G3 Power Issue/Cannot access fastboot or install TWRP - G3 Q&A, Help & Troubleshooting

Hello All,
Sprint LG G3 LS990 Here.
I am currently trying to flash TWRP onto my phone, and booting into the Operating system is not possible at this point. I have restored the phone back to factory using the ZV4 .tot file, but i cannot get it to stay powered on. The phone will stay powered on in download mode and recovery mode, but when i start to flash something via download mode, sometimes it will stay powered through the process, and sometimes it will just shut off. Also, when i power it on, sometimes it will boot to the yellow Sprint Spark screen, freeze, and then shut off. Other times, it will boot into the OS, then freeze and shut off before I can do anything. One time, it booted all the way to the OS, went through the activation, and then powered off. Once the power cuts off, i have to remove the battery and then it will power on again, but still never make it to the OS without shutting off. I can get the phone into download mode and stock recovery (The phone has never been rooted or flashed, it is bone stock). I cannot figure out for the life of me how to get TWRP flashed onto the phone with either download mode OR ADB commands via the stock recovery. I cannot figure out how to successfully format the LAF partition to access fastboot. Can anyone provide some assistance? Please help!

Related

[Q] [HELP] stuck in bootloop/soft brick.

I was using PA rom for a few months and everything was fine until my gnex suddenly bootloop for no reason. Wasn't flashing a new rom, or tweaking anything. Phone just crash and when i try to reboot it, it just stuck in a bootloop. Showing google, then animation screen and afterwards reboot again back to google and animation and keeps repeating.
Phone info:
-rooted
-bootloader unlocked
-on custom rom (PA ROM)
Attempt to fix problem:
-flash a diff rom ( still boot loop )
-factory reset,wipe system cache etc. ( still boot loop )
-flash factory image 4.3 ( still boot loop ) [All is done through adb, manually flash each radio,bootloader, system etc one by one ]
-flash factory image 4.0 ( still boot loop )
So currently i'm on stock android, stock recovery, stock bootloader, stock baseband etc. But it is still bootlooping, anyone know what can i do?
ps, i did search through the forum, most people got pass this problem through flashing stock image, but mine doesn't
did you erase and then flash userdata?
Similar to my problem, hope it someone knows an answer.
Same problem!
Not to hijack your thread, but I'm having the same problem -
My phone was charging and working fine. I left the room and came back and the phone was stuck at the "Google" bootloader screen. I pulled the battery and reinserted. It went to the Cyanagen boot animation, then froze. Subsequent battery pulls resulted in it freezing at the Google screen.
I can not access recovery (power + vol up + vol down), but I can access the Odin download screen (power + vol down). Odin will connect to my phone, but I can't reflash the stock firmware. After attempting to flash the firmware my phone shows the phone-triangle-computer screen regardless of what buttons I push during start up. I can still connect to Odin, but can't reflash stock. I receive the "complete write failure" message each time. I've tried switching USB ports and USB cords without success.
Sprint SPH 700
Rooted with bootloader unlocked
Running Cyanagen ROM
Any tips? Do I need to reload the PIT file? Thank you!
TSRibeye said:
Not to hijack your thread, but I'm having the same problem -
My phone was charging and working fine. I left the room and came back and the phone was stuck at the "Google" bootloader screen. I pulled the battery and reinserted. It went to the Cyanagen boot animation, then froze. Subsequent battery pulls resulted in it freezing at the Google screen.
I can not access recovery (power + vol up + vol down), but I can access the Odin download screen (power + vol down). Odin will connect to my phone, but I can't reflash the stock firmware. After attempting to flash the firmware my phone shows the phone-triangle-computer screen regardless of what buttons I push during start up. I can still connect to Odin, but can't reflash stock. I receive the "complete write failure" message each time. I've tried switching USB ports and USB cords without success.
Sprint SPH 700
Rooted with bootloader unlocked
Running Cyanagen ROM
Any tips? Do I need to reload the PIT file? Thank you!
Click to expand...
Click to collapse
I finally got thru the phone to pc fail screen by using a older version of Odin(3.04).Then the flash went thru w/o a hitch. Is your PC recognizing the Phone? If not the drivers may need to be uninstalled and reinstalled. I had to use the samsung usb cord and no other also.
Zepius said:
did you erase and then flash userdata?
Click to expand...
Click to collapse
yup i did that....fastboot erase userdata and also fastboot erase data. still boot loops
Flash factory image via fastboot,
Sent from my maguro using xda app-developers app
bunodosoma said:
I finally got thru the phone to pc fail screen by using a older version of Odin(3.04).Then the flash went thru w/o a hitch. Is your PC recognizing the Phone? If not the drivers may need to be uninstalled and reinstalled. I had to use the samsung usb cord and no other also.
Click to expand...
Click to collapse
Yup, my PC recognizes the phone. I can push partial tar files (for example, recovery only) to the phone just fine. I'll try a different version of Odin. Thanks!

