HALP!! BLACK screen but turn off menu working?? - LG K10 Questions & Answers

So this is weird. I was debloating this K10 (m250f) and I suposse I accidentally deleted an important package (sadly, i dont have the list of packages I deleted).
When rebooting it starts normally on LG logo, then "android is starting , 100%, dont turn off " , and afther that, the LG logo for some good minutes, to end in a Black screen. EXCEPT, when I press the back button to turn off, the normal turn off menu appears normally (the "power off, reboot, fly mode" menu), so the phone is not "dead" .
I formatted to factory mode from the device, but nothing. Then I installed the official firmware with LG UP, resulting in success from the install, but the problem is still there , abeolutly no change.
I thought this official firmware with LG UP had to fix everything, loke, from facroty, I cant believe it still happens, the same exact thing.
so PLEASE if anyone has any ideas pleeease!!
((... its my moms phone so I really have to revive it :c))

Related

LS990 stuck on Firmware Update screen

Looked everywhere but couldn't find an answer to this problem.
My LS990 was on a MM ROM with TWRP recovery. I tried to install an app from another phone with Titanium Backup (Install App + Data) and it hung for a long time and then shut off. When I turned it on, it got to the startup animation and the froze. I removed and replaced the battery several times but always with the same result. Trying to boot into Recovery Mode got me to a blue screen, then it shut off.
I went into download mode and tried to flash LS990ZV4_04.51101 stock with LGFlashTool (which I have done before successfully). It only got to about 60% before stopping and shutting off. Now whenever I turn the phone on, after showing the LG logo it goes straight to the Firmware Update screen (without showing "download mode" first).
When I press Volume Down + Power it shows "Recovery Mode - loading..." for a couple of seconds and then shows Firmware Update.
On Device Manager the phone shows up as "LGE Mobile USB Serial port" (not AndroidNet)
When I tried flashing stock again with LG Flash Tool it gets to 38% and hangs forever. (done this several times)
I have pictures but XDA wont let me post outside links yet.
Is there anything I can do besides trying to short the pins?
I see that when I connect the phone to the PC without the battery inside it shows up as "Unknown Device".
Could I perhaps do something with that?

LG G3 (D851) - Boot loop

Essentially, whenever I try to turn on the phone, it tries to boot, gets to the LG logo, and then goes blank, returns to the LG logo, goes blank... and so on.
What I've tried: Booting into download mode gives me a firmware update menu that stays at 0% (Edit: Computer cannot read the phone during this). Cannot boot into anything else but a reset because it reboots too quickly. But, I cannot reset anyway because of very necessary data on the device.

LG G3 (D851) - Reboot loop

Essentially, whenever I try to turn on the phone, it tries to boot, gets to the LG logo, and then goes blank, returns to the LG logo, goes blank... and so on. Like this: https://youtu.be/OuW-88ezNDE What I've tried: Booting into download mode works, but my computer does not read the device with anything (e.g. LG Flash Tool crashes when I press device information). Cannot boot into anything else but a reset because it reboots too quickly to enter stuff like safe mode. But, I cannot reset because of very necessary data on the device. The real goal is to get all my stuff like pictures, contacts, etc... out so that I can try to reset.
Also tried a different battery. The issue continued with the new battery however.
This damn thing is a plague my respect to LG is starting to leave.....
Facing same issue

G4 H815 bootloop/freeze - "The Call of the Bin" ?

Hey guys long time lurker here !
I'm experiencing an issue with my G4 h815 currently with AICP (rev from around April) and TWRP (from around January 2017).
Since the last update of AICP I did (so back in April) everything went fine with the phone.
I did nothing weird with the phone (haven't installed an app for months, neither droped the phone or whatsoever)
It suddenly froze while I was browsing Chrome, then bootlooped 2 times, couldn't get past the "swipe to unlock" thingy.
I then decided to get into recovery mode with PWR+Volume down buttons => "do you want to erase blabla ?" => YES => "Are you sure blabla" => YES.
The "TeamWin" logo from TWRP appeared once, phone bootlooped again, and until then it just freezes after the second "YES" when I try to get to recovery mode and then bootloops again.
Obviously this crap happens when I'm far away from home (and for a long time) so I installed drivers / ADB stuff on my laptop but I can't get the phone to be recognized by win 10 in any way. ADB says : error: device '(null)' not found
I'm a bit lost right now, any thoughts / keywords that could help me getting sorted are welcome !
Many thanks in advance,
Fosco
Ok I managed to go a bit further ... discovered about the download mode thingy (Vol UP while plugin it to computer).
I installed LG UP, picked a KDZ file here.
I was then able to "upgrade" the phone with the stock rom : Complete success from the process perspective. It then froze on the basic LG logo. I removed the battery, entered recovery mode, reset worked, phone went back alive => "android is preparing apps, etc" but then it rebooted and froze again on LG logo.
Am I missing something ?
EDIT : Tried LG Bridge method aswell ... can't get it to go further than boot ... still freezing on the boot screen
Went ahead, disassembled the phone and heated the CPU ... looks like it needed it-ish.
I am still stuck on the LG logo, but atleast now I have the green android guy having his belly "moving stuff" and the blue led is glowing :laugh:
Nah seriously this is getting annoying ... IDK what to do next ... Cure it with lawnmower ?

