Develop Bugs

[Q] Booting problem

hi. I encountered a problem on my phone that doesn't boot properly.
When i tried to switch on my phone it showed at first the welcome msg "Samsung S4 mini gt-i9192" then after that, a pitch black screen, could not properly boot. But i learn that it does not turns off after the screen turns all black, i have to press the power button first to turn off the phone.
This problem started when i installed an app with some compatibility problems.
I wanted to root my phone hoping that can solve the problem, but then again a problem occurred when i tried to connect my phone to my laptop. It fails to install MTP usb device to my computer. I tried connecting it again provided that samsung kies was installed but again failed to connect my phone. Therefore i cant root my phone because i cant copy the files needed to root to my phone sd card.
I tried reinstalling kies, installing mtp drivers but nothing happened. I tried also restoring the previous boot image, restoring factory settings using recovery mode. But then problem still exist.
And fyi my phone can't mount any external sd card using recovery mode. And i think it was not in a debugging mode.
Phone: samsung s4 mini gt-i9192
firmware: i dont know
So basically, the problem is:
my phone wont boot,
i cant connect it to my pc
and i cant root it.
How should i root or even flash my phone when i cant connect to my computer? Do you have any idea on how to solve this problem? Any solutions or suggestions would be much appreciated. tnx.

champagneerantja
emzgames said:
snipped.
Click to expand...
Click to collapse
Have you tried putting the phone in download mode (Volume Down + Home + Power) and then connecting it your p,c , if not give this a shot it should pick up the drivers , once done , take out the usb cable hold the power the button to shut down and boot up .
since you have not mentioned your OS am assuming it is windows , try taking out Kies via some software like revo uninstaller which will remove all directories plus all registry entires then reinstall it if you really need it.

dovakinn said:
Have you tried putting the phone in download mode (Volume Down + Home + Power) and then connecting it your p,c , if not give this a shot it should pick up the drivers , once done , take out the usb cable hold the power the button to shut down and boot up .
since you have not mentioned your OS am assuming it is windows , try taking out Kies via some software like revo uninstaller which will remove all directories plus all registry entires then reinstall it if you really need it.
Click to expand...
Click to collapse
tried both yet still unable to connect.

emzgames said:
tried both yet still unable to connect.
Click to expand...
Click to collapse
dial *#0808# from your cell this would take you in usb settings, tick both mtp+adb , reboot , if they art already ticked uncheck them and check them again.

dovakinn said:
dial *#0808# from your cell this would take you in usb settings, tick both mtp+adb , reboot , if they art already ticked uncheck them and check them again.
Click to expand...
Click to collapse
im afraid i cant do this coz i cant boot my phone properly, up to welcome msg only then screen black out, but not power off.

emzgames said:
im afraid i cant do this coz i cant boot my phone properly, up to welcome msg only then screen black out, but not power off.
Click to expand...
Click to collapse
ohhh best take your cell to your nearest service center then . if you can't flash anything and usb is not getting detected i don't see any other option , maybe someone more experienced here can help.

dovakinn said:
ohhh best take your cell to your nearest service center then . if you can't flash anything and usb is not getting detected i don't see any other option , maybe someone more experienced here can help.
Click to expand...
Click to collapse
yah, thats what im thinking. i just brought this here hoping to solve this problem without going to a shop. thanks anyway.

aac. To me put your phone in download mode then use moborobo(a windows software) . Just open it and it will install the driver. If it dies not work then use adb installer . Remember you should have only any one of the software at one tim means either moborobo or kies or adb installer
Sent from my GT-I9001 using xda app-developers app

btw have you tried to boot the phone in safe mode ?? if it boots in safe mode it is still fixable without going to service center. power down , power up+ tap the menu button 3 or 4 times at THE same time to boot into safe mode if it boots into safe mode that means the hardware and OS is fine if it does not well then your out of luck.

dovakinn said:
btw have you tried to boot the phone in safe mode ?? if it boots in safe mode it is still fixable without going to service center. power down , power up+ tap the menu button 3 or 4 times at THE same time to boot into safe mode if it boots into safe mode that means the hardware and OS is fine if it does not well then your out of luck.
Click to expand...
Click to collapse
tnx man, but no luck..

Tried flashing a custom rom?

[Q] LG G3 D855 [Secure booting error. Boot Certification Verify]

Hi bros
i tried to flash Android 5 20A to my LG G3 phone with LG Flash Tool. But then system crashed immediately. Right now I cant open phone in recovery mode, i cant use hard reset. I cant open download mode. And even computer cant see my phone with usb. On the top left corner, blue and red lights always lighting when i tried to open download mode.

same here

Hi I have just send it to lg assistance

Search for G3 unbrick here in xda or google. There's a few threads about how to "unblock" the phone.
I've done it twice already because of tests on it...

