[Q] Power button unresponsive in bootloader/fastboot - Nexus 5 Q&A, Help & Troubleshooting

I just bought a Nexus 5 today and I wanted to root it as soon as possible primarily to disable those pesky ads in Youtube. I have been following guide after guide to get this working, but I keep getting stuck when trying to unlock the bootloader.
Just as a side note, I have tried this on two different computers and have been using the official newest SDK files for adb/fastboot tools and for google drivers.
I have enabled usb debugging and I can use both "adb devices" when the Nexus is on and "fastboot devices" in FASTBOOT MODE with success so I don`t think I have a driver issue.
Basically I got phone, 4.4 was installed, and then I did the update to 4.4.2 before trying to unlock the bootloader.
When I put the phone into fastboot mode, I can scroll though different commands, such as "power off", "start"... with the volume buttons, but when I press the power button, nothing happens. Then when I connect the device to my computer and type "fastboot oem unlock" into the command prompt, I am greeted with the option to unlock the bootloader and I can scroll through yes or on, but again, when I press the power button, nothing happens. I have tried clicking it multiple times as well, and when I hold it for a about 10 seconds, the device powers off, still locked.
Like I said, i don;t believe this is a driver issue, because even when the phone is not plugged in, I can`t select those options at the fastboot screen.
Would any of you have any advice for me, perhaps I`m missing something?

I tried charging the phone completely, figured maybe it wouldn`t work because the battery charge was too low. Still doesn't work, I can`t even get into recovery mode.
Think I may have a dud? I don't know what do to, I can't really say I want to return the phone because it won't go into recovery mode or because I can't unlock the bootloader...
Am I the only one?

Accessing recovery is a standard feature of the device and in itself has nothing to so with rooting or unlocking bootloaders so you can definitely use this as reasoning.
I assume you used vol down + power to get into bootloader. What if you vol up + vol down + power to bootloader?
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What if you fastboot flashed just the bootloader from the factory image. Maybe something is messed up with it where it doesn't recognize the power button. Just an idea a I've never seen this issue before.

Thank you for the replies, I have tried both volume down+ power and both volume keys and power. As I read somewhere else, it`s like it keeps two bootloaders, one for 4.4 and the other 4.4.2. Both do not respond to the power button input.
Would I be able to flash over the bootloader without unlocking it?
If I do decide to return it and they ask me why I need to access recovery (I galled google support last night and they told me they wouldn't support me when it comes to the bootloader, he also didn't understand what I was asking him), for which reason would I need to access recovery?
This is a replacement phone to my old GS3 which broke. I had a Best Buy replacement plan, so that's how I got the nexus 5. I'm almost tempted to bring it back for a GS4, with Samsung it was easy to flash over the whole phone with odin, without these bootlocker unlocker steps.
If I can flash over the bootloader without unlocking it, how would I do so?
I really do appreciate all your help with this, I love the phone otherwise but I'd like to have the option to root.
EDIT: found these steps, but the post assumes the phone already has an unlocked bootloader, but doesn't mention that it is necessary:
adb reboot bootloader
fastboot flash bootloader bootloader-hammerhead-HHZ11d.img
fastboot reboot-bootloader
fastboot flash radio radio-hammerhead-M8974A-1.0.25.0.17.img
fastboot reboot-bootloader
fastboot -w update image-hammerhead-krt16m.zip
fastboot reboot-bootloader
I gues there is one way to find out...

Read a lot before you decide on the s4. The boot loader is locked and you are extremely limited to what and how you can flash roms. I would not recommend the s4, my opinion.
And I spaced out the fact you can't unlock the bootloader. That's a problem.

I tried the above steps to flash the bootloader, it won't let me do it since the device is locked...

Just rma it. Tell them it cannot enter recovery from bootloader which is essential to factory reset the device in the Case it doesn't boot.
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murc585 said:
I tried the above steps to flash the bootloader, it won't let me do it since the device is locked...
Click to expand...
Click to collapse
try to boot into recovery from adb command, and see if power button works (wipe data and cache)

Ok, I did "adb devices", I see my device and the word "device" after. When I try the "adb reboot recovery" command nothing happens.
Edit:I got the no command window finally, pressed the volume yet, the menu showed up, I was able to flash the cache and do a data wipe. I will try the bootloader now
Edit 2: after data wipe and cache format from recovery, bootloader still does not recognise power button, can i flash anything from recovery?

