Develop Bugs

HTC One X doesn´t start anymore

Hello guys,
I am new here and thats my first post, please tell me when I do something wrong. But I think this is the best forum to ask :
I had a well-functioning HTC One X. But at once it doesn´t start and stuck in the HTC bootlogo. I googled it and after many days I try to unlock the bootloader. The bootloader starts only after many trys and then shows a red field "battery level is too low to flash"(connected to PC). The red led doesn´t lights up. I leave it in the bootloader and after many hours it starts normally (bootloader still locked). I set the phone back to factory settings (not in the bootloader). I used it like every day, but after hours when I switch to the normal menü it was stucked for 5 seconds and then the screen become black and it wont restart. I buy accumulator for the phone and exchange it (I have a little bit "hardware skills"). I connected it with loading cable to the socket (not the PC!). The red LED flashes for a second and then happens nothing. After many trys the bootloader shows up (connected to my PC) and I googled for almost hours to find a solution. "I have to install a custom ROM". I unlocked the bootloader with the programm "One X All-In-One Kit v2.3". I don´t know why but I shut the phone down. I try to start the phone or the bootloader but it doesn´t work. I try it now for weeks but it is dead (but I´m very sure the problem that it doesn´t starts is not due to the unlocked bootloader, because it is the same problem with the "not starting" like the time before I unlocked it). But the strange thing is... and now comes the important part... when I connect the phone with my PC the PC make the "USB connected"-sound and says that there is a unrecognized device connected. And when I try to start the bootloader the PC makes the "USB disconnected"-sound and a second later the "device-driver software not installed"-sound (I hope you know what I mean) and when I keep trying to start the bootloader it happens again and again the same. I tried almost everything, I use a loading.bat file but it can´t detect the phone (you know "unrecognized device"). Is it the accumulator ? Is the hardware dead ? Or what is the problem ?
I hope you understand this text (I´m sixteen and from germany). If you don´t please ask me every question you have. I really hope you can help me with my really long-term problem.
Thanks for every question, reply, solution or improvement proposal for me
XilentMe

So, what i have deduced is that
1. You are stuck on fastboot with low battery.
2. Your PC does not recognize your device.
For this purpose, first download and install the htc usb drivers. These should work: http://forum.xda-developers.com/showthread.php?t=2211791
Then visit this thread: http://forum.xda-developers.com/showthread.php?t=1658084
follow the instructions, once your phone is charged enough, unlock the bootloader, flash a custom recovery, boot into recovery and let it charge for a while, then flash a new rom.
Dont forget to press the Thanks button if i helped

Okay thanks for your proposal, but the problem is now that I can´t boot into bootloader, the phone does nothing. No reaction, no charging LED, no normal boot, no bootloader...absolutely nothing. Only when I connect the HTC to the PC the PC make the "USB-device connected" sound, as if you connect a USB-stick to your PC, but nothing else happens.
Any ideas or similar problems ?
XilentMe

So try to charge via pc. Leave for some time connected to pc and try to power up.

Hey,
I tried it, but it didn´t work. Nothing happens, only the "plug off-sound" when I want to start the bootloader via volume down+power button, while it is connected to the PC. I have no idea what to do.
XilentMe

LG G3 Stuck in Factory Reset Status 2

Hello there,
Today my rom (Xenon HD) stopped working and i wanted to get my old stock rom back.
So i started to downgrade, but in the end i ended up in the Factory Reset Status 2 after it shows the boot animation of an os called "mini os".
Anybody got experience on this ?
Thanks
Baschdi

Factory Reset 2
Baschdi_ said:
Hello there,
Today my rom (Xenon HD) stopped working and i wanted to get my old stock rom back.
So i started to downgrade, but in the end i ended up in the Factory Reset Status 2 after it shows the boot animation of an os called "mini os".
Anybody got experience on this ?
Thanks
Baschdi
Click to expand...
Click to collapse
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done

This is not working for me. it says waiting for connection, please help
i am frustrated !!!

likhil2k3 said:
This is not working for me. it says waiting for connection, please help
i am frustrated !!!
Click to expand...
Click to collapse
Try unplugging and plugging back in and ensure you are on PORT41 for the device driver. After you do that and in Download Mode, then unplug and replug USB.
Also do not use USB 3 and try another port if you still have issues.

Bhimani bhargav said:
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
I have same issue in my LG G3 D850 I have apply your procedure Thanks It works ... first time the setup screen completes but when i powered off mobile and insert the sim and then powered on its again going to miniOs again i Normal boot+(power) but now boot looping auto ... what can i do now ???

For me who had the same issue, I just rebooted the device back into download mode and the LG flashtool resumed automatically. (I did not close or stop the process from the LG flashtool when I got this message).
Once the process resumed automatically, I still got download fail.
I can see whenever the device reboots, the modem disappears from within device manager after getting to the "Factory Reset 2" screen.
Any advice?
Update: I tried about 7 times to get it flashed. I ended up just restarting the phone in normal mode and strangely voila it works perfectly. Even though the software said the flash failed, it still worked. Thanks anyway!

Bhimani bhargav said:
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
This worked. Tks a lot.