This thread is supposed to also work on the G3. Thought it might help:http://forum.xda-developers.com/showthread.php?p=50775936

akeldan said:
Hi bros
i tried to flash Android 5 20A to my LG G3 phone with LG Flash Tool. But then system crashed immediately. Right now I cant open phone in recovery mode, i cant use hard reset. I cant open download mode. And even computer cant see my phone with usb. On the top left corner, blue and red lights always lighting when i tried to open download mode.
Click to expand...
Click to collapse
I think phone of you unplug battery , Hold volue + inplug battery + and connect cable
If phone detect driver 9008 phone hardbrick
i can unbrick.

tungkick said:
I think phone of you unplug battery , Hold volue + inplug battery + and connect cable
If phone detect driver 9008 phone hardbrick
i can unbrick.
Click to expand...
Click to collapse
Hello my dear friend, I am having the same problem please help. Thank you. I got an email attachment.
[email protected]

Hi.
I had the same issue. All i did is do a hard reset on my phone by holding volume down and power button, when you see lg logo release the keys and press power button as fast as you can until you see hard reset.

Completely unable to boot to download mode

Hi, as the title says I am completely unable to boot to download mode on my E988. I have literally tried every possible combination of button pressing but nothing works. I have tried rebooting to bootloader from cwm but that doesnt work either, all it does is reboot, show the LG logo, then it reboots normally.. I have tried using terminal emulator to use the command "reboot download" but it doesnt work either, all it does is reboot, show the LG logo, then it reboots normally again. It seems that I am completely unable to access it at all. Any ideas?

Have you try with one end of the usb cord already plug in either your computer or phone, hold down both volume buttons, and plug in the other end. This was the only way down load mode would came on for me until I fixed the phone.

Yup I have. No combination of keys and button pressing seems to work for me it's odd.
Sent from my LG-E988 using XDA Free mobile app

To add on to my previous post, when I do the method whereby I hold vol + and vol - and plugging the usb cord in without my phone's battery, a message shows up when it is detected saying that a "...usb device has malfunctioned...". My phone will then just keep showing the lg logo over and over again causing the message to pop up again and again as the phone is detected and then not detected and the cycle just repeats itself. I have tried to reinstall lg drivers but nothing seems to work...
Edit: It would seem that the phone is indeed trying to boot to download mode whether I use the key combination or command, but it is unsuccessful in doing so and just reboots. Has anyone ever encountered this problem?

i can't access download mode on my lg f240l
guys please help me
i have tried to install a cwm on my lf but when i tried to restart it boots up and stopped on lg logo
i want to use flash tool i have the dll and tot file bot i can't access download mode (does not work vol + and connecting it with usb)
and when you start the power button menu and back keys blinking
Does anyone know what to do?

sllavy said:
i can't access download mode on my lg f240l
guys please help me
i have tried to install a cwm on my lf but when i tried to restart it boots up and stopped on lg logo
i want to use flash tool i have the dll and tot file bot i can't access download mode (does not work vol + and connecting it with usb)
and when you start the power button menu and back keys blinking
Does anyone know what to do?
Click to expand...
Click to collapse
i made it
1 pulled out the battery
2 press volume key up and down(at the same time)
3 plug the usb
and it worked !!!!
happy with download mode and flash tool

sllavy said:
i made it
1 pulled out the battery
2 press volume key up and down(at the same time)
3 plug the usb
and it worked !!!!
happy with download mode and flash tool
Click to expand...
Click to collapse
I have tried that at least a 100 times (I really did) but it doesnt work for me...

Me too, I'm having the same problem, I'm totally unable to get into download mode using standard methods (vol up/down, battery in, battery out etc etc)

dkusnierz said:
Me too, I'm having the same problem, I'm totally unable to get into download mode using standard methods (vol up/down, battery in, battery out etc etc)
Click to expand...
Click to collapse
I have the same problem, and I don´t know what to do. I get lost.....
I can understand why this happend. It should be a simple way to enter in download mode, but nothing results. I´m almost crazy...

