I found a similar thread: Stuck on LG Bootscreen only download mode, LGUP didn't work that DIDN'T have an answer, in case anybody asks.
Basically, no fastboot, no recovery, download mode but LG Flash Tool 2014 AND LGUP don't seem to recognize it.
I was originally on the latest T-Mobile Firmware, then I unlocked the bootloader, installed TWRP, and installed the H-ROM.
I don't remember what exactly happened, but a bunch of factory resets and a few reboots into and out of TWRP later, I'm assuming I've bootlooped. Neither LGUP nor LG Bridge will work, but I can still boot into download mode. Is the only solution really the freezer/hair dryer method, or is it possible to use software to fix it?
Please delete, this thread is no longer needed as the phone is currently fixed.
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Hello.
Last night I decided I wanted to root my LG G4 running marshmallow (so we're talking about H81120i). I was able to unlock my bootloader, restart the phone and use it, etc. I was able to boot into TWRP (but not anymore for some reason) and restart the phone and use it as well, however, when I installed SuperSu using TWRP and cleared my cache my phone gets stuck at the second white t mobile screen.
I am able to get into download mode, factory reset mode, etc, just not access android. When I plug my phone into my the drivers suggest that it is a COM6 port. The LG support software recognizes my phone while in download mode though. What are my options here? Will it be safe to flash H81110n using the lg flash tool 2014 version or will that break the phone more? I thought I'd ask here first because I've always found any and all information I need for this sort of thing here.
If you need any more information to safely answer this question I will provide anything you need.
Thanks.
toxicturn said:
Hello.
Last night I decided I wanted to root my LG G4 running marshmallow (so we're talking about H81120i). I was able to unlock my bootloader, restart the phone and use it, etc. I was able to boot into TWRP (but not anymore for some reason) and restart the phone and use it as well, however, when I installed SuperSu using TWRP and cleared my cache my phone gets stuck at the second white t mobile screen.
I am able to get into download mode, factory reset mode, etc, just not access android. When I plug my phone into my the drivers suggest that it is a COM6 port. The LG support software recognizes my phone while in download mode though. What are my options here? Will it be safe to flash H81110n using the lg flash tool 2014 version or will that break the phone more? I thought I'd ask here first because I've always found any and all information I need for this sort of thing here.
If you need any more information to safely answer this question I will provide anything you need.
Thanks.
Click to expand...
Click to collapse
http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227
Make sure you carefully follow the guide.
Did you perhaps only boot into twrp but not install it?
I would try to flash the kdz again through either LGBridge or LGUp again as you still have download mode.
I had messed up a couple settings on the custom ROM I was running. I wanted to get back the stock setting so I went to recovery and did a wipe. I rebooted and found I lost supersu. I went to reboot back to recovery to flash supersu and It wouldn't boot into recovery. I went to adb on computer and couldn't reboot it there either. I found I could put the phone into Download mode. I tried the flashtool and LGUP and neither will communicate with the phone to be able to flash stock firmware. I don't mind too much because I can JUMP, its just the boot animation says Xperia.
ADB commands only produce "Waiting for device"
Flashtool says, "Wrong dll file"
LGUP won't let me use a current KDZ but only a tot file and the only one I found is 10n.
Relevant thoughts welcome as I continue to scour these pages.
Apparently LGUP considers going from 20r to 20p and upgrade. Lesson learned. 1) When your phone is bricked playing with other tool settings can't hurt anything. 2) Sometimes the OP of a thread can be a little ambiguous, read and reread. If one thing doesn't work, check for (possible) variations.
I was using refurbish setting on LGUP because that's what seemed to apply.