Would there be a way to sideload the update through adb?

There is clearly an issue. Please rma
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Alright, seems I have no choice but thank you for helping me troubleshoot this issue.

Related

Wifi Xoom Rooted? RSD mode 3 -- no fastboot, no adb

Hi. I was on #xoom at freenode earlier and I got some help, but unfortunately no solution. (thank you Kas, EbonyGhost, Pyrator and the others)
I flashed the recovery here:
http://forum.xda-developers.com/showthread.php?t=1074979
I flashed... THE ZIP!!
The flash went well, then the device rebooted and showed "Starting RSD mode 3"
I have only 2 screens:
- with VolUp + power = dual core techno + "Starting RSD mode 3"
- with VolUp + power then immediately VolDown = only the dual core tech logo, no text
Either way: no adb, no fastboot. Tried other usb slots. Tried reinstalling moto drivers.
The xoom never gets recognised by windows. I don't have the dongdong sound when I plug it, in either mode.
I already tried this:
http://forum.xda-developers.com/showthread.php?t=973355
but I get < waiting for device > because it's not recognised by windows...
Any other idea?
Thanks
Regards
Note: I might be away for several days. I'll try everything you say, but maybe I won't be able to post my feedback until monday night (around GMT timezone)
I have this exact problem.
So, when you power up the device, you press 'vol-down' when you see the Motorola logo? Because that should put you into fastboot mode. Don't use the power+vol-up, only turn on device and press vol-down when you see the logo. I've been in the same situation, but was able to get fastboot working like this...
if you hold the volume down button and power on the device and get no fastboot then you may as well just send it to motorola. looks like this is becoming a problem and cannot be fixed.
mbroeders said:
So, when you power up the device, you press 'vol-down' when you see the Motorola logo? Because that should put you into fastboot mode. Don't use the power+vol-up, only turn on device and press vol-down when you see the logo. I've been in the same situation, but was able to get fastboot working like this...
Click to expand...
Click to collapse
This. Flashing the wrong partition should *not* mean that you can't get into fastboot any more.
I know that volume down should get me to fastboot but in fact it doesn't. Windows never makes dong dong when i plug the xoom... My drivers are ok because my nexus one gets recognized instantly and adb is working fine on the phone...
Any reason you don't use RSD to flash the wifi xoom sbf file? (I'm pretty sure someone said that was released not too long ago)
I didn't try yet, I can't find the SBF for the wifi xoom.
I tried the 3G SBF file it's not even working. I know it's not the right file for my device but since it's already bricked...
I have RSD Lite 4.9, latest moto drivers, updated using the moto tool.
When I load the sbf file in rsd lite, I can't see the device, and pushing start has no effect.
I did that when the device was showing "Starting RSD mode 3"
How can I get it back?! I tried on my windows laptop and also on a macbook, without any luck.
This is happened to me , and i flipped cuz i rendered my $600 Xoom to a paper weight , i rebooted (Volup+power then voldown) , i tried ADB and it didn't work... then i left my computer to do something, i returned to my PC and i was flipping through DOS command lines (up and down arrows) and click enter in one of the commands by mistake and it worked! the command was "fastboot erase cache"
i then typed the following to return to stock (you need the stock files)
Code:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
Thanks, but I don't have fastboot. It's always < waiting for device >
Topper Harley said:
Thanks, but I don't have fastboot. It's always < waiting for device >
Click to expand...
Click to collapse
You mentioned you tried the steps in http://forum.xda-developers.com/showthread.php?t=973355, but how did this section go:
