Develop Bugs

Cant boot into recovery

Hey guys, new to the forum and am looking for some guidance here. I've had my LGOG going great with CM11 and one day I put it on the charger when the battery got down to 1%. The next morning I grabbed my phone and it was off and refused to turn on. I was able to get it on by holding volume up + power and plugging it into a charger or PC but only when it was plugged in. I replaced the battery already to rule that part out. So now i've followed this guide and everything went fine,I flashed Teenybin SBLunlockhttp://forum.xda-developers.com/showthread.php?t=2230106. Only thing is for some reason i cannot boot into recovery mode, fastboot and download mode work fine but when i choose recovery from fastboot the phone shows a google logo and a small lock on the bottom of the screen and then turns off and show's the charging icon. I've been at it for hours and cannot get into recovery to flash a new rom.
My question for yall is am I wasting my time with this? I'm still not convinced that this is not a hardware failure since nothing on the phone works unless plugged into power. Any thoughts would help a ton otherwise i'll have to just cough up the cash for a new one. Thanks in advance guys.
Nex

nextelhalo said:
Hey guys, new to the forum and am looking for some guidance here. I've had my LGOG going great with CM11 and one day I put it on the charger when the battery got down to 1%. The next morning I grabbed my phone and it was off and refused to turn on. I was able to get it on by holding volume up + power and plugging it into a charger or PC but only when it was plugged in. I replaced the battery already to rule that part out. So now i've followed this guide and everything went fine,I flashed Teenybin SBLunlockhttp://forum.xda-developers.com/showthread.php?t=2230106. Only thing is for some reason i cannot boot into recovery mode, fastboot and download mode work fine but when i choose recovery from fastboot the phone shows a google logo and a small lock on the bottom of the screen and then turns off and show's the charging icon. I've been at it for hours and cannot get into recovery to flash a new rom.
My question for yall is am I wasting my time with this? I'm still not convinced that this is not a hardware failure since nothing on the phone works unless plugged into power. Any thoughts would help a ton otherwise i'll have to just cough up the cash for a new one. Thanks in advance guys.
Nex
Click to expand...
Click to collapse
Your battery was probably fine so I would keep it around. That just seems to happen sometimes.
The recovery that teenybins installs is not CM11 compatable. So you need to install a KK recovery, or ADB sideload a Stockish ROM.
For ADB sideload to install a Stockish Rom go here. http://forum.xda-developers.com/showthread.php?p=36270473
To install a recovery through fastboot, DL it from here. http://downloads.codefi.re/shelnutt2/freegee/LG-LS970/ These are for KK
And to install it using fastboot.
fastboot erase recovery
fastboot flash recovery recovery.img
You may need to do a factory reset to get it to boot.
---------- Post added at 06:06 AM ---------- Previous post was at 05:56 AM ----------
Forgot to tell ya, just pull the recovery image from the zip and use it with fastboot.

engine95 said:
Your battery was probably fine so I would keep it around. That just seems to happen sometimes.
The recovery that teenybins installs is not CM11 compatable. So you need to install a KK recovery, or ADB sideload a Stockish ROM.
For ADB sideload to install a Stockish Rom go here. http://forum.xda-developers.com/showthread.php?p=36270473
To install a recovery through fastboot, DL it from here. http://downloads.codefi.re/shelnutt2/freegee/LG-LS970/ These are for KK
And to install it using fastboot.
fastboot erase recovery
fastboot flash recovery recovery.img
You may need to do a factory reset to get it to boot.
---------- Post added at 06:06 AM ---------- Previous post was at 05:56 AM ----------
Forgot to tell ya, just pull the recovery image from the zip and use it with fastboot.
Click to expand...
Click to collapse
Thanks for the reply, this helped me get along with ADB and SDK but i'm still not clear on it. I've got the recovery image needed and ADB running but not sure how to flash the recovery image to the phone. I tried following the guide in the link you provided but it wants you to get into recovery mode on the phone and enable ADB mode but I cant get into my recovery on the phone. Problem. Again though thanks for you help, much appreciated. This learning process brings me back to my days of modding the old Xbox.
So just thinking about your last post, did you recommend installing a stock rom first and then try to install the new recovery image? I am able to put the phone into download mode and i've used LGNPST to push a full stock ZVB rom to it, seemed to work but I didnt know if that was the right way to go and flashed the Teenybin SBL unlock again.

