[Q] Unlocked and rooted, but now can't get to recovery. - Nexus 7 (2013) Q&A

I unlocked and rooted my Nexus 7 and installed TWRP. However, I can't get back to the bootloader or recovery. I've tried a couple things.
1) The basic power button + vol up/down. It doesn't boot at all. Even when I was unlocking the bootloader originally, that was a strange task. I would hold the buttons, it wouldn't do anything, and then a minute or two later, the bootloader would show up. However, it doesn't work at all now.
2) ADB. I tried to, first, do ./adb reboot recovery and ./adb reboot bootloader. At first, I received "error: device not found". After I turned off MTP, I've been finding the device, but it's been offline as far as the Terminal (Mac user) is concerned and I have been unable to find a way to make adb recognize the device.
Can someone please tell me why stuff is not working correctly? I was able to root my Galaxy Nexus easily, but this seems a bit ridiculous.

You are pushing the wrong button combination. See this post:
[Info] Guide to entering safe mode, bootloader, stock recovery
Regarding your adb device offline issue, you need to upgrade to the latest 1.0.31 adb and then acknowledge the RSA fingerprint on the tablet screen.

Related

[Q] I can't access Bootloader or Recovery PLEASE Help!

My HTC One M8 (Verizon) is seemingly bricked. My phone is rooted, S-Off, with the stock ROM. I have been trying to update to the latest OTA update by returning to stock. I had previously modified some entries in the Build.prop and Platform.xml. I knew those had to be default in order for the OTA to work. I had copied the original files and pasted them to my SD Card so that I could simply cut the modified versions, paste them to my SD Card, and cut the originals from my SD Card and put them in their corresponding system folders.
Upon a reboot something apparently went horribly wrong because all my phone does now is boot with the white screen and green HTC Logo, then the screen goes black. I have tried the typical Power Button + Volume Down but it won't enter the boot loader. The good news is that the USB port seems to still work for my windows computer recognizes a device connecting to it but it doesn't show up as an interactive device in windows explorer..if that makes sense.
Please Help!
SF-Echo18 said:
My HTC One M8 (Verizon) is seemingly bricked. My phone is rooted, S-Off, with the stock ROM. I have been trying to update to the latest OTA update by returning to stock. I had previously modified some entries in the Build.prop and Platform.xml. I knew those had to be default in order for the OTA to work. I had copied the original files and pasted them to my SD Card so that I could simply cut the modified versions, paste them to my SD Card, and cut the originals from my SD Card and put them in their corresponding system folders.
Upon a reboot something apparently went horribly wrong because all my phone does now is boot with the white screen and green HTC Logo, then the screen goes black. I have tried the typical Power Button + Volume Down but it won't enter the boot loader. The good news is that the USB port seems to still work for my windows computer recognizes a device connecting to it but it doesn't show up as an interactive device in windows explorer..if that makes sense.
Please Help!
Click to expand...
Click to collapse
When you connect it to the PC can you pick up the device with adb? If so, have you tried to run the command from adb to boot it into bootloader? adb devices ... if found, adb reboot bootloader
:fingers-crossed:
BerndM14 said:
When you connect it to the PC can you pick up the device with adb? If so, have you tried to run the command from adb to boot it into bootloader? adb devices ... if found, adb reboot bootloader
:fingers-crossed:
Click to expand...
Click to collapse
I'm not too familiar with ADB commands but I typed in "adb reboot recovery" and it said: "error: device not found" so even if my command was wrong it's still not detecting it. I also tried: "fastboot reboot bootloader" and it just says "waiting for device"
Also I feel like it's worth mentioning the phone is automatically rebooting every two minutes or so (haven't timed it exactly but it's a while). Still showing the green HTC Logo then the screen goes dim, then the screen turns off.
SF-Echo18 said:
I'm not too familiar with ADB commands but I typed in "adb reboot recovery" and it said: "error: device not found" so even if my command was wrong it's still not detecting it. I also tried: "fastboot reboot bootloader" and it just says "waiting on device for device"
