LG G4C(H525N) Doesn't boot after flashing wrong firmware No download mode,No fastboot - LG G4c Questions & Answers

Hello xda comunity i've got a big problem with my g4c...after i've root my phone with kingroot(i've rooted it to get the otg to work) (i was following this guide http://forum.xda-developers.com/android/development/how-to-root-lg-g4c-h525n-t3187705) and when i shutdown the phone and i tried to reboot it, it won't boot and it gave me a security error...so i've tried reinstalling the stock firmware...first i search on google "lg g4c firmware" and i found a site that only redirect me to *******...then after a little search i found a page in a site claiming that the firmware was for the g4c...i downloaded the firmware,booted into download mode and started the flashing process.... when it was like 23% of the flash process the phone disconnected and now it won't boot....after i checked better i discovered that even if the site claimed that it was for the g4c it was for the g4s... so now i've a semi-installed firmware that is not for my phone,my phone is hard bricked,no download,no fastboot,no recovery...the only thing that i get is qhsusb_bulk in device manager when i try toconnect it to my computer(windows 10)...how can i solve this?

Related

Won't install drivers from download mode

Hello guys,
I searched on the net but didn't find any answers. I'll try to be clear : Today I flashed my international G2 with the LG flash tool. Everything worked fine. Then, when I tried to put a new rom on the phone (by using a custom recovery), I made a mistake and soft-bricked the LG. Now I can still access to the download mode, but the tool doesn't work anymore when i plug the phone in download mode. I tried to reinstall the drivers, but my computer doesn't seem to see anything...
What's wrong ?
Precision : At each time, my phone was rooted, but this morning when I succeed, nothing was written in the download mode and now, I see the word "rooted" in the bottom of the screen.

Download mode doesn't working, but system and recovery works fine.

Hi,
I went back to stock by using LG Mobile Support Tool application (Repair Software section). It flashed correctly (D802TR20c) and I started to use it.
After a while I wanted to install 20f kdz version via Flashtool. I booted phone to download mode, connected to PC. It starts upgrading but fails at %4. There was nothing moved on phone screen, it's still says samethings. COM port should wrote on phone screen when flashing started but it doesn't.
I tried repair software section on LG Mobile Support Tool, It downloaded right firmware for my phone and started to upgrading but it fails at %4 too.
I tried TOT flashing, I did it before succesfully. But now, when I press start button, it stucks at READY.
Then I downgraded bootloader and download mode via AutoREC application, but I have still same problem. I tried it other computers too.
I can still boot to recovery and system without any problem. I can boot to download mode too, but there's something blocking flash progress.
What I should do?
Thanks in advance.
I'm still stuck. It seems that nobody encountered with this problem.
If I'll solve this, I'll write the solution.

[Q] Stuck at security error

Hi everybody!
I have Lg g2 D802 Baltics. Yesterday I tried to return to Stock KitKat via Lg mobile support tool and Flashtool, both of them didn't work, they just didn't find my phone in download mode. Then I decided to reroot and reinstall TWRP. The first was done and the second too, but unfortunately my phone restarted and got a Security error and LG logo and can't boot, just permanently restarts. I've already read a hundreds of articles like http://forum.xda-developers.com/showthread.php?t=2432476 . The method written here isn't working for me because the Flashtool just can't find my phone when trying to install a firmware. So, any program like Lg support tool and Flashtool don't find my phone, so I can't do anything with my phone to get it to work. I'm facing i real problem for me and i'm quite shocked. So, please, tell me what to do, how to fix my phone. I tried a lot of thins, nothing helped. What to do?

Mode download doesn't work

Hello,
I want upgrade my LG G2 with a new rom 5.xX
This phone have only the operator update. No custom, no trwp, nothing...
I installed drivers and when i want access to download mode. I can't. I use the good proccess with vol up then plug usb cable always with vol up presses.
follow this procces after a little moment my phone show me battery logo charging.
So i can't access to download mode.
I would use this process
t was NOT bricked. I finally tried playing around with the LG Mobile Support Tool (B2CAppSetup.exe). Of course it detected that my phone already had the latest firmware from T-Mobile, but then I clicked Options>Upgrade Recovery.
It downloaded for a while then I noticed it had put my phone into download mode (it said "Rooted" in red letters at the bottom). Then it flashed the same firmware over and I immediately tested, it entered download mode right away. But I didn't end up needing that as Stumproot was able to brute force it now after the recovery flash.
Anyway, I couldn't find an answer anywhere else. Most results also have a bricked phone, but that wasn't my issue. This solved my problem and maybe it could work for others.
but it's impossible for me to install B2appsetup on my pc the installation begin then stop after 5s then nothing.
I have Win 10.
Do you have a solution for me , please??
poupinej said:
Hello,
I want upgrade my LG G2 with a new rom 5.xX
This phone have only the operator update. No custom, no trwp, nothing...
I installed drivers and when i want access to download mode. I can't. I use the good proccess with vol up then plug usb cable always with vol up presses.
follow this procces after a little moment my phone show me battery logo charging.
So i can't access to download mode.
I would use this process
t was NOT bricked. I finally tried playing around with the LG Mobile Support Tool (B2CAppSetup.exe). Of course it detected that my phone already had the latest firmware from T-Mobile, but then I clicked Options>Upgrade Recovery.
It downloaded for a while then I noticed it had put my phone into download mode (it said "Rooted" in red letters at the bottom). Then it flashed the same firmware over and I immediately tested, it entered download mode right away. But I didn't end up needing that as Stumproot was able to brute force it now after the recovery flash.
Anyway, I couldn't find an answer anywhere else. Most results also have a bricked phone, but that wasn't my issue. This solved my problem and maybe it could work for others.
but it's impossible for me to install B2appsetup on my pc the installation begin then stop after 5s then nothing.
I have Win 10.
Do you have a solution for me , please??
Click to expand...
Click to collapse
so you have tmobile. right?
and only 5.0.2 lillipop is availabe stock.. if you go asop or cm the theres 5.1.1- 6.0
then do what the guide says to do here.
http://forum.xda-developers.com/showthread.php?t=2432476
I can't do that because I don't have the download mode
poupinej said:
I can't do that because I don't have the download mode
Click to expand...
Click to collapse
try the skr tools , with the nuke download . read as i havent used it but i read that might bring download. the other way is to short circuit the motherboard.. but ill go read skr tools if i was you.

OnePlus2-No OS Installed-Marshall London Device

Hello people,
I did so many wrong decisions and I regret them all :/
Im gonna tell you all th details.
I got OnePlus2 phone and I rooted it.Then the GooglePlay didnt work and I tried to fix it with no success.
So today I decided to unroot my phone with a factory reset.With TWRP installed I deleted all memory from the phone.
I tryed to reboot it and a msg poped up saying "No os installed".
I looked up for ways to fix it with no success.I tryed to connect the device to my pc Windows10 and in device manger its shows up no problem just in the category "Marshall London Device" name "Google Nexus ADB Interface".
I think I bricked my phone.
How to fix my phone and get it back to the normal ?
thanks for the helpers
There are many threads in the general section that can help in situation like yours.
If you can boot into Twrp or Fastboot mode, then use the guides provided by @Spannaa at http://forum.xda-developers.com/oneplus-2/general/rom-mirrors-official-oxygen-os-roms-ota-t3209863
Alternatively you can use my thread to get back to stock the official OnePlus way at http://forum.xda-developers.com/oneplus-2/general/guide-official-stock-reset-to-oos-2-2-0-t3290707

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