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.
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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.
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tried both yet still unable to connect.

emzgames said:
tried both yet still unable to connect.
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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.
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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.
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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.
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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.
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tnx man, but no luck..

Tried flashing a custom rom?

[Q] (HELP) Cant Enter Download mode

I have a plan to re-flash my LGOGP E988 stock kitkat not rooted and i already downloaded the files i need but when i try to enter download mode based on what i read in all thread regarding to my unit (vol+ & vol - + usb plug into computer), thers no luck for me.. It always go to charging and not in download mode. I already installed required driversCan you help me?
Combination i tried that was no luck(usb plug in computer);
1. Off phone>remove battery>hold both volume>reinsert battery>plug micro usb
2. Off phone>hold both vol.>plug micro usb
3. Off phone>hold +vol >plug micro usb(vice versa, also use -vol)
4. Off phone> hold both vol. >Power button (go to hard reset)
5. Remove battery> hold both vol.>insert micro usb
Please help me i will update things that i already try.
Thanks in advance..
And i know thia will be benefit other members that getting hard times to enter download mode.

robtoman said:
I have a plan to re-flash my LGOGP E988 stock kitkat not rooted and i already downloaded the files i need but when i try to enter download mode based on what i read in all thread regarding to my unit (vol+ & vol - + usb plug into computer), thers no luck for me.. It always go to charging and not in download mode. Can you help me?
Combination i tried that was no luck;
1. Off phone-remove battery-hold both volume-reinsert battery-plug usb to computer
2. Off phone- hold both vol.-plug usb to computer
3. off phone- hold +vol -plug usb tomputer (vice versa alao use -vol)
4. Off phone- hold both vol. Power button (go to hard reset)
Please help me i will update things that i already try?thanks in advance..
Click to expand...
Click to collapse
Skip the reinsert battery part in your item #1:
1) Remove battery
2) Hold Volume plus and minus keys down
3) Insert USB cable while still continuing to hold down those two buttons.
WIthin 1-2 seconds you should have download mode. When download mode appears, then re-insert battery. For sure you're not going into charging mode with no battery to charge. This is the method I always use, and it always works (aside from hard-brick situations, but you can access battery charging mode/graphics, which surely means that ain't you).

not works.
culot said:
Skip the reinsert battery part in your item #1:
1) Remove battery
2) Hold Volume plus and minus keys down
3) Insert USB cable while still continuing to hold down those two buttons.
WIthin 1-2 seconds you should have download mode. When download mode appears, then re-insert battery. For sure you're not going into charging mode with no battery to charge. This is the method I always use, and it always works (aside from hard-brick situations, but you can access battery charging mode/graphics, which surely means that ain't you).
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I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?

robtoman said:
I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?
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What does your computer say when you plug it in? If in Windows check Device Manager and see what your phone is being recognized as. Can you access the phone's contents via USB cable from your computer? Does ADB recognize it at all? Or does it just loop like that, not starting?
Also, it sometimes takes several tries to get it into download mode, as if you're holding the buttons down and not timed just right, the phone ignore your attempt. Make sure you do not let go of both volume buttons even after you plug in the USB cable, you must continue to hold them down for a couple of seconds (until the DL mode appears). Don't even think about putting the battery back in until you see that download mode box. Try that a few times maybe? If it doesn';t work ,maybe you're boned.

robtoman said:
I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?
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Click to collapse
remove battery and place it again. then press both volume+ and Volume - . By keeping pressed both buttons insert your usb cable. don't release pressed buttons until its in download mood. by the way install unified adb driver for android by koush if your using windows 8.1 otherwise lg official driver is ok

[Q] Can't open download mode to flash with ODIN on galaxy grand duos!!!

Hello
Im trying to flash a rom with ODIN on my galaxy grand duos i9082. I try with volume down + home + power and with volume up + power and all times it takes me on recovery mode.
I tried also with adb (adb reboot download) but it restart the phone only no download mode.
Please any idea how to enter in download mode with another method?

omi17 said:
Which Firmware are u using?leaked or official? did you tried jig?
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I think it have the official becouse the phone is new from the box. No i havent try jig.

