB debugging mode? (if that is at all possible?)
Aislandas said:
Got the same problem (unrooted phone + device state locked, cannot access recover, but can access fastboot) with an added "benefit", USB debugging mode was off before it all went crashing and burning.
How to access my phone via PC? (all the guides I've found assume I had USB debugging mode on before the phone got soft-bricked, but as a normal phone user who never installed anything custom, I've never figured it is A MUST BE ON function).
Or simpler question - what tool to use to turn on the USB debugging mode? (if that is at all possible?)
Click to expand...
Click to collapse
I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
bob_cheeseman5 said:
I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
Click to expand...
Click to collapse
Noted that you solved your issue, but this post is about the new version of TWRP. Version 3.0.3 is available on twrp.me and it works with Nougat.
bob_cheeseman5 said:
I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
Click to expand...
Click to collapse
Gave up trying and booked a session with OP technicians Will see how it goes in a week.

[Solved] Alternating between TWRP and Samsung logo

Hi,
I was running LineageOS on my Galaxy Tab S tablet (SM-T800). I tried to update LineageOS. I went into the settings and downloaded the lastest version. However, the installation didn't go through. The download was successful, but an error message told me to try and manually install the update. I tried to go into TWRP mode to install manually the update. Instead of going in the recovery mode, I saw a TWRP app on the Google Play store. I tried and install that app. It went ok, however, I needed to reboot my tablet to finish. I did so, but after that, I got stuck in booting mode, between the TWRP logo and the Samsung logo. So the tablet was trying to boot in TWRP mode, but after about 5 seconds on the splash screen of TWRP, the spalsh screen disapear and then the tablet tries to boot in normal mode. It doesn't work, and the tablet reboots in TWRP mode, but, again, unsuccessful. It's a loop, alterning between the two splash screens.
I tryed to go into download mode and flashed the stock ROM (found on Updato) while using Odin on my computer. It worked. However, after the process, my tablet got stucked on the Samsung logo only. Now, it doesn't go in recovery mode (TWRP). I can only go in download mode or regular mode (but not working). Only the download mode works.
I don't really know waht to do. I tryed to redo the process with Odin and the custon ROM, but it didn't work better.
What can I do?
Thank you very much for your help!
Blaccko said:
Hi,
I was running LineageOS on my Galaxy Tab S tablet (SM-T800). I tried to update LineageOS. I went into the settings and downloaded the lastest version. However, the installation didn't go through. The download was successful, but an error message told me to try and manually install the update. I tried to go into TWRP mode to install manually the update. Instead of going in the recovery mode, I saw a TWRP app on the Google Play store. I tried and install that app. It went ok, however, I needed to reboot my tablet to finish. I did so, but after that, I got stuck in booting mode, between the TWRP logo and the Samsung logo. So the tablet was trying to boot in TWRP mode, but after about 5 seconds on the splash screen of TWRP, the spalsh screen disapear and then the tablet tries to boot in normal mode. It doesn't work, and the tablet reboots in TWRP mode, but, again, unsuccessful. It's a loop, alterning between the two splash screens.
I tryed to go into download mode and flashed the stock ROM (found on Updato) while using Odin on my computer. It worked. However, after the process, my tablet got stucked on the Samsung logo only. Now, it doesn't go in recovery mode (TWRP). I can only go in download mode or regular mode (but not working). Only the download mode works.
I don't really know waht to do. I tryed to redo the process with Odin and the custon ROM, but it didn't work better.
What can I do?
Thank you very much for your help!
Click to expand...
Click to collapse
Have you tried to reflash twrp via odin ? If that works go into twrp reformat your partitions, then flash a custom rom.
Hi,
Thanks for your answer. I tried to reinstall TWRP with Odin on my computer. The process went well, but the reboot of my tablet that occurs at the end of the process got stuck again on the Samsung logo. It didn't get to TWRP mode. I tried to go manually into recovery mode by holding power+vol up+home, but it didn't work.
What else can I try? Thank you,
Blaccko said:
Hi,
Thanks for your answer. I tried to reinstall TWRP with Odin on my computer. The process went well, but the reboot of my tablet that occurs at the end of the process got stuck again on the Samsung logo. It didn't get to TWRP mode. I tried to go manually into recovery mode by holding power+vol up+home, but it didn't work.
What else can I try? Thank you,
Click to expand...
Click to collapse
