phone will not boot - boot verification issue? - G3 Q&A, Help & Troubleshooting

Hey guys my phone was fine, then the screen was being weird wasn't working quite right so i pulled the battery, but when i put it back in and tried to boot up again i get the lg black screen and it says "boot certification verify" &&& boot error.
then it goes dark and the LED blinks blue then red for a few seconds and its done...
Needing help I cannot even get it to boot into recovery mode through volume down and power button.

It's cool guys I'll just wait until Monday for my warranty exchange to get here. No worries... lol

I literally couldn't get it to do anything. it wouldnt enter download mode, boot to recovery, nothing. wouldn't talk to my computer, or a laptop, wouldn't do anything. Shake my head I was enjoying CM12 and this is what i get..

Related

Stuck At Boot Screen :(

i flashed the new deepshinning 9x about a week ago, and it was fine for a while, but in the last few days i noticed it began to slow down, and this morning i tried to reset it but it won't turn back on, it hangs at the boot logo can anybody please help, i need it for tonite
You mean you are at the boot logo or stuck at the bootloader?
If you are stuck at the boot logo try a hard reset. If that doesn't work try flashing a new rom.
the boot logo, and i couldn't flash anything else cause the phone wouldn't come on, but i did a restore, now i'm finna get this deep shinning completely off, i'm done with deep shining, any ideas on a better rom? i thought about tryin energy
im stuck at the tp2 logo atm, it makes it to tp2 then restarts. im not turning it on and cant keep it turned off.
i cant get into the boot loader (vol down on start) because it closes after about a minute in the loader
i'd love to task29 the whole damn thing but i cant get access to it via usb >.>
what can i do?

Another Day, Another Problem.. Stuck on Android Robot

So I was stuck in a similar mode (recovery download mode) yesterday, it only show Android robot with spinning gear on his back and a scrolling progress bar. I turn it off (Power + Vol Up) and then no matter what I do, just power or power + vol down all just go back to that damn robot.. Fastboot, adb won't work.. It show up on the computer as HTC Android Phone USB Device in the DVD/CD drives
It refuse to get out of that for hours.. I finally give up and I leave it running and walked away.. somehow when I got back (around 2 hours later) it is booted back to normal and asking for new setup. So I thought is working. So after messing up the initial setup, I when and try to factory reset it this morning.. and again it goes back into a similar mode, but this time it have the word Erasing under it. However this time it won't leave the mode even for 3 hours +. Anyone know how to get it out of that mode and maybe interact with Fastboot or Recovery or bootloader or something
When it is working... I could into booloader and stuff. The phone has been modded to play edition, S-off and bootloader unlocked...
However whenever that happen, if the phone is off but plug into a computer, it show up as QHS_USB_BULK. and then usually turn on and get stuck on that robot again... Also if I just keep pushing up an then power it will say formatting and then backup recovery log and then all the spinning gear and progress bar just stop
I don't get this thing. Please help
So I managed somehow to kick it out again (after waiting for a long time).. but wanted to convert the GPE back to original. Was following this http://forum.xda-developers.com/showthread.php?t=2733523 but before I could go back into TWRP to load the new rom, I accidentally hit factory reset and it got stuck in the HTC version of that same screen. This time it have one extra line Backup CW Package.
Again can't get into the bootloader.. just stuck on this boot loop.. god damn..
Here is how it looks like
View attachment 2903340

[Q] Changed LCD Density and now bricked

Hey everyone, I have a T-Mobile M8, Unlocked, rooted, S-ON and I installed {4.4.4} AxxionKat~1.6.0 {Linaro} 9-13-14. Everything booted as normal, I restored all my apps, etc. I decided to change the DPI settings (which Ive done in numerous other ROMs in the past) to 460 from 480. I made the change, saved the build.prop, and restarted my phone. Instead of booting up and going to the boot animation, its getting hung up at the white HTC screen (where is says "this build is for developmental purposes only" Etc.) then it goes dark. Holding power does nothing. Holding power+vol down does nothing. Holding Power+Vol up will bring it to the white HTC screen again but then it just loops. Any ideas on how to get this thing back in recovery so I can restore a Nandroid? Thanks.
EDIT: Im good now. Back in recovery!
First of all, it's not bricked. If it was, you wouldn't be able to turn it on in the first place. You're thinking of a soft brick.
If you can get into the bootloader, you can just enter recovery (or boot custom) via ADB/fast boot
blazevxi said:
First of all, it's not bricked. If it was, you wouldn't be able to turn it on in the first place. You're thinking of a soft brick.
If you can get into the bootloader, you can just enter recovery (or boot custom) via ADB/fast boot
Click to expand...
Click to collapse
Soft bricked ya. Well I had it up and running and now I find myself in the same situation I was in on Tuesday. I cant get it into the bootloader in order to enter recovery mode. I hit PWR+VOL UP until the white HTC screen comes on, as soon as the screen goes dark I hold PWR+VOL DOWN which should bring me to the bootloader. The first time, this method worked like a charm. This time around it wont do anything. PWR+VOL UP will get me to the HTC screen but then once the screen goes dark PWR+VOL DOWN does nothing....

Black screen after LG boot screen

Hi,
Today while browsing my stock LG g4 (h815) suddenly rebooted. It showed the LG boot screen for a while but then ended up with a black screen. The power button does nothing. If I remove and insert the battery the power button works again, but I get the same result.
I can boot to (stock) recovery OK and if I connect it to a pc it shows 100% charge. I tried using recovery to reset everything but no change.
I am on holiday so can't easily send it in for repairs. Any ideas? I do have a Windows tablet pc with me with ADB on it.
Search "bootloop" in G4 forum.
Warranty is the only solution.
But this is not a boot loop? It seems to boot normally and then goes to a black screen, it doesn't reboot. I direct about the boot loop but from the videos I could find it looked like it kept booting.
I guess I was wrong trying to start it today it boot looped a few times before the black screen. Guess I will try disabling the big cores so that I will at least have a phone until I get home.

OnePlus 3 gets stuck on OnePlus logo screen when trying to boot.

Like the title says, my phones gets stuck at the oneplus logo screen when trying to boot after unlocking the bootloader and
installing a recovery.img file trough the command prompt all after doing a factory reset. After this I tried going into recovery mode
but it just gets stuck at the oneplus logo screen and then the screen just turns black. At this point if i were to try and go straight into fastboot mode it wont let me. Instead i have to long press the power button to get back into the options menu but that's about all i can do. Any help would be greatly appreciated.
This is due to a faulty recovery file may be twrp 3.0.4 so use the recovery I'm attaching to flash and that should fix it... Looks like my net speed is slow so just download twrp 3.0.2 and flash that

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