Also I feel like it's worth mentioning the phone is automatically rebooting every two minutes or so (haven't timed it exactly but it's a while). Still showing the green HTC Logo then the screen goes dim, then the screen turns off.
Click to expand...
Click to collapse
Try holding volume UP + Power button, this simulates a "battery pull", just hold it in for a while it can take a while to "pull", when it's off try again booting into bootloader, volume DOWN + Power button.
BerndM14 said:
Try holding volume UP + Power button, this simulates a "battery pull", just hold it in for a while it can take a while to "pull", when it's off try again booting into bootloader, volume DOWN + Power button.
Click to expand...
Click to collapse
I held Volume Up + Power Button and it showed the white screen with the green HTC logo. I then released all buttons. Once the screen turned off I then held Volume Down + Power Button for two minutes straight and nothing happened.
Even though we haven't found a solution yet, I am appreciative of the help.
sounds like you never installed the htc drivers for your phone, hence your pc doesn't see the phone when you are doing ADB commands.
install the drivers for it, then try the ADB commands via your pc
and dont mess with the build prop or other system files unless you have a working back up and are 101% certain about what you are doing..
Just remember to change directory in command prompt to the folder where adb.exe is located.
I don't know why the device doesn't reboot into bootloader though when you hold volume down + power button, shouldn't have to hold it for 2minutes. Holding volume up + power button to simulate a "pull" should only take up to 20 seconds or so at most and pressing volume down + power will then immediately take you into bootloader mode, or at least it's supposed to.
Did you release the volume up / power combo when the screen went dead or before? Try holding it until the phone shuts off and then right away press volume down + power.
Sorry if I'm not answering right away though, busy eating, and will be here and away for the next hour or so while I get ready for work =o( once I leave for work I'll only be able to help some more after like 2 hours or so. Hopefully we can do something before then though =o)
wase4711 said:
sounds like you never installed the htc drivers for your phone, hence your pc doesn't see the phone when you are doing ADB commands.
install the drivers for it, then try the ADB commands via your pc
and dont mess with the build prop or other system files unless you have a working back up and are 101% certain about what you are doing..
Click to expand...
Click to collapse
You're right, I didn't install the drivers. I did so and ADB was able to recognize it and I was able to access the bootloader. Thank you everyone for your help. I won't be making the mistake again.
SF-Echo18 said:
You're right, I didn't install the drivers. I did so and ADB was able to recognize it and I was able to access the bootloader. Thank you everyone for your help. I won't be making the mistake again.
Click to expand...
Click to collapse
So you'll be able to fix it from here on then? I was just about to link this thread to you as well should you have gotten adb to work again, it's for the RUU for Verizon seeing as you said you're on Verizon.
But going by your response up there you might already know how to fix this issue further :good:
BerndM14 said:
So you'll be able to fix it from here on then? I was just about to link this thread to you as well should you have gotten adb to work again, it's for the RUU for Verizon seeing as you said you're on Verizon.
But going by your response up there you might already know how to fix this issue further :good:
Click to expand...
Click to collapse
Indeed I appreciate it, but I just finished installing the RUU ha. Hopefully this thread will be of use to someone in a similar circumstance in the future.
Share another method of getting into recovery mode on non-responsive blank screen
Hi,
I just want to share how I accessed recovery mode with the same build.prop issue but with S-ON (might work with S-Off too).
I found the solution from here:
http://forum.xda-developers.com/htc...ter-download-mode-t2853100/page2#post62490577
To get into recovery mode on a non-responsive blank screen, hold the power button and volume up button at the same time and then approximately after 10 seconds, switch from pressing the volume up to volume down button before the HTC logo white screen shows while still holding down the power button. After, a white boot screen will give an option to go into recovery mode.

