My unlocked H915 LGV20 wont boot into bootloader/download mode, i can boot into recovery with some trickery but selecting "Boot into bootloader" from recovery also doesnt work, ive tried ADB and the power off and hold volume down button trick too, nothing seems to get it into bootloader/download mode, anyone have any ideas? (FYI im using Arch linux not windows)
If you haven't installed the engineering aboot (part of the root process) then there is no fastboot (bootloader) mode.
Now your post says you can't get into download mode either (with phone off hold vol up + insert USB cable). Was that a typo, or you can't get into firmware update mode either?
-- Brian
Related
Hello,
I tried to install custom recovery with AutoRec
however I didn't use IOroot like they suggested, I had rooted with TowelRoot
After which I was in fastboot mode without download mode.
I followed a guide and rewritten recovery and laf as well as all other img I could find at http://downloads.codefi.re/autoprime/LG/LG_G2/D801BK/Stock_Firmware/10c_partitions
PHP:
fastboot erase recovery [return]
fastboot erase laf [return]
fastboot flash laf laf.img [return]
fastboot reboot [return]
I got to download mode, but my phone is not detecting the download mode (no usb connection, no usb connection sound)
If I plug in the phone regularly and let It boot - it is stuck at LG logo, and if I plug it in - I hear USB connection sound and it detects, however I can't use the flash tool (2015 or 2014) to flash it.
I changed the port to 41 like in the LG tool flash tutorial (http://forum.xda-developers.com/showthread.php?t=2432476)
Today I tried to go Ubuntu Linux path - and plugged it in in both download and regular mode (like in this guide http://forum.xda-developers.com/showthread.php?t=2582142)
and I didn't see it plugged in when I typed
PHP:
ls /dev/sd*
I am under windows 8.1
I also tried windows xp sp3 virtual machine
Anything else that you can suggest?
Thanks
Andrew
Can you open download mode (press vol+ and plug usb cable) or recovery?
Ganjax said:
Can you open download mode (press vol+ and plug usb cable) or recovery?
Click to expand...
Click to collapse
I can go to download mode, but computer doesnt recognize that it's connected (doesnt appear in device manager)
I can only do factory reset. (Vol Down + Power) thats the right way, correct?
Don't see any other options.
When I try to get out of the factory restore screen by pressing any vol up or down - it hangs
.me said:
Hello,
I tried to install custom recovery with AutoRec
however I didn't use IOroot like they suggested, I had rooted with TowelRoot
After which I was in fastboot mode without download mode.
I followed a guide and rewritten recovery and laf as well as all other img I could find at http://downloads.codefi.re/autoprime/LG/LG_G2/D801BK/Stock_Firmware/10c_partitions
PHP:
fastboot erase recovery [return]
fastboot erase laf [return]
fastboot flash laf laf.img [return]
fastboot reboot [return]
I got to download mode, but my phone is not detecting the download mode (no usb connection, no usb connection sound)
If I plug in the phone regularly and let It boot - it is stuck at LG logo, and if I plug it in - I hear USB connection sound and it detects, however I can't use the flash tool (2015 or 2014) to flash it.
I changed the port to 41 like in the LG tool flash tutorial (http://forum.xda-developers.com/showthread.php?t=2432476)
Today I tried to go Ubuntu Linux path - and plugged it in in both download and regular mode (like in this guide http://forum.xda-developers.com/showthread.php?t=2582142)
and I didn't see it plugged in when I typed
PHP:
ls /dev/sd*
I am under windows 8.1
I also tried windows xp sp3 virtual machine
Anything else that you can suggest?
Thanks
Andrew
Click to expand...
Click to collapse
Restore these partitions in fastboot,
1- sbl1.img
2- aboot.img
3- rpm.img
4- tz.img
After this, your phone must be detected by computer,
.me said:
I can go to download mode, but computer doesnt recognize that it's connected (doesnt appear in device manager)
I can only do factory reset. (Vol Down + Power) thats the right way, correct?
Don't see any other options.
When I try to get out of the factory restore screen by pressing any vol up or down - it hangs
Click to expand...
Click to collapse
Factory reset will make when u will press 2 times power button, no vol, correct it. If you can go fastboot, u can rewrite your partitions.
Factory is vol - + power and while pressing vol - repress power button
Ganjax said:
Factory reset will make when u will press 2 times power button, no vol, correct it. If you can go fastboot, u can rewrite your partitions.
Factory is vol - + power and while pressing vol - repress power button
Click to expand...
Click to collapse
Whats the key combination for fastboot? or how do I get into fastboot?
.me said:
Whats the key combination for fastboot? or how do I get into fastboot?
Click to expand...