nextelhalo said:
Thanks for the reply, this helped me get along with ADB and SDK but i'm still not clear on it. I've got the recovery image needed and ADB running but not sure how to flash the recovery image to the phone. I tried following the guide in the link you provided but it wants you to get into recovery mode on the phone and enable ADB mode but I cant get into my recovery on the phone. Problem. Again though thanks for you help, much appreciated. This learning process brings me back to my days of modding the old Xbox.
So just thinking about your last post, did you recommend installing a stock rom first and then try to install the new recovery image? I am able to put the phone into download mode and i've used LGNPST to push a full stock ZVB rom to it, seemed to work but I didnt know if that was the right way to go and flashed the Teenybin SBL unlock again.
Click to expand...
Click to collapse
You said you had fastboot. So you can use fastboot to load the kk recovery using those commands. If unsure just google it. Lots of info on fastboot.
As for sideload that was just to get a stock ROM on your SD.
If you lgnpst zvb then your phone should boot up and needs to update to zvc before you do anything else.
But if you flashed teenybins then you should have recovery and be able to flash the kk recovery. Power+ vol up gets recovery. Dn twice on vol button, then power gets you to recovery.
Check the FAQ and root guide. All this info is in there if it's confusing.
Sent from my LG-LS970 using XDA Premium 4 mobile app

engine95 said:
You said you had fastboot. So you can use fastboot to load the kk recovery using those commands. If unsure just google it. Lots of info on fastboot.
As for sideload that was just to get a stock ROM on your SD.
If you lgnpst zvb then your phone should boot up and needs to update to zvc before you do anything else.
But if you flashed teenybins then you should have recovery and be able to flash the kk recovery. Power+ vol up gets recovery. Dn twice on vol button, then power gets you to recovery.
Check the FAQ and root guide. All this info is in there if it's confusing.
Sent from my LG-LS970 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I got ya, so I'm making sense of it all after a bit and I have more info if it helps. I've been able to get ZVB on there (via LGNPST) and i'll update to ZV9 just in case yet no matter what i do i cannot get recovery to boot. I get into fastboot and choose Recovery ( locked and unlocked) but when i hit the power button to choose recovery I get nothing, it shuts down. I'll keep at it and give a progress report if I make any.
UPDATE: Ok so I can only access (on phone) Fastboot when i flash one of the Teenybin files. The stock ZV9 and ZVB just show me the LG logo and go back to the battery icon. So, I flashed teenybin SBL unlock again got the phone into fastboot. I opened a terminal on my PC with ADB running and my phone in Fastboot connected to my PC (LG Drivers installed). When i choose adb sideload recovery.img and it says "device not found". Still working on it but havent gotten past this yet.
Im still wondering if there is hardware failure since I flashed ZVB and the phone still will not boot up period unless it's connected to PC/charger.

Do this then. Grab the zvc bin from the root guide. That is the most current and it has the right modem. Zvb and zv9 have the wrong modem.
Also it sounds like you have stock recovery. Which you will if your using zv? bins.
Then after using zvc bin, use teeny bin. That'll get you to twrp recovery. In twrp flash the kk recovery and you should be good to go.
Sent from my LG-LS970 using XDA Premium 4 mobile app

engine95 said:
Do this then. Grab the zvc bin from the root guide. That is the most current and it has the right modem. Zvb and zv9 have the wrong modem.
Also it sounds like you have stock recovery. Which you will if your using zv? bins.
Then after using zvc bin, use teeny bin. That'll get you to twrp recovery. In twrp flash the kk recovery and you should be good to go.
Sent from my LG-LS970 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Gave it a shot, flashed ZVC and then after that did Teenybin SBL unlock and same thing. I get it into fastboot, choose recovery and then the phone show's a google logo with alittle lock on the bottom and then goes to black screen then to charging icon. :silly: I'll keep at it.
Update, a friend gave me some help and I was able to flash the recovery image you linked to me via ADB but still no change in the phone. On teenybin in fastboot, select recovery and still get the same google logo and small lock, then goes to power screen.
Haha, seems you've been down this road before. Found this while searching around, I'm giong to try the steps in the last two post's of the thread. Thanks for the help Engine.
http://forum.xda-developers.com/showthread.php?t=2535874&page=3
UPDATE: unfortunately no change, left the phone on the charger for a few hours but still stuck with no usable recovery mode and phone only responds while plugged in. Think i'll chalk this up to some type of hardware failure.