"Even though there was no response from the device, I pressed Vol Down + power until the screen went black. I then quickly pressed and held Vol Up + power. The device then went into the bootloader, received the queued command from fastboot, and flashed the boot.img."
ed. The other suggestion I heard floating around is to flash the CDMA Xoom's SBF -- yes, it won't get you all the way there, but it might restore things up to the point where you can get into fastboot and then flash the stock images.
I did try already to fastboot flash boot boot.img (stock), then reboot pushing vol up, vol down, both, using clicking or holding them... no luck
I also tried to flash the VZW SBF file but RSD Lite doesn't even see the device. I'm trying now to get some linux running and use sbf_flash instead because I was told that it's more efficient than the linux one.
No luck yet on that part either.
I was able to get my xoom restore with the following steps:
Hold Power + Vol up to start reboot
immdiately hold Power + Vol down (This will get you to the Fastboot menu)
enter the commands
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
You've now successfully flashed your Xoom back to stock. Now it's time to relock the device.
Type fastboot oem lock, wait for the menu, the press the volume-down button. Then press the volume up button. It'll take a minute or so, then reboot. You're now completely back to stock and ready for the update.
hoopsdavis said:
I was able to get my xoom restore with the following steps:
Hold Power + Vol up to start reboot
immdiately hold Power + Vol down (This will get you to the Fastboot menu)
Click to expand...
Click to collapse
It stops here. I can't get fastboot.
I tried waiting for the battery to die and tried every combination of vol up/down/power, hold/click/double click the buttons...
I'll let it cool off for one day without battery... maybe it'll wake up wanting to give me fastboot...
I'm losing hope...
Topper Harley said:
It stops here. I can't get fastboot.
I tried waiting for the battery to die and tried every combination of vol up/down/power, hold/click/double click the buttons...
I'll let it cool off for one day without battery... maybe it'll wake up wanting to give me fastboot...
I'm losing hope...
Click to expand...
Click to collapse
I'm in the same situation here... tried basically all the same steps. I'm lost too... can't connect with ADB, Fastboot or RSD... tried all kinds of key combos as well. "Starting RSD Mode 3"... its wearing me down!!
How can i change the topic title? I wanted to say "xoom bricked?" but I typed rooted by mistake
I'm in this exact situation, and I've tried everything suggested here. I spent some time in IRC talking to a few developers, and we tried pretty much everything to get fastboot to work. No luck, so I tried RSD like you said, and that didn't work, either. Eventually we gave up, and I got an RMA from Motorola via their website. I should receive the FedEx box tomorrow so I can return it to them.
If you want, I'll report back here when the whole process is over and tell you if they end up fixing it for free or not. It sounds like it'll probably be at least a week, though.
benso87: yes, tell me. I have time don't worry (away from home until may 28th)
Otherwise, I think mine is definitely a brick. I tried the last thing I didn't: boot linux and test sbf_flash: not working.
I'll try to send it to moto (the device is imported).
I'm kinda sad... not for the money, but for the bad command that completely destroys a device in seconds... and right, for the money aswell...
Small update: I got the box yesterday and sent it back, then got an email this morning saying Motorola received it. Hopefully the whole process will go this fast.
They gave me a tracking number and a site to check to see how things are going, so that's more info than I was expecting. They haven't asked any questions yet, so that's also good.