Retrieve files from the device with a broken screen

Hello,
I've tried to search the right thread but I didn't find anything.
I dropped my Oneplus 3 yesterday and the screen + digitizer don't work anymore, almost black...
I will try to repair on my own (~$100) but I would like to retrieve the pictures from the device first.
As my OP3 run out of battery, I can't switch it on again and enter the PIN to plug it on my computer using USB cable. I guess the only way I have is to use ADB and "pull" the folder.
I installed ADB + USB drivers.
I hold down POWER + VOLUME DOWN when the devices is off. I saw some video on Youtube about recovery and press the following buttons :
- back (to choose between languages)
- Volume Down (x2) + Power to select English
- Volume Down + Power to select "Install from ADB" => But I am not sure this is the right menu. One of the Youtube video show that "Install from ADB" is the first choice, whereas on another video, this same entry is the second choice.
When I enter "adb devices" on my computre, I can read the serial + sideload. I guess I can't use this mode to copy files from my device. If I try to enter "adb usb" or "adb shell [...]" I get "error: closed"
I have never rooted nor installed a custom recovery on my device, only installed the official OTA update.
Does someone can help me? I do not know if I need to install something (custom recovery) or any other manipulation.
How can I know what is the menu of the recovery?
Many thanks, I hope you will be able to help me.
um, have you unlocked bootloader? else you could use the rooting tool kit posed somewhere in this forum and unlock bootloader, then install custom recovery, then timed yourself to enter the recovery since you will have the "your device is not secure screen". or just the backup option right in the toolkit which will back up everything, including your os, ect. But I don't remember if those backup file is operable on the pc, however it is worth a try since you can just install the backup again after your screen is done.
https://forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799- toolkit
I didn't unlock the bootloader. But can I do that without the screen and without being able to boot the device?
The thing I would like to know is the detailed menu when I hold down "power + volume up/down" buttons, I don't know where I can find that and what can help me.
I think unlocking bootloader will wipe everything, so doesn't really help you. And u need custom recovery to use adb pull command which you can't flash since you need unlocked bootloader.
Sent from my ONEPLUS A3003 using Tapatalk
wagoera said:
Broken Android Data Extractor tool helps us to retrieve files from the device with a broken screen. With its help, we can easily access data like contacts, text messages, videos, photos, ect and extract them out from a broken screen or dead Android phone.
Click to expand...
Click to collapse
That tool is for Samsung phones. You should have mentioned it.
I have the same issue and am trying what the OP tried. I was really hoping someone might have provided the correct sequence of buttons to press in order to get the adb pull command to work... Is anyone able to access this menu on an up-to-date OnePlus 3 (UK) and provide the menu layout, please?

Help out of my bootloop?

I just bought a 2013 Nexus 7 today for very cheap, to use in my car as a headunit and learn a bit about flashing different roms, using the timur kernal, etc. It looks like it was used at some sort of healthcare facility though, because it has some "Optum Health" software on it, deeper than just an app it remained after a factory reset. On restart the optum health logo comes up, immediately after the google logo and says loading, well before it actually loads to the home page of the tablet. So it's pretty deep. I was thinking a fresh factory ROM would help me out.
I was following this guide to get twrp on the phone, as wifi wasn't working (most likely because I had tried to remove the optum stuff by disabling apps, and I got a little trigger happy) load via adb:
https://www.xda-developers.com/how-to-install-twrp/
Everything was cool until I went to restart it. I typed "fastboot reboot" into the command prompt, she restarted, and gets infinitely stuck at the "Optum Health" logo, and the word "Loading" pulses underneath.
I can't get it back to the bootloader by holding the volume buttons and "hold", the cmd/powershell doesn't see the device connected. However, the computer makes the chime sound of a device connecting when I try to open the bootload menu using the buttons, the power shell waits longer to say it failed, but it still doesn't work.
Do I have any options? Or did I completely brick my old, cheap, facebook marketplace, probably stolen from a hospital tablet?
solson1041 said:
I can't get it back to the bootloader by holding the volume buttons and "hold", the cmd/powershell doesn't see the device connected. However, the computer makes the chime sound of a device connecting when I try to open the bootload menu using the buttons, the power shell waits longer to say it failed, but it still doesn't work.
Do I have any options? Or did I completely brick my old, cheap, facebook marketplace, probably stolen from a hospital tablet?
Click to expand...
Click to collapse
Follow these instructions to resolve the problem and flash up-to-date Android - https://wiki.lineageos.org/devices/flo/install
"With the device powered off, hold Volume Down + Power until the bootloader appears, then release the buttons." it really works.
Then connect it to a PC and install proper USB driver - https://www.xda-developers.com/google-releases-separate-adb-and-fastboot-binary-downloads/
Once you get ADB & Fastboot installed on your PC or linux , do a command prompt with the device connected.
adb devices
It should list your device in your terminal output. If and when it does..If your a little hinky on the buttons just do a command prompt: adb reboot recovery, adb will reboot your device for you into recovery mode. Then follow the LOS instructions provided for you & you will be amazed at how great your tablet works. Just a little FYI, if you've never done this before, find the "pico" gapps, don't try to install any of the bigger ones, there is not enough room on the sys partition for the full gapps install. After & if you get pico installed you can always add to it with all the room you have left now on the rest of the device. Also when you are installing LOS, make sure you find and install the gapps at the same time you install the OS, before you reboot your device. It will save you a lot of headaches. Just follow the directions and you will be very happy.