Will your phone even boot to the stock ROM? If it does, try installing Quickboot from the PlayStore. See if that'll get you into recovery.
I can't remember if it's in the root guide or the FAQ, but I posted another option for a battery issue like yours. Try it and see if it'll do more.
There's some commands that'll wipe through adb. I'll see if I can find them.
Sent from my LG-LS970 using XDA Premium 4 mobile app

Wont boot into stock Rom yet, man i wish i was that far along and i'd be done probably. Thanks for looking at it for me.

nextelhalo said:
Wont boot into stock Rom yet, man i wish i was that far along and i'd be done probably. Thanks for looking at it for me.
Click to expand...
Click to collapse
There's something we're missing here, so lets start at the beginning
LGNPST ZVC again. This SHOULD get you going.
Now you will have stock recovery. To enter stock recovery, press vol down+power The LG logo will come on, then the capacitive lights. Immediately let go when the capacitive lights turn on. It takes a few seconds to work. And maybe a few tries to get it.
IF that all happens, then in stock recovery, do a Factory reset. IT WILL WIPE YOUR SD/INTERNAL STORAGE!!
Now your phone should boot up to stock ROM.
If that doesn't work, go to ADB and issue these:
adb shell
"dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/cache"
adb shell
"dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/userdata"
These will zero out /cache and /data
Reboot your phone and it should boot up
If not, you may need to LGNPST ZVC one more time and you should be good to go
If no dice again, you might need to try a battery pull, which you should know seeing as how you replaced the battery.
That's about all I got....you could also try getting on the irc and see if someone there has more idea's
Good luck! :fingers-crossed:
Edit: I forgot to tell you that in Stock recovery, use the capacitive menu key to select. The Power button doesn't do it in Stock recovery. Menu is the bottom right of the display and I don't think it's lit, but I'm not sure.

Thank you sir, i'll give this a shot tonight when i get back home. I'll keep my fingers crossed but i've located another LGOG on Craigslist for 80$, might not be able to pass up that deal.
Update: still no go, I agree there is something missing here. When i flash ZVC all goes like it should but the phone still just flatout wont do anything unless on external power. I went ahead and did a battery pull but no change. It's like we're doing everything correctly here but it wont let us past fastboot or download mode. Either it's software or this thing may have fried. I'm going to bring it to a friend here in town and see what he can do, he's a guru in this department but I wanted to figure this out on my own. If we get this back up and running I will for sure update this thread, hopefully it can help some folks out there. Thanks again for the help Engine, I wont give up until i know exactly what happened and i'll pass it along.

Cant enter recovery mode

I cant format,update,or enter revovery mode.Ive tried to turn off the phone and do that power button and volume up.Then i go press recovery,then the phone restarts and go to the same screen.Theres no error thingy showing.

Hi,
Reflash your recovery via fastboot command:
Code:
fastboot flash recovery [color="red"]recovery.img[/color]
Replace recovery.img with your prefered recovery's filename.
Sent from my GT-I9500

krasCGQ said:
Hi,
Reflash your recovery via fastboot command:
Code:
fastboot flash recovery [color="red"]recovery.img[/color]
Replace recovery.img with your prefered recovery's filename.
Sent from my GT-I9500
Click to expand...
Click to collapse
Fastboot undetected

haridzk said:
Fastboot undetected
Click to expand...
Click to collapse
Have you installed the USB driver?
Sent from my GT-I9500

krasCGQ said:
Have you installed the USB driver?
Sent from my GT-I9500
Click to expand...
Click to collapse
You mean using conputer?

New Z00A ZE551ML 3.15 firmware can't upgrade OTA manually
I have the same problem, although it is not likely the drivers.
When attempting to sideload the full firmware image, it errors out after a few seconds, stating that it cannot detect the device. I reboot the phone manually, then reboot bootloader from command prompt. try again and the same thing happens. First, I tried placing the file on an sd card, renaming it to MOFD_SDUPDATE but it failed after 25% and left me with the screen showing the "unplugged" icon. Now I cannot enter recovery at all. Attempted root, tethered, untethered, and no luck with any. I used an app before trying any of this to make sure it was not rooted or unlocked already. I'm running out of ideas. When I get home, I will try flashing just the droidboot.img as suggested in this thread: http://forum.xda-developers.com/zenfone2/help/unlock-bootloader-read-fix-t3138837.
Any other advice would be greatly appreciated. As I said my phone has
VERSION: WW-ASUS_Z00A-2.15.40.13 and failed to manually upgrade to 2.19.40

haridzk said:
You mean using conputer?
Click to expand...
Click to collapse
No, I mean USB Driver, for real. You can't do anything related to debugging without having the related drivers installed.
Sent from my GT-I9500