[Q] AT&T GS3 stuck in boot loop can not boot into recovery.

I was running AOKP and wanted to factory reset my phone so i booted in recovery mode and it tells me i reset my phone when i boot it is just as i left it before. When i try and update the ROM in recovery I can't mount my SD card so i cant update. Finally i download an app called "[root] Mobile ODIN Pro". I downloaded the stock firmware and tried installing it. Now my phone constantly boots goes to the Mobile ODIN recovery the screen flashes with text and it turns off and repeats the process. Now when i take out the battery put it back in and hold the volume down, home, and power button nothing happens i just boot into Mobile ODIN recovery again. Same goes with volume up. If i can't boot into upload mode i don't think i can use ODIN on my PC to restore my phone. Did i **** up my phone is there ANY way to fix this?

Phone Only Boots When Plugged In

I just recently Odin the NJ3 tar over my ND8 stock deodexd debloated ROM a couple of weeks ago. Then I started experiencing that the phone will randomly shuts off automatically and the only way to turn it back on is to plug it into a power source.
So I decided to flash the Stock+NJ2+Deodex.zip using Philz after doing a wipe to install a new ROM. This caused the phone to only boot to the Sprint Logo and then it shuts down. So I decided to wipe and install Wicked S5 Xperience V2.2. Now I am at where the phone will only boot and runs if it is plugged into a power source.
Can someone suggest a solution or steps to get my phone back to stock (including all the needed downloads)?
Can I restore a backup I made prior to updating to NJ2 (while still on ND8)?
Can I install the ND8_STOCK_DEODEXED_ROOTED.zip after upgrading to NJ3?
Note: The phone runs fine when I boot into Philz and so it cannot be a bad battery?
Installing an ND8 Stock ROM on NJ2 disables Wifi. So I managed to install the Stock+NJ2+Deodex.zip and get the phone running just as long as it is plugged in.
When I unplug to run on battery, the phone turns off. When I try to turn it on, it gets to the Sprint Logo and then turns off.
I can boot into Philz recovery mode on battery and it works fine in recovery mode without turning off.
Does anyone have any suggestions as to what could be wrong?
[Solved] New Battery
Thanks for all the help.
The Sprint store tested the battery and it failed. Installed new battery and phone is now working again. What's the chance the battery gave out at the same time I flashed a ROM?

Fire phone with FOS 4.6.6.1 alive again!

Hello everyone so this week I decided to root, flash custom recovery and of course flash a custom ROM in this case KK-FIRE-NEXUS-ROM. Anyway the phone booted it self into recovery and after I rebooted back to the OS and seeing the amazon boot animation it went black; it did not let me turn it on, not sign of power, I plugged the power cord with no signs of it charging then I constantly pressed key combination to boot into fastboot or recovery and it happened! It booted into fastboot and let my go into custom recovery. To make this story short and hopefully this helps others to not make mistakes; I tried to restore a back up of the stock ROM but it did not work. I tried to flash the stock ROM .bin format but it also did not work. I did all of this using my linux machine then I found this options in the recovery to select different ROMS within the recovery so you can boot into them well somehow it was changed to ROM(1) so I selected STOCK, rebooted and that was it. I got my phone working without having to flash anything! or messing up anything! ​
I hope this helps somebody or stops them from flashing something that will kill their phones!​

GT-N5100 soft bricked by itself

Hello everyone,
Yesterday when I was going to use my tablet I noticed it was off, but minutes before it was on, so I tried pressing the power button and nothing happened, plugged the charger in, nothing, no signs, it seemed bricked, so I tried to power through download mode and it worked, after that I pressed volume down to cancel it to start normally, the first samsung logo showed up (that one that says the model and stuff), but it was there for really long, i left it running and after 5 mins or so it changed to the pulsing blue samsung logo, left it there and about 30 mins later it was back to the 1st samsung logo again. I also tried a soft reset and booting to safe mode, didn't work either.
This tablet has no custom rom installed (I think it is on stock 4.4.2), the only thing different I installed is TWRP and root, years ago, but I cant boot to TWRP through the vol up+home+power, it doesnt work, tbh it never worked since back then, the only way I found to boot to twrp was thru "adb reboot recovery" using adb, which didnt work in download mode, I want to be able to backup some data before flashing it with Odin, so here are my questions:
1- Is there any other command I could try to force it to boot to recovery?
2- Is there any way to backup data via download mode on this device?
Thank you for your attention

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