Sorta/Kinda Brick After Attempted TWRP Install - Moto G7 Play 1952-4

Ok, so I’ve run myself off the road into a deep hole and am hoping someone can help me climb out and get back onto the correct path.
I have a Motorola Moto G7 Play 1952-4 (channel). My goal is to install TWRP, and LineageOS 18.1 with GAPPS. Root is not important at the moment.
Here’s what I did:
After successfully unlocking the bootloader (thank you Motorola), I downloaded TWRP for Chanel from the TWRP.me site. My plan was to first install TWRP, then use TWRP’s install feature for LoS 18.1 and the GAPPS.
To install TWRP recovery, I followed the instructions on the TWRP site. After starting the ADB server on my Windows 10 PC and booting the phone into the stock recovery, I used “adb boot twrp-3.5.2_10-0-channel.img” to temporarily boot into TWRP recovery. I then used ADB to push TWRP.zip onto the internal SDCARD. I used TWRP’s install feature to install "twrp-installer-3.5.2_10-0-channel.zip", presumably to both slots. To the best of my memory, everything completed correctly.
BUT . . . when I powered down the phone and attempted to boot into recovery, all I got was a black screen with a small N/A in the upper left corner instead of the familiar TWRP screens. After a while, the phone booted itself into the stock U.S. Cellular Android 10 (Hell Oh - Moe Toe). I've done several power-off/power-on cycles to no avail. I am able to get to and use the stock OS.
So, like TWRP.me suggests, I figured I’d just flash it back to stock and start over. Um, nope. I can Vol-DN/Power to the bootloader menu, but “adb devices” doesn’t see the phone, preventing me from flashing anything. USB Debugging is enabled and the phone says "USB Transfer Mode: Connected". “adb devices” sees the phone while Android 10 is running, but as soon as I boot into recovery, the phone “disappears” from ADB.
The only other thing I could think to do was to use the “Rescue” function in the Lenovo/Motorola Smart Assistant. While ADB can’t see the phone, LMSC sees it just fine and I was able to rescue/reinstall the stock OS successfully, or so LMSC said. Unfortunately, LMSC doesn’t seem to fix whatever is wrong with the recovery. Interestingly, “N/A” no longer appears after Vol-DN/Power and select Recovery Mode, the black screen now says “bad key”, followed a little while later by the Android logo with a “!” in the middle of the screen and “No command” below it.
And that’s the hole I now reside in. Despite considerable searching/reading here at XDA, I'm at a total loss for what to do next.
SOOOO, I’m hoping someone can help me:
1. Fix the N/A black screen
2. Get into a mode that ADB can see
3. Properly install TWRP
Thank you in advance,
Tenaya
Did you flash the copy-partitions.zip while in TWRP?
Maybe you could borrow some ideas from the official install instructions for LineageOS.
Install LineageOS on channel | LineageOS Wiki
wiki.lineageos.org
I had some strange intermittent USB connectivity issues with a few Moto G7 Plus devices with my main laptop, but was fine connecting on a 12 year old desktop computer. So perhaps you could check to see if adb connects on another machine. Only other idea I have is to somehow flash back to stock again with fastboot.
[Guide][Channel][Stock]Moto g7 play Factory Firmware Images
Moto g7 play Android 9 and 10 Factory Firmware Stock Images Info Updated on 23-11-2020 Hi there. I have found the moto g7 play stock images mirrored in lolinet servers for Android 9, and from motorola servers for Android 10. Go and download...
forum.xda-developers.com
zpunout,
Thank you for your response.
zpunout said:
Did you flash the copy-partitions.zip while in TWRP?
Click to expand...
Click to collapse
No, I didn't know I needed to; nothing about that is mentioned by TWRP.me.
This is unknown territory for me, but your question sparks a thought for me. I wonder if 1) The stock recovery is in the "other" slot, and 2) there is some way to boot from it. That could be a way to sidestep the ADB devices problem I'm having?
zpunout said:
So perhaps you could check to see if adb connects on another machine.
Click to expand...
Click to collapse
At the moment, I have no way to do that. I don't think the USB connection is the culprit, ADB "sees" the phone just fine while the phone is in the stock OS, just not in recovery (EDL?.