Quadro1972 said:
I have the same problem, although it is not likely the drivers.
When attempting to sideload the full firmware image, it errors out after a few seconds, stating that it cannot detect the device. I reboot the phone manually, then reboot bootloader from command prompt. try again and the same thing happens. First, I tried placing the file on an sd card, renaming it to MOFD_SDUPDATE but it failed after 25% and left me with the screen showing the "unplugged" icon. Now I cannot enter recovery at all. Attempted root, tethered, untethered, and no luck with any. I used an app before trying any of this to make sure it was not rooted or unlocked already. I'm running out of ideas. When I get home, I will try flashing just the droidboot.img as suggested in this thread: http://forum.xda-developers.com/zenfone2/help/unlock-bootloader-read-fix-t3138837.
Any other advice would be greatly appreciated. As I said my phone has
VERSION: WW-ASUS_Z00A-2.15.40.13 and failed to manually upgrade to 2.19.40
Click to expand...
Click to collapse
If you are getting the USB logo on your screen you're sh!t out of luck as it is a hard brick... You'll need to send back to ASUS to get rom put back on phone...

ultramag69 said:
If you are getting the USB logo on your screen you're sh!t out of luck as it is a hard brick... You'll need to send back to ASUS to get rom put back on phone...
Click to expand...
Click to collapse
I was very fortunate that it would still boot into the bootloader. As a result I was able to fix using these instructions and pre-rooted images, including an Asus recovery image:
http://forum.xda-developers.com/zenfone2/general/guide-to-apply-ota-bootloop-rooted-zf2-t3127835
---------- Post added at 04:37 AM ---------- Previous post was at 04:33 AM ----------
Quadro1972 said:
I was very fortunate that it would still boot into the bootloader. As a result I was able to fix using these instructions and pre-rooted images, including an Asus recovery image:
http://forum.xda-developers.com/zenfone2/general/guide-to-apply-ota-bootloop-rooted-zf2-t3127835
Click to expand...
Click to collapse
Also, if anyone else attempts this fix, download the images using Google Chrome or it will error out, fail checksum

Help getting TWRP onto my g4

Ok so I've had the fone a while now and finally unlocked the bootloader but as I'm knew to all this on lg can someone point me to a simple root method for marshmallow 20a I think if one exists or some other method of flashing TWRP onto my phone.
Thanks in advance
Sent from my GT-N8013 using Tapatalk

Found this is there any reason I can't use this method to install TWRP so I can then flash a cm13 based rom
http://www.droidviews.com/root-lg-g4-and-install-twrp-recovery/
Sent from my GT-N8013 using Tapatalk

I've unlock my bootloader, and successfully flashed TWRP like this video https://www.youtube.com/watch?v=O64GfQORCaE
But I can't get in recovery mode.
I'm trying to root like so http://forum.xda-developers.com/g4/development/kernel-t3232651 because I've already have 6.0 and I'm stuck....
Anyone can help please??

Edit: You don't actually need to use fastboot commands... it's just annoyingly counter intuitive.
Here's what works to boot into recovery after it's been flashed:
Turn phone off
Hold power and volume down
Release power for a half second when the LG logo appears then press and hold again
Unit will boot to white LG recovery asking if you want to wipe all data
Confirm yes twice
Unit will boot to TWRP recovery
-----------------
I had this problem earlier. You have to use fastboot commands to boot into it.
Change twrp-2.8.7.0-h815 to match your twrp file name
Code:
adb reboot bootloader
fastboot flash recovery twrp-2.8.7.0-h815.img
Fastboot boot twrp-2.8.7.0-h815.img

ajscott said:
I had this problem earlier. You have to use fastboot commands to boot into it.
Change twrp-2.8.7.0-h815 to match your twrp file name
Code:
adb reboot bootloader
fastboot flash recovery twrp-2.8.7.0-h815.img
Fastboot boot twrp-2.8.7.0-h815.img
Click to expand...
Click to collapse
Excellent!!!
So after that I flash the .zip or .img that's in the folder? (total new with rooting)
---------- Post added 25th January 2016 at 12:27 AM ---------- Previous post was 24th January 2016 at 11:56 PM ----------
rooted!
but it doesn't read my sdcard and bluetooth...

When I was installing twrp and CM13 on my G4, I tought that I can't access twrp either. When pressing vol down+power I got to the default screen with only option to factory reset. So I used the above command to access it. But I noticed, that if I go through that factory reset thingy, it will go to twrp without factory reset. So after you get to factory reset recovery, answer yes to the first question and then yes to the second one and you'll get to twrp.