Rucosta said:
I have the same problem, and I don´t know what to do. I get lost.....
I can understand why this happend. It should be a simple way to enter in download mode, but nothing results. I´m almost crazy...
Click to expand...
Click to collapse
Please help. I am stuck too... No download mode is insane

[Q] Please help with BootLoop after screen replecement

So i had a cracked screen, ordered a new one of aliexpress. Exchanged it, turned on the phone and got the boot loop.
I read that exchanging the screen acts like a new hardware ID and this is why i get the LOOP.
So i wanted to turn off the cores:
- installed drivers from LG.com
- used original cable
I hold the volume up button, plug the phone and still get to the boot loop. No download mode. How could my download mode be erased if i changed the screen?
I also sent the phone into warranty but they said because i exchanged the screen they will not fix the boot loop!!! LG are a bunch of assholes but that is a story for another time.
If you can think of something regarding to how i can get into Download Mode, please let me know
Thank you
UPDATE: I changed the cable and now the download mode icon appears and after 3 seconds the phone resets and download mode appears again (if i keep pressing vol up) and so on.. It does not actually enter the download mode.

is there any way to force bootloop???? with a kdz file or changing something with root permision ??? i need to send my phone to the SAT

LG G7 bricked

Hello. I tried to install Android Pie on my LG G7 ThinQ and it failed. When turning on the phone it's showing only one thing (attachment). Tried to enter to download mode, but it's going back to this screen from attachment. Tried LG Up but it's not recognizing device. Can somebody help me? I don't want to give it back on warranty or to support.

hello, the same thing happened to me, I wanted to flash the 9.0 with lgup and when I reached 98 I launched error, my lg g7 now only enters fastboot mode and with the cmd I can execute commands like fastboot boot and fastboot devices, but lg up not recognize. Someone to help please ??

Here is picture

You can try with usb connected, press and hold volume up before restart to download mode to LGUP flash again (try with 8.0 or fresh download fw).

tripticonachos said:
Here is picture
Click to expand...
Click to collapse
My phone is in this state I read the forums about the problem, but no luck man. Only octoplus box ...

TO ADMIN -- I believe this thread is to be merged with the "LG G7 - Fastboot bootloop [SOLVED]" one - this is the same issue...

vuhothang said:
You can try with usb connected, press and hold volume up before restart to download mode to LGUP flash again (try with 8.0 or fresh download fw).
Click to expand...
Click to collapse
My LG g7 entry only in fastboot mode, not download mode.
---------- Post added at 04:16 PM ---------- Previous post was at 04:14 PM ----------
you can try this link, I try but I did not upload the image in the cmd, translate the page and see it.
https://www.htcmania.com/showthread.php?p=30722058&styleid=58

tripticonachos said:
My LG g7 entry only in fastboot mode, not download mode.
---------- Post added at 04:16 PM ---------- Previous post was at 04:14 PM ----------
you can try this link, I try but I did not upload the image in the cmd, translate the page and see it.
https://www.htcmania.com/showthread.php?p=30722058&styleid=58
Click to expand...
Click to collapse
Same with me when cross-flash from HK region to EU region, always to flashboot or recovery mode.
With usb cable connected with PC (your G7 always in fastboot mode) force restart by press and hold volume down + power until screen turn off, release two button and fast press and hold volume up before LG 7 logo. My G7 boot into download mode.

vuhothang said:
Same with me when cross-flash from HK region to EU region, always to flashboot or recovery mode.
With usb cable connected with PC (your G7 always in fastboot mode) force restart by press and hold volume down + power until screen turn off, release two button and fast press and hold volume up before LG 7 logo. My G7 boot into download mode.
Click to expand...
Click to collapse
hi, the same thing keeps happening to me, the screen goes down in dowload mode for 1 second and immediately goes to fasboot mode

tripticonachos said:
hi, the same thing keeps happening to me, the screen goes down in dowload mode for 1 second and immediately goes to fasboot mode
Click to expand...
Click to collapse
hi
- While holding Volume Up key connect your phone to PC using USB Cable (Don’t leave volume key while connecting)
- Release the Volume UP key as soon as the phone goes into Download Mode.

vuhothang said:
hi
- While holding Volume Up key connect your phone to PC using USB Cable (Don’t leave volume key while connecting)
- Release the Volume UP key as soon as the phone goes into Download Mode.
Click to expand...
Click to collapse
does not work as I said, when connected to the PC with the volume + pressed appears for a second the screen of the download mode and immediately goes to fastboot mode, so I can not do anything with lg up

Makes me nervous to do manual update on my Verizon version now...

ive got this exact same issue.. triedevery way imagined.. no joy.. waiting to hear from my serves provider.. lg cant gelp with a unlock. bin file.. they refered me to my SP.. ? SO ANNOYING..!!