zpunout said:
Only other idea I have is to somehow flash back to stock again with fastboot.
Click to expand...
Click to collapse
That's my current plan, but FASTBOOT won't flash anything while ADB devices won't/can't see the phone. I'm hoping someone has a workaround of some sort for that.
Tenaya
Hi, first of all lets set some things straight, you are experiencing a Boot Loop, in other words a software brick. (Soft Brick) now luckily these are fairly simple to fix. Sorry to break it to you but the N/A Screen won't disappear, that used to be the Blue/Yellow Motorola Splash Screen, but since you unlocked your phone it'll only show N/A but thats okay there are tools that can help you customize this and change it later on.
Now why is it on a boot loop you may ask, well that is because there is no more operating system to load in. But worry not, try to get into your bootloader, and try to connect adb through there.
Tenaya43 said:
Ok, so I’ve run myself off the road into a deep hole and am hoping someone can help me climb out and get back onto the correct path.
I have a Motorola Moto G7 Play 1952-4 (channel). My goal is to install TWRP, and LineageOS 18.1 with GAPPS. Root is not important at the moment.
Here’s what I did:
After successfully unlocking the bootloader (thank you Motorola), I downloaded TWRP for Chanel from the TWRP.me site. My plan was to first install TWRP, then use TWRP’s install feature for LoS 18.1 and the GAPPS.
To install TWRP recovery, I followed the instructions on the TWRP site. After starting the ADB server on my Windows 10 PC and booting the phone into the stock recovery, I used “adb boot twrp-3.5.2_10-0-channel.img” to temporarily boot into TWRP recovery. I then used ADB to push TWRP.zip onto the internal SDCARD. I used TWRP’s install feature to install "twrp-installer-3.5.2_10-0-channel.zip", presumably to both slots. To the best of my memory, everything completed correctly.
BUT . . . when I powered down the phone and attempted to boot into recovery, all I got was a black screen with a small N/A in the upper left corner instead of the familiar TWRP screens. After a while, the phone booted itself into the stock U.S. Cellular Android 10 (Hell Oh - Moe Toe). I've done several power-off/power-on cycles to no avail. I am able to get to and use the stock OS.
So, like TWRP.me suggests, I figured I’d just flash it back to stock and start over. Um, nope. I can Vol-DN/Power to the bootloader menu, but “adb devices” doesn’t see the phone, preventing me from flashing anything. USB Debugging is enabled and the phone says "USB Transfer Mode: Connected". “adb devices” sees the phone while Android 10 is running, but as soon as I boot into recovery, the phone “disappears” from ADB.
The only other thing I could think to do was to use the “Rescue” function in the Lenovo/Motorola Smart Assistant. While ADB can’t see the phone, LMSC sees it just fine and I was able to rescue/reinstall the stock OS successfully, or so LMSC said. Unfortunately, LMSC doesn’t seem to fix whatever is wrong with the recovery. Interestingly, “N/A” no longer appears after Vol-DN/Power and select Recovery Mode, the black screen now says “bad key”, followed a little while later by the Android logo with a “!” in the middle of the screen and “No command” below it.
And that’s the hole I now reside in. Despite considerable searching/reading here at XDA, I'm at a total loss for what to do next.
SOOOO, I’m hoping someone can help me:
1. Fix the N/A black screen
2. Get into a mode that ADB can see
3. Properly install TWRP
Thank you in advance,
Tenaya
Click to expand...
Click to collapse
HellxDo,
Thanks for the reply.
After I used LSMC to "rescue" the phone, it stopped displaying N/A" and began showing "Bad key". Different, but not better.
HellxDo said:
Now why is it on a boot loop you may ask, well that is because there is no more operating system to load in.
Click to expand...
Click to collapse
Hmmm . . . The phone currently boots into the stock rom (U.S. Cellular Android 10) if I wait a while after "Bad key" displays. If there's no more OS to load in, how do it do dat?
HellxDo said:
But worry not, try to get into your bootloader, and try to connect adb through there.
Click to expand...
Click to collapse