Click to collapse
fastboot turn on only when images wrote is not valid. So dont try this. Try go factory reset, or bootloader
Ganjax said:
fastboot turn on only when images wrote is not valid. So dont try this. Try go factory reset, or bootloader
Click to expand...
Click to collapse
I tried to do factory reset - I confirm the restore to defaults - android with his back open appears and after 3-4 seconds phone reboots
How do I get to the bootloader?
Turn off phone. Press Vol+ and plug usb cable
Ganjax said:
Turn off phone. Press Vol+ and plug usb cable
Click to expand...
Click to collapse
I see the download mode - but windows or linux doesn't detect it
nor any of the tools detect it either.
.me said:
I see the download mode - but windows or linux doesn't detect it
nor any of the tools detect it either.
Click to expand...
Click to collapse
It show "Firmware update?"
and ROOTED status or UNROOTED?
Does this phone have? Is there a way to boot into such mode so I can flash something via fastboot?
Power and volume down keys just lead to some test mode. Holding the volume down while connecting USB does nothing as well.
I'm just having the same prob with --U51
Thanks
Not meaning to necrorez a thread as the entire forum section is inactive...
On Y625-U21 the best way to enter fastboot mode is via adb:
- activate usb debug
- use "adb reboot bootloader"
you are now in fastboot mode. Notice that on the phone you won't see a special screen: just the huawei logo like it's stuck, but you can use fastboot to do what you want (unlock the bootloader since it won't require codes, run TWRP, flash TWRP etc etc...)
Hey guys, I've been trying to unlock my bootloader so that I can try and root my Maven 3 via Magisk. The problem is, I can't get into the bootloader. If I try to reboot to the bootloader from recovery mode, it just restarts like normal. Same thing when I try using adb commands in the cmd prompt. I am on Windows 7.
I think it could be unlocked trought EDL mode. But we need some expert help
I unlocked my phone with at&t but I think it only unlocked the SIM.
I enabled usb debugging and oem unlock, but when I issue the command (in ubuntu term)
adb reboot bootloader
Click to expand...
Click to collapse
is just boots into the android system.
Any clue on what to do?
I have the same question - bootloader mode will not load when I issue "adb reboot bootloader", nor will it go into bootloader when I go into recovery mode (via POWER + VOLUME UP) and then I choose the "Bootloader" option. The phone just boots into the system. When I use "adb reboot recovery" it does go into recovery mode, and I am able to get a shell and copy files via adb just fine. I am using the latest platform-tools.
This is a ZTE Z835 (Maven 3), AT&T, carrier unlocked phone.
I don't think there is a bootloader... I have not found any fastboot-compatible mode on this device nor have I heard anyone else find one. You have FTM mode (Power + Volume Down) and EDL mode (adb reboot edl). EDL mode lets it work with QFIL, and with QFIL, you can literally dump and modify any partition on the device you want... I'm not sure what else you want. There's a new method for unlocking the bootloader https://www.xda-developers.com/unlock-bootloader-zte-phones/. I found that my devinfo partition was already unlocked, but you may need to check. I'm going to try and figure out how to create a recovery.bin partition able to be flashed in QFIL.
LG V20 910
On boot, it shows the LG logo, but does not start.
When I hold Vol up and plug in usb, the same thing happens
When I hold Vol down and plug in usb it does boot to fastboot
Factory reset gives a kernel crash error
adb does not recognize the device
fastboot via command prompt in windows does recognize it
LGUP does not recognize it
Is there a way for me to flash back to H91510e_00_VTR_CA_OP_1205.kdz with Fastboot, or is there another method to get download mode again?
How did you brick your phone? If you just turned it on one day and this happened, it is more than likely a hardware problem.
Since you say that you can get to fastboot -- I am guessing you were rooted since the H910 doesn't have fastboot without the engineering bootloader.
If so, then fastboot boot twrp.img
If TWRP will boot, you can fix your phone from that.
-- Brian
I got a LG V20 H910 model and I cannot reboot the phone into the fastboot mode to get the device ID. I tried to do this on Windows and Linux and everytime I enter the adb reboot bootloader command, it will just reboot the phone but not into fastboot mode. I even tried to turn the phone off and tried booting it up by holding the power button + volume up and power button + volume down and it will still boot up normally.
Any help will be most appreciated.
follow the h910 root instructions, the bootloader doesn't actually get unlocked, instead the bootloader is replaced with a developer bootloader ** do a backup dump using LGUP even though the instructions say you don't have to!!(I ruined a phone by not)..... check antirollback too
https://forum.xda-developers.com/t/root-howto-at-t-h910-up-to-v20g-fully-tested.3664500/ <<< instructions