So to get this straight
1 adb reboot bootloader
2 fastboot flash recovery.....
3 fastboot boot TWRP......
Then I can backup my current setup and then flash any Rom from there just like with my Samsung using TWRP after that then I can enter recovery via the power and volume down buttons?
Sent from my GT-N8013 using Tapatalk

Would I be better to flash a stock based rom with modem and bootloader first
Sent from my GT-N8013 using Tapatalk

eddyctweets said:
So to get this straight
1 adb reboot bootloader
2 fastboot flash recovery.....
3 fastboot boot TWRP......
Then I can backup my current setup and then flash any Rom from there just like with my Samsung using TWRP after that then I can enter recovery via the power and volume down buttons?
Sent from my GT-N8013 using Tapatalk
Click to expand...
Click to collapse
Even after installing CM13 I still got default recovery with vol down+power, but was able to enter twrp when rebooting from CM13 using something like twrp manager.
But as I said above, you get to twrp by going through "factory reset" from default recovery. It will not do factory reset.
I personally went with Genisys 3.6 ROM after trying CM13 for a few days. Picture quality suffered too much for my liking, and miracast support was also lost with CM13. With Genisys ROM everything works well.

Soft brick. Bootloop. Fastboot works. Recovery adb works. TWRP GUI broken.

Secure boot enabled.
Device state - unlocked.
I tried to follow the Heisenberg tutorial to flash a custom Rom.
Finished the root. Decided I installed the wrong version of GApps. Went back to stock to redo the process.
Accidentally installed a 6p stock image instead of 5x. Then my troubles began.
I've tried a lot of different things. I don't have a full log of steps taken.
Have tried reflashing different 5x stock images. They flash fine but problem persists.
Problems:
1. Booting to Android bootloops
2. TWRP recovery GUI is non-responsive.
Fastboot works great.
Reflashing TWRP from fastboot doesn't help.
ADB access to recovery seems responsive, but I'm not sure whether commands are actually executing. For example running twrp factoryreset just hangs. All twrp commands do that.
I would like to perform a factory reset. I have TWRP backups that I could restore. I don't know how to do that from fastboot.

First download the full Nexus 5x stock rom from here: https://developers.google.com/android/nexus/images then boot your Nexus 5x into its bootloader then on your computer (I am assuming it's Windows) download 7zip from here: http://www.7-zip.org then right click the .tgz stock rom file you just downloaded on your computer then extract it with 7zip. Inside that you will find a .tar file. Extract that then you will find a zip file before extracting the zip file run the .bat file while your Nexus 5x is connected to your computer then hold down your shift key, right click and click open command window here (while you are in the folder where you extracted the zip) in the command window, terminal, CMD, whatever you like to call it then type fastboot -w (that does a factory reset) then type fastboot flash system system.img then fastboot flash recovery recovery.img than fastboot flash boot boot.img than fastboot flash cache cache.img then fastboot flash userdata userdata.img then fastboot flash vendor vendor.img then fastboot flash recovery recovery.img. You should be able to boot back into Android now but you will need to reflash twrp. Also download the any file for 6.0.1 not 7.0 because you will have to do some extra steps for that.
P.S. this MIGHT erase your twrp backups.
Thank You,
Sincerely VibraniumDroid
---------- Post added at 08:06 AM ---------- Previous post was at 08:05 AM ----------
leolittlebook said:
Secure boot enabled.
Device state - unlocked.
I tried to follow the Heisenberg tutorial to flash a custom Rom.
Finished the root. Decided I installed the wrong version of GApps. Went back to stock to redo the process.
Accidentally installed a 6p stock image instead of 5x. Then my troubles began.
I've tried a lot of different things. I don't have a full log of steps taken.
Have tried reflashing different 5x stock images. They flash fine but problem persists.
Problems:
1. Booting to Android bootloops
2. TWRP recovery GUI is non-responsive.
Fastboot works great.
Reflashing TWRP from fastboot doesn't help.
ADB access to recovery seems responsive, but I'm not sure whether commands are actually executing. For example running twrp factoryreset just hangs. All twrp commands do that.
I would like to perform a factory reset. I have TWRP backups that I could restore. I don't know how to do that from fastboot.
Click to expand...
Click to collapse
Tell me if this works
---------- Post added at 08:08 AM ---------- Previous post was at 08:06 AM ----------
Also after your done type fastboot -w again

vibraniumdroid said:
Tell me if this works
Click to expand...
Click to collapse
android stock version: MTC20F
flash-all.bat OKAY
fastboot -w OKAY
fastboot flash system system.img OKAY
fastboot flash recovery recovery.img OKAY
fastboot flash boot boot.img OKAY
fastboot flash cache cache.img OKAY
fastboot flash userdata userdata.img OKAY
fastboot flash vendor vendor.img OKAY
fastboot flash recovery recovery.img OKAY
fastboot reboot
RESULT: bootloop continues. fails to boot to android.
fastboot flash recovery twrp-3.0.2-1-bullhead.img OKAY
reboot to recovery mode
RESULT: GUI still unresponsive. No change.
Can only lock screen with power button.
vibraniumdroid said:
download the any file for 6.0.1 not 7.0 because you will have to do some extra steps for that.
Click to expand...
Click to collapse
I don't understand this line.
EDIT:
fastboot -w again
OKAY
No improvement.

