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[Completed] LG Optimus G Pro F240L bricked, no boot, no download mode, no charging, please help.

Am having this LG Optimus G Pro F240L for about a year. I have rooted it 2 months ago via CWM, but am on stock ROM. Two months ago, it started behaving badly, as it Front Soft Keys stopped working, and it pull me out of every app, seems like back key is being pressed without actually touching it (though the keys were not working actually). I have installed Ultimate Dynamic Navbar Pro app to get the Search, Back, Home, Menu,and 3 Dot keys on display, which helped me to keep this phone working easily. Until last night, everything was working smoothly, it had no other problem than those soft keys not working.
Last night, I didn't put it on charging, as I used to do regularly. It was around 40% battery when I put phone on my desk before sleeping. Today when I tried to unlock it, pressing unlock key, it showed nothing. I pressed it long thinking it might be off, but nothing happened, so I put it on charging, thinking the battery is drained completely. but even after an hour, it doesn't seems to be charging as bo red light was there on home button. I pulled out battery, wait for around 5 mins and put battery there, but no luck. I then grabbed my multimeter to check battery voltages, it shows 3.97V. Now when I put the multi-meter probes on VCC(Red probe) and GND(Black probe) pins on phone, it shows 0.434V without battery and 0.560V with battery inserted.
I charged my battery a little bit potential difference with an universal battery charger, upto 4.12V, but still the phone is not booting. I also checked for the power button failure, as there might be a chance of loose contact of pins underside the board(read somewhere), but it was fine.
Am not able to figure out where is the fault. If uUSB charging jack is crappy, then after charging the battery from other source must have worked, also if charging jack is fine, then the potential difference across VCC and GND must be around 4+Volts which is merely around a half volt.
I tried to get into CWM but no luck, I tried to get into download mode(pressing both volume keys and inserting uUSB just after it), but still no luck. I don't know how it got bricked, as I haven't made any changes recently, I was using it at a daily go. God knows what happened to it. It is out of warranty, again am out of luck.
please help me....
I have only LGFlastool_1.5.10.1120, LGUnitedMobileDriver_S4981MAN37AP22_ML_WHQL_Ver_3.8.1, WindowsLGFirmwareExtract-1.2.1.0-Release, a Windows 7 and a Windows 8 pc and a linux Ubuntu distro, a fast broadband internet, Android SDK installed with adb drivers, and a knowledge of how to root and flash ROMs(had several android phones over past years, rooted and installed several ROMs like cyanogenmod on Samsung Galaxy Wave II, Samsung Galaxy S I9000, Sony Ericsson Xperia Arc, Sony Xperia J, Samsung Galaxy Ace S5830, and a several ROMSs like PACMAN, SlimROM, SpeedDroid, MarvellousSense on HTC Wildfire S A150E) and flashing CWM recoveries aka recovery.img and boot.img from cmd and Flashtools.
I need your help, as all this knowledge is useless without your help, please help me, am stuck here so badly. I'm ready to take chances, please I beg you...