el-xhey said:
I think it have the official becouse the phone is new from the box. No i havent try jig.
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Hii friend what is a problem with phone why r u flashing phone? please explain to enter download mode you should press vol down + Home+Power (press power at last because if you start with power it will get turn on)

el-xhey said:
Hello
Im trying to flash a rom with ODIN on my galaxy grand duos i9082. I try with volume down + home + power and with volume up + power and all times it takes me on recovery mode.
I tried also with adb (adb reboot download) but it restart the phone only no download mode.
Please any idea how to enter in download mode with another method?
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Click to collapse
I have exact same issue. All The button combinations boot to recovery.
vol down+menu+power and
vol up+menu+power boots into recovery everytime.
adb reboot bootloader command reboots the phone to a dark screen with "fastboot mode...." written at the left bottom. pls help

I just discovered there's an issue with my imei too. both imei show invalid. i do not have an efs backup and i can't boot into download mode meaning odin is out of it. Any help would be appreciated.

is there any custom rom installed if yes then usually in reboot option of it u will get reboot to covery or download mode etc via tht u can enter or when booting up press home button volume down button and while pressing power this on, or if u have rooted ur phone use xposed modules and via that change boot menu options and via that restart into download mode, hopeit works....

Search "How to make USB JiG" thread. I got 2 phone with Home button not functioning. USB JIG is my solution to both.
Good luck
Sent from my GT-I9082 using XDA Free mobile app

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?
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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)
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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...
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Click to collapse
Please help. I am stuck too... No download mode is insane

Need help using CWM to recover data

So my screen blacked out and I would like to attempt and retrieve the information off of my phone. I have an idea to use the CWM I have installed on my phone and from there mount it. But since I cannot see the screen, I was hoping somebody could tell me the number of presses of each button so I can mount it. Thanks!

joecarp said:
So my screen blacked out and I would like to attempt and retrieve the information off of my phone. I have an idea to use the CWM I have installed on my phone and from there mount it. But since I cannot see the screen, I was hoping somebody could tell me the number of presses of each button so I can mount it. Thanks!
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Click to collapse
not sure if cwm will help, but twrp 3 will definitely help, i want you to boot into download mode and flash twrp 3 using Odin, and then boot into recovery.
TWRP 3 has MTP enabled by default, so when you're in TWRP and connected your phone to PC, you will see your phone on PC and will be able to copy anything you want.
also you can use adb pull commands but it requires usb debugging on in your rom.

MigoMujahid said:
not sure if cwm will help, but twrp 3 will definitely help, i want you to boot into download mode and flash twrp 3 using Odin, and then boot into recovery.
TWRP 3 has MTP enabled by default, so when you're in TWRP and connected your phone to PC, you will see your phone on PC and will be able to copy anything you want.
also you can use adb pull commands but it requires usb debugging on in your rom.
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Should I be able to do all this without the use of my screen?

joecarp said:
Should I be able to do all this without the use of my screen?
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yes, you will do it blindly, but it's not hard.
you press power + home + volume down for 3 seconds, then press volume up, and connect your phone to PC, then flash the TWRP 3 using Odin,after the flash is done, remove battery, and insert again, then hold the power + home + volume up for 4 seconds, the release the power and keep holding the other 3 buttons for another 3 seconds then release, by now it should be in recovery mode, now connect to PC and you should see your phone and all its content.

MigoMujahid said:
yes, you will do it blindly, but it's not hard.
you press power + home + volume down for 3 seconds, then press volume up, and connect your phone to PC, then flash the TWRP 3 using Odin,after the flash is done, remove battery, and insert again, then hold the power + home + volume up for 4 seconds, the release the power and keep holding the other 3 buttons for another 3 seconds then release, by now it should be in recovery mode, now connect to PC and you should see your phone and all its content.
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Alright thanks, I'm going to go try it when I have some more time. Thank you a lot

joecarp said:
So my screen blacked out and I would like to attempt and retrieve the information off of my phone. I have an idea to use the CWM I have installed on my phone and from there mount it. But since I cannot see the screen, I was hoping somebody could tell me the number of presses of each button so I can mount it. Thanks!
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Click to collapse
How about just turn the phone on and connect a USB and tranfer everything to your PC ?(Donot requires screen)

Gurkanwal Chauhan said:
How about just turn the phone on and connect a USB and tranfer everything to your PC ?(Donot requires screen)
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good question.
he can't do it in two cases:
1- if he is using android 6.0+
2- if he is using a password, PIN or a pattern in his lock screen.
i believe he should have tried your suggestion already, it would be a shame if he didn't because it's an Obvious thing.
however, i should have mentioned that as well...