[Q] ADB Reboot to bootloader only rebooting to OS

I've been trying to flash a new kernal on my (rooted) Kacaso M766 and there really isn't much support for it anywhere.
Nevertheless, I have (as far as I know) successfully installed adb. Everything appears fine in adb, at least. Using the "devices" command shows the tablet, back up works, resetting adb with the root permission command works, and I was able to create a debug dump, but when I use the reboot to bootloader command, my tablet reboots to the OS still.
Any ideas of what could be wrong?
I can't get to the bootloader via button combinations, but I've figured out how to get to Fastboot and Recovery with button combinations and even safe mode, but none of them bring up the bootloader screen. There are only three buttons but like I said, little to no support for this manufacture so it might be some strange button combo for all I know.
Also when I go into fastboot then plug in a USB the tablet shows up as WM8950. Any idea what drivers would I use?
Any help would be welcome. :good:

[Q] ADB stops recognising device

Hi,
I'm trying to sideload the final 5.0 build to my Nexus 5.
The ADB drivers are installed. This command prompt is opened in the desktop. I manage to get to the point in Recovery Mode where I need to flash the 'update.zip' (which I have named exactly that and this happens.
Anyone help me please?
Thanks beforehand.
I'm not a regular here, if I have broken the rules, please let a moderator know and sort me out. If this is an illegal thread, please delete it. Apologies.
ibz100 said:
Hi,
I'm trying to sideload the final 5.0 build to my Nexus 5.
The ADB drivers are installed. This command prompt is opened in the desktop. I manage to get to the point in Recovery Mode where I need to flash the 'update.zip' (which I have named exactly that and this happens.
Anyone help me please?
Thanks beforehand.
I'm not a regular here, if I have broken the rules, please let a moderator know and sort me out. If this is an illegal thread, please delete it. Apologies.
Click to expand...
Click to collapse
Your usb drivers are not installed correctly, reinstall the drivers and enable usb debugging in developer options. Check if you succeeded by typing in cmd (while the phone is in fastboot): fastboot devices. You should see a serialnumber if all went well.
Hi, @ibz100. It actually looks like your drivers are installed properly. At least your ADB drivers. You only use ADB while booted into the android OS, or from recovery. However, while you're booted into the bootloader (also known as fastboot mode) you'll want to use "fastboot" commands.
So boot back into the bootloader either the same way using ADB while booted into the OS, or from a powered down state hold Volume down(-) & Power keys. You can also use both volume keys + power to access the Nexus 5's secondary bootloader.
Once in fastboot mode, run the command
Code:
fastboot devices
If your serial number appears like it did for ADB devices, then your fastboot drivers are successfully installed. If not, then we need to get your fastboot drivers set up.
Read here if you need to install them. Feel free to reply here if you're having trouble installing them and I can help you through that as well.
Also useful: http://forum.xda-developers.com/google-nexus-5/general/noob-read-adb-fastboot-how-hep-t2807273
If your drivers are properly installed, run the command "fastboot" without quotations to see a list of available commands to be used in fastboot. If you're still not sure what to do, just ask.
If you want to use ADB to apply the update.zip, boot into recovery mode (I'm going to assume you're using a stock recovery). Use the commands I mentioned above to get to the bootloader. Now use the volume keys to navigate from "Start" to "Recovery Mode" With Recovery selected, key the Power button. You should see a picture of an android with an exclamation mark with the text "No Command". From there hold down the Power button and tap Volume UP(+) once. This will boot you into stock recovery mode. From there use the volume keys to navigate to "Apply update from ADB". Power key to select.
Check out the Roll-up sticky guide by @rootSU for all the information you need to get yourself up and running.
http://forum.xda-developers.com/goo...urce-guides-info-threads-linked-read-t2784527
Again, if you need any more help just reply and let me know, I'm more than happy to help.
Try loading koush's universal adb drivers I was having the same problem but this solved it for me. Sidelosd worked a treat and running lollipop without problems so far...
Thabk you everybody, I'll try your recommended (re)installation of my fastboot drivers later and get back to you if I have any further updates on my situation.
Big thanks for all the replies guys, I really was taken aback by the sheer effort you put into helping people around here. Rest assured that it doesn't go unappreciated. Keep up the good work!
ibz100 said:
Thabk you everybody, I'll try your recommended (re)installation of my fastboot drivers later and get back to you if I have any further updates on my situation.
Big thanks for all the replies guys, I really was taken aback by the sheer effort you put into helping people around here. Rest assured that it doesn't go unappreciated. Keep up the good work!
Click to expand...
Click to collapse
Well I've had my fair share of driver issues. I blame my PC. Anyways, I know how frustrating it can be.
However going back to what I said before, since your ADB drivers are properly installed (being as your device ID showed up and reboot bootloader worked) I wouldn't think it's too far fetched that you already have fastboot drivers installed. Before you try deleting/reinstalling them, I would first boot into the bootloader and run the command "fastboot devices" (no quotes). If you device ID shows up in fastboot, there's no need to mess with your drivers.
Again, the reason ADB "stopped recognizing your device" is because you booted into fastboot mode. While you're in fastboot, you need fastboot commands.
If you boot back into the OS, or into recovery, ADB will recognize your device again. That's how it's supposed to be.
So power down the phone. Hold Volume Down(-) & Power until the phone boots into the bootloader and type;
Code:
fastboot devices
If your ID shows up in a similar fashion to the way it did in your screenshot, you're golden. Let us know how it goes! :good:

[Q] Phone stuck, can't boot

My phone is stuck at the boot logo, and won't fully boot. The boot with the volume down button pressed doesn't work, or even the volume up thing, in order to enter fastboot I need to let it boot up to the logo then run the
Code:
adb reboot-bootloader
command. when i try the
Code:
adb reboot recovery
command, it boots to the oneplus logo, then reboots normally, and I am back to where I was. I cannot flash a new image, because my bootloader is locked, and in order to unlock it, the phone needs to boot up. Is there a way to unlock the bootloader without a full boot? Can I flash without an unlocked bootloader? Is it bricked? please, any feedback would be appreciated.
Beast_Boy said:
My phone is stuck at the boot logo, and won't fully boot. The boot with the volume down button pressed doesn't work, or even the volume up thing, in order to enter fastboot I need to let it boot up to the logo then run the
Code:
adb reboot-bootloader
command. when i try the
Code:
adb reboot recovery
command, it boots to the oneplus logo, then reboots normally, and I am back to where I was. I cannot flash a new image, because my bootloader is locked, and in order to unlock it, the phone needs to boot up. Is there a way to unlock the bootloader without a full boot? Can I flash without an unlocked bootloader? Is it bricked? please, any feedback would be appreciated.
Click to expand...
Click to collapse
So you can't boot into fastboot with the power + volume up button combo after shutting the phone down (hold power)? No you can't unlock bootloader without successfully booting into fastboot. No you can't flash without unlocking the bootloader.
Heisenberg said:
So you can't boot into fastboot with the power + volume up button combo after shutting the phone down (hold power)? No you can't unlock bootloader without successfully booting into fastboot. No you can't flash without unlocking the bootloader.
Click to expand...
Click to collapse
i can only turn the phone on in the normal mode. does this mean it's bricked? do I have to send it in?
Beast_Boy said:
i can only turn the phone on in the normal mode. does this mean it's bricked? do I have to send it in?
Click to expand...
Click to collapse
I would think it's bricked, it's virtually impossible to brick this device. So it'll turn on when the power button is pressed, but it won't actually boot, right? Nothing at all happens when using the fastboot button combo? A little background info would be good, what lead to this situation?
Heisenberg said:
I would think it's bricked, it's virtually impossible to brick this device. So it'll turn on when the power button is pressed, but it won't actually boot, right? Nothing at all happens when using the fastboot button combo? A little background info would be good, what lead to this situation?
Click to expand...
Click to collapse
The button combos do nothing, not even boot the device normally.
So, what happened is this: I was trying to root my phone, I plugged it into a windows 8.1 machine, and I was following a tutorial by C4Etech. It was working fine, until I unlocked the bootloader, after the it was unlocked, my machine could no longer recognize my device. I uninstalled and reinstalled countless drivers multiple times in an attempt make my machine recognize my device, rebooted my phone, my computer., the adb server, and anyhting else I could. Nothing worked. Angry and frustrated, I plugged it into my Linux Mint machine, and it recognized perfectly! because I am a noob, and have never done anything like this before, I began to panic when I saw that my phone wouldn't reboot like they did in the tutorials right after they unlocked the bootloader, so I skipped that part, and continued with the flashing. after flashing, my phone would no longer boot, so I thought I messed up with the unlocking portion because my phone wouldn't reboot after the "fastboot oem unlock" ( because I am a noob, I thought that the unlock was temporary, and that my many reboots of the phone managed to undo it.). thinking the unlock was the culprit to my broken phone, and thought adb must be glitched since it doesn't reboot after "fastboot oem unlock" like it did in the tutorials, like a genius, i typed in "fastboot oem lock" rebooted into fastmode, then typed in "fastboot oem unlock". I was filled with joy when I saw my phone reboot like it did in the tutorials, but my joy began to fade, as the phone was still booting after several minutes. And thats when I died inside, and began posting on many online forums, because google couldn't find anything that matched my situation.
the button combos stopped working after the flash.
Beast_Boy said:
The button combos do nothing, not even boot the device normally.
So, what happened is this: I was trying to root my phone, I plugged it into a windows 8.1 machine, and I was following a tutorial by C4Etech. It was working fine, until I unlocked the bootloader, after the it was unlocked, my machine could no longer recognize my device. I uninstalled and reinstalled countless drivers multiple times in an attempt make my machine recognize my device, rebooted my phone, my computer., the adb server, and anyhting else I could. Nothing worked. Angry and frustrated, I plugged it into my Linux Mint machine, and it recognized perfectly! because I am a noob, and have never done anything like this before, I began to panic when I saw that my phone wouldn't reboot like they did in the tutorials right after they unlocked the bootloader, so I skipped that part, and continued with the flashing. after flashing, my phone would no longer boot, so I thought I messed up with the unlocking portion because my phone wouldn't reboot after the "fastboot oem unlock" ( because I am a noob, I thought that the unlock was temporary, and that my many reboots of the phone managed to undo it.). thinking the unlock was the culprit to my broken phone, and thought adb must be glitched since it doesn't reboot after "fastboot oem unlock" like it did in the tutorials, like a genius, i typed in "fastboot oem lock" rebooted into fastmode, then typed in "fastboot oem unlock". I was filled with joy when I saw my phone reboot like it did in the tutorials, but my joy began to fade, as the phone was still booting after several minutes. And thats when I died inside, and began posting on many online forums, because google couldn't find anything that matched my situation.
the button combos stopped working after the flash.
Click to expand...
Click to collapse
Have you seen this?
http://forum.xda-developers.com/oneplus-one/help/guide-unbrick-oneplus-one-t3013732
Might be worth a try.