00daniyal00 said:
Am having this LG Optimus G Pro F240L for about a year. I have rooted it 2 months ago via CWM, but am on stock ROM. Two months ago, it started behaving badly, as it Front Soft Keys stopped working, and it pull me out of every app, seems like back key is being pressed without actually touching it (though the keys were not working actually). I have installed Ultimate Dynamic Navbar Pro app to get the Search, Back, Home, Menu,and 3 Dot keys on display, which helped me to keep this phone working easily. Until last night, everything was working smoothly, it had no other problem than those soft keys not working.
Last night, I didn't put it on charging, as I used to do regularly. It was around 40% battery when I put phone on my desk before sleeping. Today when I tried to unlock it, pressing unlock key, it showed nothing. I pressed it long thinking it might be off, but nothing happened, so I put it on charging, thinking the battery is drained completely. but even after an hour, it doesn't seems to be charging as bo red light was there on home button. I pulled out battery, wait for around 5 mins and put battery there, but no luck. I then grabbed my multimeter to check battery voltages, it shows 3.97V. Now when I put the multi-meter probes on VCC(Red probe) and GND(Black probe) pins on phone, it shows 0.434V without battery and 0.560V with battery inserted.
I charged my battery a little bit potential difference with an universal battery charger, upto 4.12V, but still the phone is not booting. I also checked for the power button failure, as there might be a chance of loose contact of pins underside the board(read somewhere), but it was fine.
Am not able to figure out where is the fault. If uUSB charging jack is crappy, then after charging the battery from other source must have worked, also if charging jack is fine, then the potential difference across VCC and GND must be around 4+Volts which is merely around a half volt.
I tried to get into CWM but no luck, I tried to get into download mode(pressing both volume keys and inserting uUSB just after it), but still no luck. I don't know how it got bricked, as I haven't made any changes recently, I was using it at a daily go. God knows what happened to it. It is out of warranty, again am out of luck.
please help me....
I have only LGFlastool_1.5.10.1120, LGUnitedMobileDriver_S4981MAN37AP22_ML_WHQL_Ver_3.8.1, WindowsLGFirmwareExtract-1.2.1.0-Release, a Windows 7 and a Windows 8 pc and a linux Ubuntu distro, a fast broadband internet, Android SDK installed with adb drivers, and a knowledge of how to root and flash ROMs(had several android phones over past years, rooted and installed several ROMs like cyanogenmod on Samsung Galaxy Wave II, Samsung Galaxy S I9000, Sony Ericsson Xperia Arc, Sony Xperia J, Samsung Galaxy Ace S5830, and a several ROMSs like PACMAN, SlimROM, SpeedDroid, MarvellousSense on HTC Wildfire S A150E) and flashing CWM recoveries aka recovery.img and boot.img from cmd and Flashtools.
I need your help, as all this knowledge is useless without your help, please help me, am stuck here so badly. I'm ready to take chances, please I beg you...
Click to expand...
Click to collapse
Maybe hardware issue.
I see that you have already posted on your device specific help forum (http://forum.xda-developers.com/optimus-g-pro/help/lg-optimus-g-pro-f240l-bricked-boot-t2862582).
That's the better place to get help IMO.
Hope that you get some advices there.
Will close this thread here now.
My tapatalk signature:
Device: SGS5 (SM-G900F)
ROM: AllianceROM v5.1
Kernel: Stock G900FXXU1ANE2
Recovery: PhilZ-touch
Modem: G900FXU1ANG2
If you have any question about or any issue with your SGS2, just ask in the New members friendly Q&A thread.
... for the SGS5, just ask in the Noob friendly S5 All in one support thread
If you need general help/assistence, please go to XDA-Assist.

[Completed] Xperia Neo V weirdest problem ever ( wont turn on, but sometimes will?! )

Hello xda community ( first post )
So i own a sony Xperia neo V and i have a very weird problem. So I left it charge overnight and the morning i tried to turn it on but it wouldnt turn on. I tried a lot of things until 1 day later after removing sim and sd and pressing vol up+power it turned on. I backed up everything and tried to turn it off and again on but again it wouldnt!
O dissasemplied it and cleaned everything in case there is a short circuit. i unplugged and repluged everything i could inside it.
I left the battery out for 1 month.
I tried the battery on my xperia tipo and it was working fine.
I made a hard reset.
I made a topic on sony site they didnt help at all, they just said the obvious things.
Now I am trying this forum, my last hopes to make it work again. Right now i turned it on and it works fine! The power button works always in both press and long press. The screen and touch screen works fine. Everything works properly. No sim or SD inserted.
Help
Ask me whatever you want i will try to answer everything. Please dont tell things like remove battery and stuff i already tried these.
The weird part is that everything works fine! but still it wont turn on 99% of times. i tried to keep track of the things i did to find a pattern of things but it turns on totaly randomly. There is no procedure that has more success than just pressing the power button and hoping to turn on.
Additional info: It has suffered water damage some times in the past and many falls from about 1 meter. It always worked after leaving it on the sun for a day or two without the battery and turning it on. I found no rust or corrosion signs when i dissasemplied.
Thanks!
EDIT: I found out that if i change the pressure i apply on the battery connectors the device has a higher chance to turn on!

Hi,
Try posting your question here with all relevant details:
Xperia Neo, Pro Q&A, Help & Troubleshooting
The experts there may be able to help.
Good luck!

Xperia Z5 completely unresponsive

Been using the Xperia Z5 (E6653 Rev 4) from Bell over the last month with mostly no issues (expect the phone freezing once). However, the phone just went completely dead.
I had about 70% battery, was playing a game and had Chrome open. I looked up a video on youtube because my sister asked about it. I was just about done so I just pressed the multitask button to close all the apps (just those 3).
After they were all closed, suddenly the phone froze, . Phone did not respond to any button press. About 30 seconds later the screen turned off by itself. Still no response. I figured I would do the force shut down by pressing and holding the off button beside the SIM card. After a few seconds of holding it down, the phone vibrated 3 times. I figured it was off so I tried to restart it, but no response again from the buttons. LED light also does not come on when I plug it in nor does my computer recognize the phone.
Is the phone dead and I should take it back to Bell? Or am I missing some kind of weird button combination or something in order start the phone again? If someone knows something please let me know. Thanks.

Try again the buttons & use the USB wallcharger to power it on.
Sent from my E6653 @ XDA Portal

tried all the buttons with the USB plugged in. still no response.
I also tried leaving the USB plugged in for a while. I can't say I know how electronics work in situations like these... but I don't think it's even charging the battery since the phone still feels really cool to the touch.

PaulAAA said:
tried all the buttons with the USB plugged in. still no response.
I also tried leaving the USB plugged in for a while. I can't say I know how electronics work in situations like these... but I don't think it's even charging the battery since the phone still feels really cool to the touch.
Click to expand...
Click to collapse
Strange,
Then you should use SEUS / PC Compagnion to repair your phone.
If that won't work, go back to the shop.\
Good Luck

Unfortunately, the computer doesn't recognize the phone. It says "one of the USB devices has malfunctioned and windows does not recognize it".
I figured it was dead and I had to take it back to the store. I will give them a call to see if they are open today.
Very ironic since earlier in the day I was just thinking about how happy I was with the Z5 and then this happens without warning.

You try pressing volume up while pressing power?

yes I did. I tried and held it for 20 seconds as I read somewhere. then I tried Volume Down too... I don't know if I should have done that first, as I attempted the Off button method right away because that is what I saw on the Sony website.
I phoned Bell, and they also told me to do the Volume Up+Power. I told them it didn't work and they said they will need to send it in for repair.
edit: the guy at the Bell store says the phone is most likely fried, so it needs to be sent in for repair. I am the unlucky first, apparently. Though he says it was pretty common for other Xperia devices.

That sucks. I don't mess with the hard reset button, ever.

"Pretty common on other xperia devices? " I think he's messing with you. I have had alot of xperia devices and not a single one was fried before. On the other hand, my friends lg g3 and some galaxy phones fried before.

Me too,
never had problems with my SE or Sony Xperia 's.
Had a K700i, X10i, Arc (Great slim smartphone), Xperia T, Z1 and now Z5.
The best smartphones imho, only miss one thing.. Easy Rooting on LB
Sent from my E6653 @ XDA Portal

[Completed] HTC One M8s won't boot

Hey guys,
I've got a problem and since I'm not an expert I've got into a dead end.
I was trying to root my HTC One M8s. I managed to unlock the bootloader, but when I tried to flash a custom recovery (TWRP 2.7.0.2) it went completely black. Since then only reactions it has are the red LED is on, if I put it on charge the turned off charge screen comes on. And if I try to hold the power button and volume down, after 10 seconds it goes black again, even the red LED, like it tries to reboot, but it after that it only goes back to the charging screen if it's on charge or only the red LED if it isn't. I can't install factory image, because the computer won't recognize the device.
Do you, guys have any suggestion or is it completely bricked?
Any answer is appreciated!

hegtam said:
Hey guys,
I've got a problem and since I'm not an expert I've got into a dead end.
I was trying to root my HTC One M8s. I managed to unlock the bootloader, but when I tried to flash a custom recovery (TWRP 2.7.0.2) it went completely black. Since then only reactions it has are the red LED is on, if I put it on charge the turned off charge screen comes on. And if I try to hold the power button and volume down, after 10 seconds it goes black again, even the red LED, like it tries to reboot, but it after that it only goes back to the charging screen if it's on charge or only the red LED if it isn't. I can't install factory image, because the computer won't recognize the device.
Do you, guys have any suggestion or is it completely bricked?
Any answer is appreciated!
Click to expand...
Click to collapse
The m8 and m8s are different devices and it looks like you installed the wrong recovery did you install this one ?
http://forum.xda-developers.com/htc-one-m8/one-m8s-general/make-custom-recovery-htc-one-m8s-t3114245
it does look like it's out of date
http://forum.xda-developers.com/htc-one-m8/help/htc-one-m8s-wont-boot-recovery-t3219219
As long as your pc recognises your phone you should be ok, try asking in this thread here
http://forum.xda-developers.com/htc-one-m8/help/htc-m8-blank-screen-logo-screen-wont-t3394286
the experts there will be able to help you
Good Luck
Sawdoctor

Fixed!!!
sawdoctor said:
The m8 and m8s are different devices and it looks like you installed the wrong recovery did you install this one ?
http://forum.xda-developers.com/htc-one-m8/one-m8s-general/make-custom-recovery-htc-one-m8s-t3114245
it does look like it's out of date
http://forum.xda-developers.com/htc-one-m8/help/htc-one-m8s-wont-boot-recovery-t3219219
As long as your pc recognises your phone you should be ok, try asking in this thread here
http://forum.xda-developers.com/htc-one-m8/help/htc-m8-blank-screen-logo-screen-wont-t3394286
the experts there will be able to help you
Good Luck
Sawdoctor
Click to expand...
Click to collapse
The PC didn't even recognized it, like nothing would be plugged-in.
But eventually, I found the solution. I share it, maybe it's gonna be useful for someone in the future.
I had to take the whole phone apart, which was quite an experience, considering the built of the phone. But there are some guides out there.
https://www.youtube.com/watch?v=CJtVKlmEbcU
https://www.ifixit.com/Guide/HTC+One+M8+Battery+Replacement/41650
Detach the battery, wait a couple seconds and then reattach it again, push the power button and it was like nothing happened. Except the battery was on 5% what was odd because I was trying to charge the whole previous night!
Anyway, it is a happy end!
Thanks for the advice, though.
Cheers!

hegtam said:
The PC didn't even recognized it, like nothing would be plugged-in.
But eventually, I found the solution. I share it, maybe it's gonna be useful for someone in the future.
I had to take the whole phone apart, which was quite an experience, considering the built of the phone. But there are some guides out there.
https://www.youtube.com/watch?v=CJtVKlmEbcU
https://www.ifixit.com/Guide/HTC+One+M8+Battery+Replacement/41650
Detach the battery, wait a couple seconds and then reattach it again, push the power button and it was like nothing happened. Except the battery was on 5% what was odd because I was trying to charge the whole previous night!
Anyway, it is a happy end!
Thanks for the advice, though.
Cheers!
Click to expand...
Click to collapse
That's great news so glad you fixed it
Sawdoctor

Sony Xperia X5 won`t start after the last OTA update..???