I just got a LG harmony and as i soon turned it on it went to factory reset status and I tried to bypass but it keeps taking me to Factory reset, I also tried the download mode which took me to firmware update for hours it has still been at 0%. Taking forever

Bhimani bhargav said:
Factory Reset 2
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
thank you very much ,it work succesful

LG G3 in download mode not detected by Windows

Dear xda-developers-community,
I'm trying to get a phone of a friend of mine working which just reboots whenever the phone is started. The resulting boot loop can only be interrupted by taking the battery out or wait until it is depleeted.
In order to fix this soft-brick I first tried to use recovery by pressing VOL - & POWER. In the menu, I could select and confirm to recover to factory settings, but after some seconds the boot loop appeared again with (seemingly?) no change having been made. The error kept appeaing over and over again.
After trying recovery mode, I attempted to start the phone in download mode by pressing VOL + on the (switched off) phone and connecting a USB cable. The respective menu also opened, here, showing "Firmware Update" and "Do not unplug the USB connection until the process is complete". According to many tutorials I found on the internet, when having installed the required drivers (I used LG United Mobile drivers from here), this procedure should allow you to flash a recovery image through LG's flashing tool (which one can also find on that page).
However, when I connect the LG G3 (D855) to a computer the driver is installed on, there is no new device shown in the Device manager. I tried this out with Windows 10 x64 and Windows 7 x64 and disabled driver validation on both systems and enabled test signing on Windows 10, respectively. Additionally, I followed these instructions, but in this case the screen stays dark and the device is not detected either. It seems like there are not so many people experiencing this error, but I hope we can find a solution.

nVentis said:
Dear xda-developers-community,
I'm trying to get a phone of a friend of mine working which just reboots whenever the phone is started. The resulting boot loop can only be interrupted by taking the battery out or wait until it is depleeted.
Click to expand...
Click to collapse
This may sound like a dumb question, but have you tried a new battery yet? If it is one of the original batteries it could have gone bad & started bootlooping...like mine did a few months ago.
As far as the PC not recognizing the phone you can try downloading USBDeview and uninstall anything that has the vendor ID's of 1004 & 18d1(pretty much anything that says android or LGE in the description) & reboot the PC. Hopefully it'll recognize your device and install the drivers the next time you plug it in. If it doesn't find the drivers automatically for you then install LG drivers manually.
Link for usbdeview: http://www.nirsoft.net/utils/usb_devices_view.html
Link for LGE drivers: http://www.lg.com/us/support/software-firmware-drivers
Good luck :fingers-crossed:

Bricked my LGG3

Hello everyone,
so here's my problem:
Wednesday morning i took my phone out of my pocket and had a blackscreen. I tried to restart it and took out the batterie but i always got stuck in the LG Logo or a bootloop. Since i had TWRP and lineage OS installed, i tried to go into the twrp menu with the factory mode (power button + volume down) but after the "double yes" i always got a blackscreen.
So i went into the internet to fix it myself. I tried the "LG Flash Tool 2014" with the kdz. reset & the other Flash tool with the tot. reset. Both didnt recognize my phone. At this point, the only thing that worked was the download mode BUT not the recovery mode that usually comes after it. It just showed the download mode for some seconds and then a black screen. Later i noticed that my phone showed as a "qualcomm device" in the device manager, and the internet said that this was bad. So i used "Board diag" and "Smart boot diag" to fix it, but at the point where the device should have restarted, and the download mode should have worked WITH the recovery mode, i always ONLY had the 6 second download mode. After messing a bit with "Board Diag" i even got it to show up as LGE AndroidNet USB Serial Port in the device manager, which apparently was even more bad and only way to go back to qualcomm was to shorten the pins which i did. And it worked BUT now i was back with the qualcomm stuff.
So as you can see, i've prety much run i circles since wednesday... Iam now at a point where 3 different thingscan happen when I try to put my LG into download mode (volume up + usb cable):
1. Its recognized as a unknown device which is constantly connecting and diconnecting, so iam assuming my phone is bootlooping with a black screen.
2. The download mode icon shows on my phone and disappears after some seconds but my pc fails to recognize it.
3. Nothing happens and the screen stays black
When i only connect the usb cable, it shows a stuck charging icon for some seconds and then goes black. Connecting without a battery shows the "missing battery icon". I tried with 2 pc's, both having the LG mobile driver 4.2 and the qualcomm driver installed AND beeing in testmode. Both don't recognize the device. I also tried 2 batteries on my phone but it changes nothing.
I have a D855. And i know that my situation is pretty f*cked but maybe someone i able to help me anyway. Thanks alot.

Oneplus 5t black screen unbricktool doesnt seem to work

I've got a dead oneplus 5t from my son. It was not charging anymore.. So I've replaced charging cable and battery.. Seemed to work it was charging... However it doesn't boot... No logo screen screen stays black/blank.
Tried several suggestions on this forum to get into recovery mode, fastboot mode... But still nothing. Only vibrating works after a few seconds.
So tried to unbrick with OP5T_Unbrick_tool_dumpling_43_J.40_181105(OOS.5.1.7) and the qualcomdrivers..
I was able to install the drivers and I see they are installed in devicemanagement.. and an empty folder create for oneplus.
I charged the phone all night and was able to download the upgrade. It then says download complete and I tried to restart the phone..
Still just vibrating but nothing happens.. Seems like everything has vanished from the phone, no recovery, no bootloader, no files.
So how to proceed to get all the stuff on the phone? And maybe the displayscreen is dead, but how can I tell?
Also tried the SMT upgrade. Strange thing is the device and com port are seen in devicemanagement and active when I connect without volume up, but cannot start because it says When I try to use smt mode the program says: "This COM port is disable by user". With volume button up pressed and then connect, ledlight turns green but the qualcomdevice is grayed out in devicemanagement and it says waiting for device..
Any help is welcome. I am a noob in how to proceed on the phone however I have an IT background.
Spent already so many time figuring out .. maybe it's effortless and its for the trashbin.
Thanks in advance

SOLVED
I opened the phone again loosened all those tiny connections to battery, screen,charger, mainboard and re-attached them.. Somehow a connection seemed to be fitting allright as yI looked at it, but apparently wasn't :good: