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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.

[CRITICAL] [Q] Help with Hardbrick!

Ok, so my Samsung Galaxy Trend Plus has stopped completely operating. When you turn it on, it shows the Samsung Trend Plus logo, but before the boot animation, it gets stuck to a black screen (The screen color is black, the screen does not close). Whenever I press any of the phone's buttons, It will vibrates. It does that every 4-5 times and then theres a long vibration. The phone is rooted, but it runs for about 5 months with root. Im using an alcatel less powerfull charger to charge, due to the reason the official samsung one was broken. Yesterday, I mengled around with GravityBox (But I have GravityBox and Xposed framework since root) on the Navbar settings, and after the phone rebooted, It constantly said [SystemUI has stopped]. This had happened to me like a month ago again, but then I just reflashed the Official Rom via Odin. This time, I chose to just delete SystemUi's apk from /system/apps and then copy it back to the phone from my pc. The phone worked perfectly for a day after that, but when I went to take it out of my pocket at the evening, it was closed, even though 1 hour ago it had like 37% battery. So, I charged, and when It finished, I went to open and the Black Screen problem came out. I can't neither boot in recovery nor Download Mode

zarkotom said:
Ok, so my Samsung Galaxy Trend Plus has stopped completely operating. When you turn it on, it shows the Samsung Trend Plus logo, but before the boot animation, it gets stuck to a black screen (The screen color is black, the screen does not close). Whenever I press any of the phone's buttons, It will vibrates. It does that every 4-5 times and then theres a long vibration. The phone is rooted, but it runs for about 5 months with root. Im using an alcatel less powerfull charger to charge, due to the reason the official samsung one was broken. Yesterday, I mengled around with GravityBox (But I have GravityBox and Xposed framework since root) on the Navbar settings, and after the phone rebooted, It constantly said [SystemUI has stopped]. This had happened to me like a month ago again, but then I just reflashed the Official Rom via Odin. This time, I chose to just delete SystemUi's apk from /system/apps and then copy it back to the phone from my pc. The phone worked perfectly for a day after that, but when I went to take it out of my pocket at the evening, it was closed, even though 1 hour ago it had like 37% battery. So, I charged, and when It finished, I went to open and the Black Screen problem came out. I can't neither boot in recovery nor Download Mode
Click to expand...
Click to collapse
So, it seems your battery is dead, this is nothing to do with software (unless the stock rom killed it), so, buy a new one, or see if it is covered by the warranty

Reply
Yes, but when I put it in the charger, it shows the charging animation....... And then if the battery is dead, how can it power the vibrations and the screen?

KkdGab said:
So, it seems your battery is dead, this is nothing to do with software (unless the stock rom killed it), so, buy a new one, or see if it is covered by the warranty
Click to expand...
Click to collapse
I just tried a different battery, because I have a second Trend Plus, which works perfectly. It still has the same problem.

zarkotom said:
Yes, but when I put it in the charger, it shows the charging animation....... And then if the battery is dead, how can it power the vibrations and the screen?
Click to expand...
Click to collapse
Oh sorry,didnt read properly, I will give you some advice tomorrow. Need some sleep.
Sent from my HUAWEI Y210-0100

[SOLVED] Reply
Sorry for answering a few months later, but I have to say that I had found a solution, which was the fact my Home Button wouldn't be presed in order to get in DOwnload Mode.
I appreaciate all your help.

nexus 5 stop working! no sign of life! nothing! don't let it die!

Hello all,
So I have been using my phone since it was released back in 2013 with no problems except battery very lately. I'm rooted on the stock 5.1.1 with no modification whatsoever, no xposed too. As I mentioned my battery was not lasting long at all. I was watching a video on vimeo on chrome with like 6 percent battery and all of a sudden the phone shut off!
I plugged it in assuming the battery died but there was also no sign of charging on the phone too! It just looks like dead dead phone. I left it on charge for a while, still nothing, try to connect to pc to see if it is recognizable, still nothing... Screen doesn't power on, no notification light, power button and volume button combinations to boot it to the recovery doesn't work as well. Whatever I tried, I didn't get any respond back from the phone.
Has anyone experience such thing before? Or what else I should try to make it work again?
I don't wanna say good bye to my awesome nexus 5 like that. Any help is appreciated

Xperia m2 battery glitch,Sudden death like

Hello everyone!
So i'm experiencing some weird glitches/bugs on my phones battery which makes it unusable,I believe this was caused by my corrupted sd card,but not sure
So:
-I can't use the device without the charger,if I disconnect it it will immediately shut down
-When I connect it to the charger it starts flashing red light just like the sudden death syndrome, but now it even flashes the Sony logo with itself like it tries to boot up but has not enough battery left,even when I leave it charge for hours it will still show the white battery icon.After some time it will act like its not charging,no flash,not trying to boot.
-Somehow i managed to turn it on by messing around with the Vol up+Power combo,successfuly charging starts at 0% goes up to about 12% and after it reaches it, the indicator shows no charge and 99% of capacity(And drains slowly,right now I'm using it and it is at 98%).But as I said I can't use it without charger so it died again when I disconnected charger .
I Believe a few M2 users (or even other xperia users even) having this problem too,I also did not root it,it is under warranty (I will take it to repair if we can't fix this).

Update:
The phone started charging after the 12-99% glitch,I left it to charge for about 1-2 hours and the led started glowing green and the indicator on the upper right corner showed 100%,I can finally use it without charger but it turns off by itself if I'm not using it for about 10 minutes.

Not heard of it before, I'd say if it's stock and still covered by the warranty. Get it looked at. Have you tried doing a software repair via Sony's PCC it may help of you haven't tried it and it's the first thing Sony will tell you try.
D2303,18.3.1.C.1.15 kk, deodexed, debloated, rooted, philz touch recovery, bravia engine 2+x-reality+z3 super vivid, viper audio, xposed mods.

Thanks I will try it and post it if I get results,I believe that some people having this problem, since its fully stock.My friend who works for a Samsung service says it might be an issue with that thing (forgot its name) that tells the processor the battery percentage,it might be telling it it is on 0%

xperia z2 shuts off randomly after mod....please help

i have an xperia z2 with a custom flashed rom, the existence rom for the xperia x i believe as well as an audio boosted mod for the headphone jack as well several other mods.
i've noticed that my phone never wakes up and refuses to power on even if i hold vol down and the power button... but i found a way to turn it on... i have to actually put the phone to charge and then turn it on normally...... this means i have to walk around with a charger or a power bank and i dont know it would get any worst.
any suggestions would be greatly appreciated