My (limited) understanding is that the only way to "get into" my bootloader was with the Vol-DN/PWR button combination. When I do that , I get the bootloader menu, but ADB doesn't/can't see the phone - nothing is listed when I run ADB devices and fastboot won't/can't flash anything.
Is there a different/better way to get into my bootloader?
Tenaya
And the adventure continues. Here's some more information.
While continuing to research this, I was wondering if there was another way to boot the phone into EDL mode and Google found some instructions at thecustomdroid.com for using ADB to boot the phone into EDL. I booted the phone to the stock OS and used the command adb reboot edl. The phone immediately went blank, followed shortly by the "bad key" message. After a while it again booted into the stock rom.
I still cannot use fastboot because it doesn't/can't see the phone.
I have also discovered that if i use VOL-UP/PWR, the phone boots directly to "bad key", followed by the stock rom. Another dead end.
I also used LMSC to "Rescue" the phone again and learned several things:
While LMSC is running, it boots the phone into the bootloader menu and begins to flash. If I do adb devices while LMSC is flashing, the phone STILL doesn't appear in the list.
LMSC definitely flashed the stock OS - when the phone rebooted, it was back to the stock OS Android start screen as if it had never been configured.
There is still no recovery and I still can't flash anything.
LMSC is somehow able to flash without a recovery present.
Anyone have any other ideas?
Tenaya
Tenaya43 said:
And the adventure continues. Here's some more information.
While continuing to research this, I was wondering if there was another way to boot the phone into EDL mode and Google found some instructions at thecustomdroid.com for using ADB to boot the phone into EDL. I booted the phone to the stock OS and used the command adb reboot edl. The phone immediately went blank, followed shortly by the "bad key" message. After a while it again booted into the stock rom.
I still cannot use fastboot because it doesn't/can't see the phone.
I have also discovered that if i use VOL-UP/PWR, the phone boots directly to "bad key", followed by the stock rom. Another dead end.
I also used LMSC to "Rescue" the phone again and learned several things:
While LMSC is running, it boots the phone into the bootloader menu and begins to flash. If I do adb devices while LMSC is flashing, the phone STILL doesn't appear in the list.
LMSC definitely flashed the stock OS - when the phone rebooted, it was back to the stock OS Android start screen as if it had never been configured.
There is still no recovery and I still can't flash anything.
LMSC is somehow able to flash without a recovery present.
Anyone have any other ideas?
Tenaya
Click to expand...
Click to collapse
If "fastboot devices" can't see your device while in bootloader mode, that could be the same issue I had relating to your USB compatibility with your computer. Try to borrow someone else's computer, install "platform-tools" to see if the "fastboot devices" command works.
If that works, next see if the command "fastboot getvar all" works. You should get many lines of info come up. If it gets stuck after a couple of lines, then the symptoms are the same as what I had. I have a bunch of really old laptops and a desktop sitting around with platform-tools just for this issue. I have heard others say that plugging the phone in via a USB hub sometimes gets fastboot to connect properly, but I haven't had success yet.
OK, some progress.
I found this:
[GUIDE][TOOL] Reboot to EDL mode from FASTBOOT! No More "Test Point Method"! [kenzo]
kenzo has graciously hacked fastboot.exe to force the phone into EDL mode. Using that, the phone booted into EDL and fastboot devices can now "see" the phone. Thank you kenzo.
BTW, kenzo's fastboot-edl isn't G7 Play specific, it was originally for the Xiaomi Redme Note 3 and seems to work for some other Android phones as well.
I'm still working on getting TWRP and LoS installed, but at least fastboot can talk to the phone.
zpunout said:
I have heard others say that plugging the phone in via a USB hub sometimes gets fastboot to connect properly
Click to expand...
Click to collapse
I also had no luck with a USB hub.
I haven't tried another computer yet; I'm going to see what I can accomplish with fastboot-edl.
Tenaya
fastboot oem blankflash