Problem with booting G4

Hello, I would like to first tell you the story my LG G4 has gone through and then I tell you the error.
So, at first my phone was working absolutely properly. I accidentally deleted some pictures and to do a recovery, I had to root it. And rooting would be useful for later so why not do it?
So I first unlocked the bootloader through the code from the LG site. After unlocking, the phone reset (because it would be just too good to make some memory changes and nothing more.) But allright. Then I was ready to root. I just booted the phone, everything was fine. I unlocked the developer mode and opened ADB. I rebooted to recovery through
Code:
adb reboot recovery
I was expecting to see some menu with buttons (but that would be just too good). However, I saw just android with a red triangle in the middle. Nothing more. No response to buttons, nothing.
So I thought. Allright, let's boot into recovery using hardware buttons (vol down + power) at startup. Unfortunatelly, it seemed like there is no such mode System just normally booted (and that was just after bootloader unlocking. Recovery mode goodbye.).
I tried to send commands to the phone using diagnostic port. Unfortunately, it responded by FAIL to every command.
I reboot to bootloader and booted an image: "boot-em.img" (from here: google: how-to-root-lg-g4-on-android-6-0-marshmallow-20a20b-firmware. I'm a newbie here. thx for understanding.)
After that the console uploaded the image and booted successfully. Then, however, system started to boot up and was endlessly booting (LG boot animation) till the battery was critical.
I was able to access the EMI number through volume-down button and volume-up button pressed simultaneously.
I was also able to access some factory-reset dialog by holding volume-down and pressing power-button several times. I choosed to reset everything and then accepted it with one more 'are you sure dialog'. System rebooted and was stucked in the LG boot animation.
Then I got to download mode, since recovery mode was lost in hell. Through LG-UP I flashed the original KDZ firmware and everything got back to normal, but recovery mode was still inaccessible through the hardware buttons. I got through the process of setting everything up, getting developer, rebooting to bootloader and I booted TWRP.
TWRP loaded and it responded to double-tap on screen to wake it up. I just checked the menus and let the phone sleep.
After several hours I went back to the phone and double-tapped on display. Nothing. Phone was not responding. I pressed the power button and the phone restarted (I think. It either restarted into the system or was not responding to power button.)
So I got to the system and again rebooted to the TWRP (through fast-boot). I tried to back-up one partition to the disk. During the process phone had turned the display off. So I double tapped. Nothing. I removed the SD card and the phone woke, saying that back-up process was not able to complete. Suddenly it stopped responding to double-tap. It woke up through an interrupt. I re-inserted the card, successfully backed-up the partition to the SD-card and I left the phone laying on the bed plugged in the charger. It stayed that way for 4 hours or so, doing nothing. All of a sudden, a yellow screen was there, (and that's a screen of absolute death that was never supposed to come. Little I knew.) saying that an unexpected critical error happened and to do a memory dump, insert a cable, set up some communication (I don't remember what it was, didn't take a picture of it.) and it could send the memory dump to PC or somewhere. I thought to myself. So, the application is not so stable after all. It said that to reboot just press the power button or something.
And now the problem comes:
The first start: Bootloader booted, LG animation went on and finished. The starting up apps dialog came rolling. Then, system restarted.
The restart: Bootloader booted, LG animation went on and freezed. Then, the phone restarted.
Second restart: The same thing as the first one.
Fourth restart up till now: Bootloader tries to boot and restarts before the LG animation.
I got to download mode and it restarted even there. After re-inserting the batterry I can sometimes get to the Firmware Update window and communicate. There I flashed the official firmware again.
No success, as if I didn't even do it. It restarts before the animation.
Can I do anything with the phone? Hopefully I can. No hardware problem occured (except for a situation where the error could fry the wires inside the mighty System On Chip.)
For the software state I cannot even tell but I might say it's cooked just wrong. That's why I came here.
I know I did some pretty stupid steps. But the error was not done by me. It worked fine and after the yellow screen which came by itself, it just (some bad words).
Thanks for replies.
Phone: LG-G4 H815, European market
Solution
So, I was looking around and believe it or not, this problem disconnected the pins on the motherboard's snapdragon 808.
I think this happened: The device, although it was heated many times during its life, it withstood that so far.
However, a longer run of the TWRP had finished it off. Memory got disconnected while running and it threw a yellow-screen.
Pins got disconnected and from then on it was just a standard common LG bootloop issue.
The continuous process of dying (First it partially loaded, then only animation, then nothing) is explained by this fact that the pins were so-so there and a couple of reboots just got it totaled.
Temporary fix:
Pre-heated the memory chip to 250°C using Hot-Air gun. After 18 seconds at this temperature I pressed the memory on top of the snapdragon down to the board while cooling.
Then I added a little metal square on the metal part that is covering the system on chip. This part is over the SOC where before there was just some tape.
This can work for several days in sleep mode or a couple of 'heat-demanding' operations on the phone.
Permanent solution should be to reball the memory chip on the snapdragon. That's my next step.

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