Well I was dumb today and thought I'd see what happens when I go and lock the bootloader on my tmobile G4 with Genisys 4.9 installed. I was going to replace it anyway it was giving me issues. it started bootlooping with error 1003. No prob, I bricked this thing before. But now LGUP will not recognize the model. Model is Unkown, and COM Ports are COM4, Genisys. I've tried just about everything I can. I think my issue is that LG isn't seeing my device as a H811 so it won't let me force it to restore. Are there other ways that I can restore, since I can get into download mode?
clackingcomputer said:
Well I was dumb today and thought I'd see what happens when I go and lock the bootloader on my tmobile G4 with Genisys 4.9 installed. I was going to replace it anyway it was giving me issues. it started bootlooping with error 1003. No prob, I bricked this thing before. But now LGUP will not recognize the model. Model is Unkown, and COM Ports are COM4, Genisys. I've tried just about everything I can. I think my issue is that LG isn't seeing my device as a H811 so it won't let me force it to restore. Are there other ways that I can restore, since I can get into download mode?
Click to expand...
Click to collapse
you can enter doenload mode.?? if so then flash latest KDZ 20r.. and nope flashtools wont work you need LGUP.. to flash KDZ.. good luck.
raptorddd;71773376c said:
you can enter doenload mode.?? if so then flash latest KDZ 20r.. and nope flashtools wont work you need LGUP.. to flash KDZ.. good luck.
Click to expand...
Click to collapse
Yeah, see the problem is that LGUP isn't reading my h811 as itself, just saying unknown model so I can't flash with itg
So to go more in depth and kind of bump this thread, I cannot enter recovery. I can get to where it asks me twice to confirm resetting but instead of entering twrp it goes back into the LG bootloop. My biggest thing is I need adb, but I can't figure out if I can access it on this device, since I can't boot into the OS or recovery. I think the custom rom I had on it, Genisys 4.9, changed the model number in build.prop so the LGUP tool only sees it as an unknown model. If I could just force LGUP to think it's the H811 it is then I could probably flash it. LG Flash Tools always get frozen at the network part. Well since the entire problem came from my using "fastboot oem lock" while on a custom rom, so I assume I just need to "fastboot oem unlock" to fix it. God this has been such a pain
Hi everybody
I need to find an update.zip to flash it on stock recovery and attempt to repair the phone system.
Long story short..
I restore my D415 (previously with Lineage 14.1) to stock firmware (KK) via KDZ file and LG flash tool, then update it to LP with LG Mobile Support Tool and everything was good, then i tried to root the device with the LG OneClick Root (which i used several times before to root my phone without problems) but i don't know what happened during the batch process and now Download Mode has been replaced with Fastboot mode and the device hangs on the T-Mobile startup screen, so i can't flash a KDZ file again to restore the phone without a Downlaod Mode. The fastboot mode throws "remote: unknown command" with every command i tried (except fastboot getvar all; which shows "unlocked: no") even reboot doesn't work.
Tried everything even booting on Qualcomm Qdload mode (shorting the phone with test points) to reflash the firmware files but couldn't succeed because QFIL, QPST Software Downloader and BoardDiag they all threw errors.
I can access the stock recovery mode by pressing home button when the "erasing" screen appears after selecting "yes" on factory reset menu, so i need an official update to try to fix this phone, don't know if its gonna work or if this is a hardware issue but at least i want to try. Buying a new one is very difficult for me right now.
Thanks for any help.
Hi all,
My Lgg8 has bootloop now. It loop betwen LGG8 logo ->Erasing Circle -> LGU+logo (sometime logo stuck in the middle). see below video (pls fast fwd..it's a bit long.):-
Mine is a Korea G820N with LGT. No bootloader unlock, No root. All stock. This happen after I replace the faulty camera module. (even I have removed that module and still the same)
I have install all the tools, LGUP, LGUP cmd, DLL, LG driver, Qil. I can go in download mode, factory reset screen, fastboot menu. all are normal.
I can flash new kdz and I have download a few different kdz to flash, (hv tried LGUP no matter refurbish or update option) have tried LGUP cmd. have tried LG bridge. All 100% work and no issue during the flash. BUT, the phone still the same bootloop as the above video.
Do you think here is a hardware issue in the mainboard rather than software ?
I don't need it unlock or root, I just want to back to function in stock ROM.
Looking forward for your comment.
cheeers,
pigpig