Sorry typo
---------- Post added at 09:57 AM ---------- Previous post was at 09:57 AM ----------
Try reflashing the radio
---------- Post added at 09:58 AM ---------- Previous post was at 09:57 AM ----------
vibraniumdroid said:
Sorry typo
---------- Post added at 09:57 AM ---------- Previous post was at 09:57 AM ----------
Try reflashing the radio
Click to expand...
Click to collapse
Try cyanogen recovery

vibraniumdroid said:
try...
Click to expand...
Click to collapse
Flashed radio, no change.
Cyanogen recovery interface functional.
Ran full factory reset. Wiped cache.
Able to navigate with physical buttons. Screen buttons still not working. Cannot use back button. Cannot exit menu.
Cannot reboot from adb due to loss of authorization when switching recoveries.
Rebooted with long power button press.
Wiped system.
Rebooted normally. Stuck on Google screen. I assume because I deleted the /system OS.
Reflashed stock using flash-all.bat. Still bootloops.
Reflashed CM recovery.
A CHANGE! Screen buttons now work.
Flashed TWRP recovery. Buttons work.
Copied TWRP backups to phone. They are for prior Android version, however.
Testing whether current version will boot. Nope; bootloops.
Restored backup. Attempted boot. Stuck on Google screen.

leolittlebook said:
Flashed radio, no change.
Cyanogen recovery interface functional.
Ran full factory reset. Wiped cache.
Able to navigate with physical buttons. Screen buttons still not working. Cannot use back button. Cannot exit menu.
Cannot reboot from adb due to loss of authorization when switching recoveries.
Rebooted with long power button press.
Wiped system.
Rebooted normally. Stuck on Google screen. I assume because I deleted the /system OS.
Reflashed stock using flash-all.bat. Still bootloops.
Click to expand...
Click to collapse
try to reflash really all manually (bootloader and so on) also try to format your userdata and then reflash it (will wipe internal storage)

Thargorsson said:
try to reflash really all manually (bootloader and so on) also try to format your userdata and then reflash it (will wipe internal storage)
Click to expand...
Click to collapse
New after you posted:
Reflashed CM recovery.
A CHANGE! Screen buttons now work.
Flashed TWRP recovery. Buttons work.
Copied TWRP backups to phone. They are for prior Android version, however.
Testing whether current version will boot. Nope; bootloops.
Restored backup. Attempted boot. Stuck on Google screen.
I will try what you suggest.

how do I make these lines:
---------- Post added at 09:58 AM ---------- Previous post was at 09:57 AM ----------
instead of adding a second post?
Thargorsson said:
try to reflash really all manually (bootloader and so on) also try to format your userdata and then reflash it (will wipe internal storage)
Click to expand...
Click to collapse
wiped all from twrp. said no OS.
rebooted to fastboot. ran flash-all.bat for bullhead-mtc20f
Rebooted into android bootloop.
flashed all manually.
failed midway through on system transfer. switched to different usb cable. worked.
result: bootloop.
redoing with new wire.
flash-all.bat result - bootloop.
manually flashed all. result: bootloop.

leolittlebook said:
how do I make these lines:
---------- Post added at 09:58 AM ---------- Previous post was at 09:57 AM ----------
instead of adding a second post?
wiped all from twrp. said no OS.
rebooted to fastboot. ran flash-all.bat for bullhead-mtc20f
Rebooted into android bootloop.
flashed all manually.
failed midway through on system transfer. switched to different usb cable. worked.
result: bootloop.
redoing with new wire.
flash-all.bat result - bootloop.
manually flashed all. result: bootloop.
Click to expand...
Click to collapse
did you really ran "fastboot earease userdata"? and then "fastboot flash userdata userdata.img"

Thargorsson said:
did you really ran "fastboot earease userdata"? and then "fastboot flash userdata userdata.img"
Click to expand...
Click to collapse
I'm not sure whether I specifically ran the erase command manually on this iteration. I ran those exact two commands just now. It's bootlooping still.

leolittlebook said:
I'm not sure whether I specifically ran the erase command manually on this iteration. I ran those exact two commands just now. It's bootlooping still.
Click to expand...
Click to collapse
Hanging on what? google logo or bootanimation.
Youve tried LG download mode? (power + volume up, then plug usb into phone).
See https://www.youtube.com/watch?v=_47Y-yOTF8k
By the way try a full restore and after lock the bootloader.