Help unlocking/rooting Lenovo Vibe C2 K10a40

So guys, the thing is: I haven't found a way to root nor to unlock the bootloader in this phone.
Focusing on the bootloader, there is an option in the Developer options which says "OEM unlocking", that supposedly allows the bootloader to be unlocked. Plugging the phone on the pc USB and using adb to get into fastboot works fine, but after typing "fastboot flashing unlock" the command prompt keeps on waiting with "..." for the next phone's action, that's where the problem begins: on the cellphone screen, right after the warnings about the consequences of unlocking the bootloader, appears: "Press the Volume UP/Down buttons to select Yes or No." If Volume_Down is pressed, it returns to fastboot, but if Volume_UP is pressed nothing happens, literally nothing, Power button also does nothing, the only one who works is Volume_Down, making it unable to unlock the bootloader via this method.
I tried to use "adb shell input keyevent 24" (knowing it wouldn't work) to try to send the Volume_Up command from the pc.
So I wanna know if there is a way that, through that fastboot waiting instance (the three dots "..."), I can send the Volume_Up command from the pc, enabling the Bootloader to be unlocked, making the root easy or even possible.
Thanks in advance!
Matt1355 said:
So guys, the thing is: I haven't found a way to root nor to unlock the bootloader in this phone.
Focusing on the bootloader, there is an option in the Developer options which says "OEM unlocking", that supposedly allows the bootloader to be unlocked. Plugging the phone on the pc USB and using adb to get into fastboot works fine, but after typing "fastboot flashing unlock" the command prompt keeps on waiting with "..." for the next phone's action, that's where the problem begins: on the cellphone screen, right after the warnings about the consequences of unlocking the bootloader, appears: "Press the Volume UP/Down buttons to select Yes or No." If Volume_Down is pressed, it returns to fastboot, but if Volume_UP is pressed nothing happens, literally nothing, Power button also does nothing, the only one who works is Volume_Down, making it unable to unlock the bootloader via this method.
I tried to use "adb shell input keyevent 24" (knowing it wouldn't work) to try to send the Volume_Up command from the pc.
So I wanna know if there is a way that, through that fastboot waiting instance (the three dots "..."), I can send the Volume_Up command from the pc, enabling the Bootloader to be unlocked, making the root easy or even possible.
Thanks in advance!
Click to expand...
Click to collapse
Just because you have the "OEM unlock" option in settings doesn't necessarily mean you can unlock bootloader, the manufacturer or your carrier may have disabled that option in fastboot. Not all devices can be unlocked.
Sent from my SM-S903VL using Tapatalk
still waiting for rooting app, too...
Why God! Why??!! Why Google & Lenovo d'nt just make possible 4 rooting?
Kirzoczek said:
Why Godzin why??!! Why Google d'nt just make possible 4 rooting?
Click to expand...
Click to collapse
Well i'm pissed of. Lenovo just turn off vol up button. U just can't press it in fastboot mode to unlock bootloader. F...... ?
Kirzoczek said:
Why God! Why??!! Why Google & Lenovo d'nt just make possible 4 rooting?
Click to expand...
Click to collapse
Google isn't the the one that has control of that, that's controlled by the device manufacturers and/or each mobile carrier. In this case, it's controlled by Lenovo
The only devices that Google has control over whether they're rootable or not is only the Nexus and Pixel devices, not any of the others.
I DO NOT PROVIDE HELP IN PERSONAL MESSAGE, I DO NOT TAKE REQUESTS IN PERSONAL MESSAGE, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
---------- Post added at 04:01 PM ---------- Previous post was at 03:47 PM ----------
Matt1355 said:
So guys, the thing is: I haven't found a way to root nor to unlock the bootloader in this phone.
Focusing on the bootloader, there is an option in the Developer options which says "OEM unlocking", that supposedly allows the bootloader to be unlocked. Plugging the phone on the pc USB and using adb to get into fastboot works fine, but after typing "fastboot flashing unlock" the command prompt keeps on waiting with "..." for the next phone's action, that's where the problem begins: on the cellphone screen, right after the warnings about the consequences of unlocking the bootloader, appears: "Press the Volume UP/Down buttons to select Yes or No." If Volume_Down is pressed, it returns to fastboot, but if Volume_UP is pressed nothing happens, literally nothing, Power button also does nothing, the only one who works is Volume_Down, making it unable to unlock the bootloader via this method.