Hi yall and Happy New 2017 to all comrades
Gentleman,
I have an annoying issue with my Xperia Z5. Yesterday I finally agreed to let the automatic update commence after post-poning the damn thing for a week. Started at 48% of battery, the phone switched of and underwent with the system update installation as usual. Nothing extraordinary throughout the the whole process - the progress bar filled up all the way to 100% and the Sony attempted a reboot. Unluckly the reboot did not happen. Blank black screen with no signs of life in it whatsoever.. Holding down the Power Button doesn`t change anything. Holding down the Power Button + Volume up / Volume down (any kind of combinations with these three) doesn`t work as well. Sticking the charger in is the only thing that makes a little difference where the LED will start flashing red periodically , but not holding solid red light as it would have been charging. Holding down the Power Button until the charger is plugged makes the led solid red, but as soon as I let go on the button the light vanishes too..
This has been well frustrating already. I tried to hook it up to Sony Companion (their mumbo-jumbo soft for sony devices~pc) but no life doctor, I read no pulls.
My phone is not rooted and was carrying the stock Android Marshmallow (don`t even now the version).
I used to root every single device I had since 2012 with that including HTC Sensation XE, HTC HD2 convertion from Windows to Android, Samsung Galaxy S2, Samsung Galaxy S3. With this beauty i decided to take the other way of keeping things simple and just for the sake of my social life and my miss, as I get pretty addicted once it comes to custom ROMs and such. Put in other words - although I don`t want to go there I would if needed to get my phone back to life, as I start work back tomorrow and half of my job is receiving 60+ calls and emails and i`m kinda f*ck#d without my smartphone. Unfortunately I do not own any other device which would cover me for the time being nor friend that would help.. - im friendless
Anybody ? Resurrection ideas plleaaaaasseeee

Is it enter fastboot or flashmode?
If no,what happened if you connect it to computer.

Same thing happened to me when upgrading from .253 to .305 last October...
I was at 60% and left the phone charging while it updated and then the phone just died.
No way to boot, red LED when plugged in to charge and not detected by any computers, so no possibility to fastboot...
Also fully stock, but makes me miss my old rooted HTC M7...
Contacted Sony and was told that I would have to ship it to Singapore and pay both ways and for repairs (which would cost the same as a new Z5), so i just bought a new E6603 for my sister and took her E6653. Sony rep also told me not to update from OTA, but to use Xperia Companion. Seriously?!To provide OTA's but we're not supposed to use the?! I ran CM Nightlies on my M7 for over a year and never had any issues with OTA builds/dirty flashes!
Probably won't be buying another Sony phone (for myself or any friends or relatives) after this. You kill my phone with your update and then tell me that you wont cover the repair/replacement?!

just flash newest fimrware using flashtool, probably destoryed boot.img nothing serious

meho123 said:
just flash newest fimrware using flashtool, probably destoryed boot.img nothing serious
Click to expand...
Click to collapse
Ok, I`m willing to try that. Any chance you could advise me to solid working flashtool and a thread with a step by step bootloader unlocking + flash + root guidance ?

Try first if your phone can goes to flashmod/fastboot
If your pc detect your phone as QHUSB_DLOAD than it's a hardbrick and a motherboard replacement is needed, next time NEVER use ota on a rooted/unlocked bootloader
What i can say is that yourdevie is fota bricked
Edit: similar case :https://forum.xda-developers.com/showthread.php?t=1126358

If your phone can enter fastboot/flashmod this is no big deal, just flash a new firmware the one you want with flashtool but by excess of prudence check all case in wipe section before flashing, now you'll be good to go, you'll just have to set all you thinks back, but I guess you prefere this to a dead phone

Mario_Shinobi said:
Ok, I`m willing to try that. Any chance you could advise me to solid working flashtool and a thread with a step by step bootloader unlocking + flash + root guidance ?
Click to expand...
Click to collapse
http://www.flashtool.net/downloads.php download latest
i will help you in unlocking

Just to make something clear - I haven`t done anything to the Sony software-wise. It is as stock as it could be and all locked.
I will attempt to run it over the weekend as i`m tide on resting time lately.
Cheers for your help guys

Hi,
Good luck, my E6683 has the same problem last november no way to repai it.
Tell me if you find a solution.