It doesn't hang. It shows the normal sequence of GOogle screen and colored dots, then reboots.
I've accessed LG download mode but don't know what to do with it.
I assume you mean to follow these instructions:
http://forum.xda-developers.com/nexus-5x/help/unbrick-nexus-5x-t3438133

leolittlebook said:
It doesn't hang. It shows the normal sequence of GOogle screen and colored dots, then reboots.
I've accessed LG download mode but don't know what to do with it.
I assume you mean to follow these instructions:
http://forum.xda-developers.com/nexus-5x/help/unbrick-nexus-5x-t3438133
Click to expand...
Click to collapse
I gave those directions a try and I'm back at the bootloop with a locked bootloader. I don't know how I'm supposed to flash anything with a locked bootloader, aside from those TOT files, which haven't worked yet... sigh. I really appreciate how much help the community here has been though, hopefully we can get this sorted out on our devices.

leolittlebook said:
I'm not sure whether I specifically ran the erase command manually on this iteration. I ran those exact two commands just now. It's bootlooping still.
Click to expand...
Click to collapse
Could you try: fastboot flash vendor (name of MTC20F vendor) then try restoring your boot, system, and data for your nandroid?
Sent from my Nexus 5X using Tapatalk

Huskehn said:
I gave those directions a try and I'm back at the bootloop with a locked bootloader. I don't know how I'm supposed to flash anything with a locked bootloader, aside from those TOT files, which haven't worked yet... sigh. I really appreciate how much help the community here has been though, hopefully we can get this sorted out on our devices.
Click to expand...
Click to collapse
OTAs can be sideloaded with a locked bootloader.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
Could you try: fastboot flash vendor (name of MTC20F vendor) then try restoring your boot, system, and data for your nandroid?
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
Phone shows up on LGUP. Loathe to try the other thread's directions if it might lock my bootloader.
Tried your suggestion. Didn't work.
flashed vendor stock, then restored nandroid backup all.
android boot sticks on google screen.

Followed these instructions through step 15
http://forum.xda-developers.com/nexus-5x/help/unbrick-nexus-5x-t3438133
Still had bootloop. Cycling through colored dots. Couldn't continue, because couldn't unlock phone's bootloader.
Also can't flash images, because no TWRP recovery anymore.
Seems I'm dead in the water, yes?
Not a big change.

ma
leolittlebook said:
Followed these instructions through step 15
http://forum.xda-developers.com/nexus-5x/help/unbrick-nexus-5x-t3438133
Still had bootloop. Cycling through colored dots. Couldn't continue, because couldn't unlock phone's bootloader.
Also can't flash images, because no TWRP recovery anymore.
Seems I'm dead in the water, yes?
Not a big change.
Click to expand...
Click to collapse
why you cant access the bootloader?
may not. you now have a full stock phone with locked botloader. maybe you contact google at this point.

Thargorsson said:
why you cant access the bootloader?
Click to expand...
Click to collapse
because my DEVICE STATE - is now locked
I think I flashed the international tot file, whereas this phone is a different Hong Kong version.
see here:
http://forum.xda-developers.com/nexus-5x/help/req-help-to-unbrick-t3251740/page13#post68381176

Thargorsson said:
why you cant access the bootloader?
Click to expand...
Click to collapse
I think he means he has bootloader access, but it's locked (that is how my phone currently is as well). You can only flash valid/signed zips from there, not custom ROMs or recoveries.
My goal now at the very least is to get the bootloader unlocked again.

Messed up? Can't access fastboot at all

SOLVED! See my last post on How-To
So, I can't access fastboot. At all. I've tried the following:
Power+Up - Nothing
Boot to fastboot from stock Recovery - Nothing
Boot to fastboot from OS (Advanced power menu) - Nothing
Boot to fastboot from All in One Tool - Nothing
Tried from 3.2.8, and 3.2.7, same result. I have an unlocked bootloader, but that shouldn't matter. And I can't lock it either, since I have no fastboot access.
I can access stock recovery, but have no way to install TWRP.
Please help!

Are u rooted?