I tried to use "adb shell input keyevent 24" (knowing it wouldn't work) to try to send the Volume_Up command from the pc.
So I wanna know if there is a way that, through that fastboot waiting instance (the three dots "..."), I can send the Volume_Up command from the pc, enabling the Bootloader to be unlocked, making the root easy or even possible.
Thanks in advance!
Click to expand...
Click to collapse
The command is supposed to be
fastboot OEM unlock
I DO NOT PROVIDE HELP IN PERSONAL MESSAGE, I DO NOT TAKE REQUESTS IN PERSONAL MESSAGE, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Yes, you have right. But what with this vol+ button?
Volume+ button is not working on Lenovo C2 ?
GPSSlovakia said:
Volume+ button is not working on Lenovo C2 ?
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I mean that vol up did' t work in fastboot mode. When u try to unblock bootloader u have two options. U may choose yes or no. Offously vol up is for "yes" answer. And whoop!!! It don't work
How to restore the imei number of this phone ..i tried several methods to restore..pls help me
rijukrishnan said:
How to restore the imei number of this phone ..i tried several methods to restore..pls help me
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If you didn't make an IMEI backup then we can't discuss restoring your IMEI at XDA, it's in the Forum Rules.
Sent from my SM-S903VL using Tapatalk
then what can i do next to make it in stock condetion
What is this message means
rijukrishnan said:
What is this message means
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I think it is saying that the connection between PC and your device was interrupted for some reason. I was probably a problem with your cable being loose and losing connection where it plugs into your device.
It is not very likely but it could also be an unstable electrical supply grid in your area, the power in the building where you are could have dropped momentarily, I doubt this was the cause though, but it is one possibility.
Use a different cable or find a way to make sure it connects and stays connected, then try flashing again.
The error you have is described in the attachment below, it explains how to solve.
For future reference, the link below has a list of all flash tool errors and how to solve them.
https://forum.hovatek.com/thread-439.html
Sent from my SM-S903VL using Tapatalk
Droidriven said:
If you didn't make an IMEI backup then we can't discuss restoring your IMEI at XDA, it's in the Forum Rules.
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i have a bckup of imei number
Eh..,,.... no unlock oem ... no root , bad phone
Droidriven said:
Just because you have the "OEM unlock" option in settings doesn't necessarily mean you can unlock bootloader, the manufacturer or your carrier may have disabled that option in fastboot. Not all devices can be unlocked.
Sent from my SM-S903VL using Tapatalk
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You can access the recovery for this model after you send the command (ADB and fastboot commands): "Adb reboot recovery" where "Adb reboot boot loader" and then you have to click on the volume up and the power button at the same time and its success
* But the problem is that I have not found the trwp compatible with this model to make the root that can help us
medzbody said:
You can access the recovery for this model after you send the command (ADB and fastboot commands): "Adb reboot recovery" where "Adb reboot boot loader" and then you have to click on the volume up and the power button at the same time and its success
* But the problem is that I have not found the trwp compatible with this model to make the root that can help us
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Click to collapse
TWRP for your device probably doesn't exist, you'll have to wait for someone to be interested in building TWRP for your model (not likely to happen if it hasn't already) or you can port or build your own TWRP.
Sent from my SM-S903VL using Tapatalk
Droidriven said:
TWRP for your device probably doesn't exist, you'll have to wait for someone to be interested in building TWRP for your model (not likely to happen if it hasn't already) or you can port or build your own TWRP.
Sent from my SM-S903VL using Tapatalk
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I do not know how to build twrp for my device you can help me
What about making a TWRP and then flashing it thru modified scatter file in flash tool

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