@vuhothang, @tripticonachos, @DenisVelev, @Lith02, @Social_Psycho84, @Prosjak, @Wilmer25
Guys, I called you in one message as it seems we all had experienced the same drastic issue with the phone got bricked on the update process. We all probably used LGUP and on the update somewhere on the %'age progress (in mine it was 91%) the process stopped so we needed to force reboot and after that we got only fastboot menu.
Once trying to enter download mode, upon connecting to USB, the download mode title frame blinks for a split/second and it goes all way into fastboot only, correct?
Having said that - I believe it is vital not only to update how you resolved (or still resolving) the issue but how it happened we stepped in that deep sh!t overall...
On my particular case - I had bought the phone with branded oreo software, what I wanted was to (a) force-upgrade to Pie (as the brand operator is still very late with the Pie update) and (b) unbrand to open or brand Orange as I wanted the VoLTE and VoWiFi working. I used the LGUP 1.14 and tried uppercut but it did not work in my case (probably because of antivirus software something was permanently blocking) so I found the common_dll file which resolved the issue and the progress started. However, as mentioned - at 91% it stopped and phone died. I moved it to LGE service, they replaced the mainboard as it is under warranty. I suspect I used some sort of invalid DLL file, probably that caused the process crashed.
As a postmortem - I regret that in panic I force-rebooted the phone, it was certain the system won't start and now I realize it was also a high risk it will be bricked but you know... just tried to resolve instantly. I wonder what would happen if I would not reboot but leave the phone in download mode (still hold on 91% but still alive) and in that state would connect the phone back into LG Bridge software or LGEtool - possibly it would be recognized by the firmware auto-flasher inspected or fixed and it would reboot itself properly into download to resurrect...who knows.
I am looking forward your status guys - where are you with the fix and actually how did you go into that trouble - so what flash method you used ? You know, to avoid that scenario in future...

ultragliss said:
@vuhothang, @tripticonachos, @DenisVelev, @Lith02, @Social_Psycho84, @Prosjak, @Wilmer25
Guys, I called you in one message as it seems we all had experienced the same drastic issue with the phone got bricked on the update process. We all probably used LGUP and on the update somewhere on the %'age progress (in mine it was 91%) the process stopped so we needed to force reboot and after that we got only fastboot menu.
Once trying to enter download mode, upon connecting to USB, the download mode title frame blinks for a split/second and it goes all way into fastboot only, correct?
Having said that - I believe it is vital not only to update how you resolved (or still resolving) the issue but how it happened we stepped in that deep sh!t overall...
On my particular case - I had bought the phone with branded oreo software, what I wanted was to (a) force-upgrade to Pie (as the brand operator is still very late with the Pie update) and (b) unbrand to open or brand Orange as I wanted the VoLTE and VoWiFi working. I used the LGUP 1.14 and tried uppercut but it did not work in my case (probably because of antivirus software something was permanently blocking) so I found the common_dll file which resolved the issue and the progress started. However, as mentioned - at 91% it stopped and phone died. I moved it to LGE service, they replaced the mainboard as it is under warranty. I suspect I used some sort of invalid DLL file, probably that caused the process crashed.
As a postmortem - I regret that in panic I force-rebooted the phone, it was certain the system won't start and now I realize it was also a high risk it will be bricked but you know... just tried to resolve instantly. I wonder what would happen if I would not reboot but leave the phone in download mode (still hold on 91% but still alive) and in that state would connect the phone back into LG Bridge software or LGEtool - possibly it would be recognized by the firmware auto-flasher inspected or fixed and it would reboot itself properly into download to resurrect...who knows.
I am looking forward your status guys - where are you with the fix and actually how did you go into that trouble - so what flash method you used ? You know, to avoid that scenario in future...
Click to expand...
Click to collapse
I investigated the problem of why it stopped at 98% and it is because of the issue of the ddl file, before any flash by lg up it is better to prevent and replace the common ddl file, which I did not do. just in case, I still have the phone in fastboot mode, I have not been able to find a solution yet.

So.. Ive actually managed to get outta fastboot and into quallcom9008 mode.. (Deliberately..) But.. Cant do **** ib that mode just yet.. Software not available.
Now i read about resetting while in thar mode via test points. Will let ya know if there comes anything from that..
(Btw... To get into 9008 mode.. Hold power and vol down while in that gawd aweful fastboot tutorial menu.. And tap the vol up button fast and repeatedly.. If it resets and you have a blank screen.. Ya there..!! If it just resets to.. Well. Fastboot.. Ya didnt rap fast enough.. Do it again.
To exit 9008 mode.. Just hold power and vol down till bootlogo comes up..
It aint much. But maybe some1 more clever can use that info and get us outta that gawd damn menu.. plz..

If you are stuck in fastboot loop see this post:
https://forum.xda-developers.com/showpost.php?p=79779837&postcount=13

I hope you fixed your issue but if anyone needs it here: go into edl mode and flash laf_a and laf_b. these are download mode files. I will attach these files later today