Dupleshwar said:
Are u rooted?
Click to expand...
Click to collapse
Was, but with a stock restore I'm fairly sure the root is gone.

deecept said:
Was, but with a stock restore I'm fairly sure the root is gone.
Click to expand...
Click to collapse
You can sideload zips with stock recovery
---------- Post added at 12:44 PM ---------- Previous post was at 12:43 PM ----------
U can try flashing stock again after a backup

Dupleshwar said:
You can sideload zips with stock recovery
U can try flashing stock again after a backup
Click to expand...
Click to collapse
I don't care about data here, so I have tried reflashing stock several times. Both 3.2.7 and 3.2.8, but still refuses to boot into bootloader so I can use fastboot.
Sideload is used to flash stock zip. It still refuses to boot into bootloader mode.

Sorry this as far as I know and can help hope u find a solution soon

Sideload oxygen 3.2.4. The newer ones have updated firmware. once ur in 3.2.4 then try to boot into fastboot.. you should be able to

ihuman007 said:
Sideload oxygen 3.2.4. The newer ones have updated firmware. once ur in 3.2.4 then try to boot into fastboot.. you should be able to
Click to expand...
Click to collapse
Thanks man .. but no go. Still won't boot into fastboot from any of the ways possible.
I'm running out of things to try here! Trying to OTA update from 3.2.4 to 3.2.7 now, see if that helps.

Try adb reboot bootloader?
Sent from my ONEPLUS A3000 using Tapatalk

I did notice something weird. Whenever I'm in stock recovery, and ask to boot to Fastboot, the phone vibrates twice. It seems it's trying to boot into fastboot/bootloader, but fails, and then reboots (second vibration) into the "this phone can't be trusted" image.
Unsure what that means, other than something for sure is corrupt. Any and all help is greatly appreciated!

AFschizoid said:
Try adb reboot bootloader?
Sent from my ONEPLUS A3000 using Tapatalk
Click to expand...
Click to collapse
Tried, does nothing Same as any other option to boot into bootloader. Thanks tho

Ok turn it off, hold volume up, and plug it in to the computer and tell me if it shows anything in device manager
Sent from my ONEPLUS A3000 using Tapatalk

AFschizoid said:
Try adb reboot bootloader?
Click to expand...
Click to collapse
Second this suggestion.
OP, do you have adb set up? - http://forum.xda-developers.com/showthread.php?t=2588979&page=93
Sent from my OnePlus 3 using XDA Labs

Just saw the post about it vibrating twice. Could be a corrupt fastboot. If you don't want to delete data use method one from this thread. If you don't care use method 2 https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
Sent from my ONEPLUS A3000 using Tapatalk

AFschizoid said:
Ok turn it off, hold volume up, and plug it in to the computer and tell me if it shows anything in device manager
On a Mac, but in System Information QUSB_BULK shows up, with some info indication qualcomm. So at least SOMETHINGS happening here.
Click to expand...
Click to collapse

Ok so it shows qusb bulk but didn't boot bootloader? Give me a min, gotta do some hunting. Or if you get an xp virtual machine set up can use that thread
Sent from my ONEPLUS A3000 using Tapatalk

SOLVED:
I used the MSM Download Tool. I can find the device, and it has FINISHED! It now actually works!
Thanks SO much for suggestions!
Prerequsites:
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
Windows OS
How to:
1. Power off device completely
2. Hold volume up while plugging in, keep holding until Windows; Device manager shows device or Mac: System Information -> USB shows device
3. Install drivers (follow guide in above link)
4. Start MSM Download Tool and press start
5. It should download, and let you know when it's complete. Then reboot into bootloader/Fastboot.
FIXED! Thanks so so much

Good luck
Pretty useless with anything apple as I don't use it lol. Most I've ever done was out a new hard drive and ram in and install snow leopard lol
Sent from my ONEPLUS A3000 using Tapatalk

deecept said:
SOLVED:
I used the MSM Download Tool. I can find the device, and it has FINISHED! It now actually works!
Thanks SO much for suggestions!
Prerequsites:
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
Windows OS
How to:
1. Power off device completely
2. Hold volume up while plugging in, keep holding until Windows; Device manager shows device or Mac: System Information -> USB shows device
3. Install drivers (follow guide in above link)
4. Start MSM Download Tool and press start
5. It should download, and let you know when it's complete. Then reboot into bootloader/Fastboot.
FIXED! Thanks so so much
Click to expand...
Click to collapse
Happy it worked for ya! 😄
Sent from my ONEPLUS A3000 using Tapatalk