Are you trying to get to twrp from powered off state ? If not , get to power off state, then use key combo again to try to get into twrp.
Also when you flash twrp, in odi , there is a setting to prevent auto reboot, use that and try to get to twrp via key combo from download. Mode., finally tripple chech the key combo you are using is correct
Hi,
Thanks for the help. I tried to get to TWRP from power off state. The TWRP splash screen appears, and stays on for about 5-10 sec. After that, the splash screen disappear and the tablet reboot to get stuck on the Samsung logo again. It's like if the TWRP booting process doesn't go through...
Thanks again for your help,
Ouch !!
Looks like you got a real problem , and getting into territory I'm not expert in, Ashyx is the real authority with twrp for this device, you can try to pm him and hope he takes pity on you ( he has been helping guys on this qa thread tirelessly for over a year, and is prob taking a well deserved break ).
Otherwise a few more suggestions,
Maybe your PIT is messed up , ( but you prob would not make it to twrp splash screen in that case )
Twrp may still be trying to execute the script from the original linage update and not finding something bails ( total guess ).
Try flashing a stock ( downloaded from sammobile or somwhere you trust ) rom via odin, and see if you can get into the stock recovery. From there do a factory reset and see if you can get stock running.
Try getting into twrp with device connected to pc ( helped in some wierd cases, you never know lol ).
When TWRP splash screen comes up, try some key combos , maybe twrp checks for a script abbort key combo ?
Checkout the TWRP github issues page, see if your bug is there and a solution, create a bug report or mail a dev directly.
Have a look at the TWRP code, maybe some clues ??
Hi,
So not much development here...
I tried to download the stock ROM for my device from Sammobile and tried flashing it with Odin (JOdin actually, I'm on Mac), but it says it need a PIT file. I let Casual fin the PIT file and it finds it. Only, after that my device does not reconnect to Odin even though it's still plugged in my computer. I tried to unplug it then plug it back, but then Odin says the PIT file is corrupted. I tried to restart my device, but still not connecting to Odin...
I tried getting into TWRP with my device connected to my computer. Still the same problem of rebooting while TWRP is booting (while it's on splash page).
No combo key seems to work to keep TWRP open and loading...
Didn't find anything on TWRP github and I'm not saavy enough to look into TWRP code.
So, I'm still stuck with my initial problem. Do any of ou have some advices/suggestions or can help me with my problem please? At this point, I've been without my tablet for more than a month and it S**KS!!
Thanks in advance everyone,
Blaccko said:
Hi,
So not much development here...
I tried to download the stock ROM for my device from Sammobile and tried flashing it with Odin (JOdin actually, I'm on Mac), but it says it need a PIT file. I let Casual fin the PIT file and it finds it. Only, after that my device does not reconnect to Odin even though it's still plugged in my computer. I tried to unplug it then plug it back, but then Odin says the PIT file is corrupted. I tried to restart my device, but still not connecting to Odin...
I tried getting into TWRP with my device connected to my computer. Still the same problem of rebooting while TWRP is booting (while it's on splash page).
No combo key seems to work to keep TWRP open and loading...
Didn't find anything on TWRP github and I'm not saavy enough to look into TWRP code.
So, I'm still stuck with my initial problem. Do any of ou have some advices/suggestions or can help me with my problem please? At this point, I've been without my tablet for more than a month and it S**KS!!
Thanks in advance everyone,
Click to expand...
Click to collapse
Use ODIN via Windows or a VM on your Mac.
Flash stock firmware then boot to recovery and factory reset.
Reboot and wait ten minutes.
Hi, thanks a lot for your time.
I will try that at work tomorrow as I don't have Windows at home. However, I did try to flash stock ROM with Windows initially (see first post for more info) and it didn't solve my problem. I wasn't able to access recovery mode after the stock ROM was flashed. Hope it's gonna work now and I'll be able to factory reset.
I'll let you know tomorrow afternoon.
Thanks,
ashyx said:
Use ODIN via Windows or a VM on your Mac.
Flash stock firmware then boot to recovery and factory reset.
Reboot and wait ten minutes.
Click to expand...
Click to collapse
WOW!!! Thank you so much Ashyx. I can now finally use my Tab S. I'm so grateful!!! Thousand time thank you! I deeply appreciate your help for resolving my problem.
ashyx said:
Use ODIN via Windows or a VM on your Mac.
Flash stock firmware then boot to recovery and factory reset.
Reboot and wait ten minutes.
Click to expand...
Click to collapse

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