Bootloading Kyocera DuraXV Extreme

Hello, I'm having some serious trouble bootloading my Kyocera DuraXV Extreme (AOSP)
I've went into developer options and activated USB debugging and allowed OEM unlocking.
But I get stuck on rebooting into bootloader mode. I've tried different approaches:
1. Starting up phone while holding volume up and down buttons. Then select "reboot to bootloader".
2. adb reboot bootloader command
Both options reboot the phone without going into bootloader mode.
Seems Kyocera decided to somehow lock the bootloader mode. Anyone know of a workaround here?
jonas.sj said:
Hello, I'm having some serious trouble bootloading my Kyocera DuraXV Extreme (AOSP)
I've went into developer options and activated USB debugging and allowed OEM unlocking.
But I get stuck on rebooting into bootloader mode. I've tried different approaches:
1. Starting up phone while holding volume up and down buttons. Then select "reboot to bootloader".
2. adb reboot bootloader command
Both options reboot the phone without going into bootloader mode.
Seems Kyocera decided to somehow lock the bootloader mode. Anyone know of a workaround here?
Click to expand...
Click to collapse
My comments below are based on the belief that you are trying to unlock the bootloader.
I am not familiar with this phone but generally the two steps mentioned by you are not enough to unlock the bootloader. After those steps, you'll have to issue a command via adb to unlock the bootloader and if successful, then you can boot into it for further operations. The command will vary between devices, so search and profit.
Thanks, this cleared it up a bit, you are right, I'm trying to unlock it.
I'm trying the command fastboot flashing unlock but only getting the message < waiting for any device >. I read somewhere that I might need some USB drivers but I don't know where to find them. I have the latest version of the standard USB drivers for the phone, but as I understand it I need special drivers for this?
I'm trying to follow the steps here: https://www.ifixit.com/Guide/How+to+unlock+the+bootloader+of+an+Android+Phone/152629#s317298
I get stuck on the step:
Enter the command adb reboot bootloader
Wait a couple seconds until your device rebooted into the bootloader, then enter the command fastboot flashing unlock
My phone isn't "rebooted into the bootloader", it just reboots. It gives the message "< waiting for any device >" when I write fastboot flashing unlock
jonas.sj said:
I'm trying to follow the steps here: https://www.ifixit.com/Guide/How+to+unlock+the+bootloader+of+an+Android+Phone/152629#s317298
I get stuck on the step:
Enter the command adb reboot bootloader
Wait a couple seconds until your device rebooted into the bootloader, then enter the command fastboot flashing unlock
My phone isn't "rebooted into the bootloader", it just reboots. It gives the message "< waiting for any device >" when I write fastboot flashing unlock
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It should be a driver issue. When the phone is on and you connect it to the PC/laptop and send the command 'adb devices', does it show an alphanumeric value? Likewise, when you are booted into the bootloader by key combination and send the command, 'fastboot devices', does it show the same alphanumeric response? If so, the drivers are installed properly. If not, either you don't have the correct drivers or they are not installed properly. Try installing the drivers again after disabling driver signing in Windows on your PC (search for it on Google).
Hello, can you clarify what you mean by "booted into the bootloader by key combination"?
My problem is I cannot boot into bootloader at all.
Any attempt at doing so results in a normal boot of the device.
jonas.sj said:
Hello, can you clarify what you mean by "booted into the bootloader by key combination"?
My problem is I cannot boot into bootloader at all.
Any attempt at doing so results in a normal boot of the device.
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Are you sure that the key combination for booting into bootloader is what you described in the first post?
1. Starting up phone while holding volume up and down buttons. Then select "reboot to bootloader".
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I see Power plus Volume Up as the suggested one from a Google search. Try that.
If you can't even boot into the bootloader with the correct key combination, I don't know how to help you further since we are starting to go in circles. I am sorry.
Hello, thank you so much for trying to help me. It seems I can't boot into bootloader. Volume up + power gives the same result as what I did before.: It opens a "Recovery" menu where I can choose reboot to bootloader, but this option just reboots the phone.
I've been in contact with Kyocera and they say:
Thanks for contacting the Kyocera Customer Support. We will be more than happy to assist you with your concern
In this case allow us to inform you that since this device is a basic phone , it doesn't have the option to activate fastboot mode. By installing something that will change the way the phone works , that will void the warranty that came with the phone. We as manufacture can not help you to modify the software that came with the phone.
So the phone's fastboot mode has been deactivated. But since it's an android I guess it should still be possible with some workaround. I just don't know whee to start, I've been researching for a week with no result.
Something interesting ehre, maybe someone with more coding knowledge can tell what's going on.
I found the source code for the phone and located a file called recovery.c which I guess handles the menu I see when I press volume up + power button. Maybe some clue to why the phone isn't going into fastboot mode?

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