How to unlock bootloader of zenpad 7 z370cg (P01V) ? - Android Q&A, Help & Troubleshooting

Good day!
Im trying to unlock bootloader to root the tab. Generally, i have followed a guide in a thread posted in this site (rooting zenpad c7 z170c) which was claimed to work with z370 by some. There were no problems encountered when using the method except when im already in fastboot, commands i enter like "fastboot oem unlock" return a "failure unknown command " from the prompt. I tried another command "fastboot flashing unlock" but the prompt returned "failure remote failure".
After that, i tried using "fastboot getvar all" and showed that bootloader is secured and still locked. I even tried "fastboot boot [root image name].img" but would cause an error since device is still locked.
I used win7 while doing this and got the adb installer 1.4.3 from a thread here.
All help is greatly appreciated.thanks

Hello Friend! I also problema? yourself have solved? can you help me?
Inviato dal mio ASUS_Z00A utilizzando Tapatalk

Check out what worked for me!
alexjesse said:
Good day!
Im trying to unlock bootloader to root the tab. Generally, i have followed a guide in a thread posted in this site (rooting zenpad c7 z170c) which was claimed to work with z370 by some. There were no problems encountered when using the method except when im already in fastboot, commands i enter like "fastboot oem unlock" return a "failure unknown command " from the prompt. I tried another command "fastboot flashing unlock" but the prompt returned "failure remote failure".
After that, i tried using "fastboot getvar all" and showed that bootloader is secured and still locked. I even tried "fastboot boot [root image name].img" but would cause an error since device is still locked.
I used win7 while doing this and got the adb installer 1.4.3 from a thread here.
All help is greatly appreciated.thanks
Click to expand...
Click to collapse
In this LINK: http://forum.xda-developers.com/and...-c-7-0-z170c-p01z-root-method-t3311752/page21
---------- Post added at 10:34 AM ---------- Previous post was at 10:32 AM ----------
... even though my experience (in:http://forum.xda-developers.com/and...-c-7-0-z170c-p01z-root-method-t3311752/page21 ) of not having to lose my data, apps and settings was a BONUS, do BACK UP your data, in case something different turns up for you.
good luck!!!

Related

fastboot oem unlock returns nothing for Panasonic T40 in Windows

I want to unlock my phone for installing a ROM and I have setup the Android SDK alongwith all the drivers USB debugging ON, but 'fastboot oem unlock' is resulting in three dots (...) nothing else. Phone keeps displaying the '=>Fastboot mode' text. 'fastboot-windows oem unlock' results as command not recognized. 'adb devices' and 'fastboot devices' both successfully give the serial numbers. 'fastboot oem device-info', 'fastboot flashing get_unlock_ability', 'fastboot flashing unlock' all these also result in three dots (without the text of <waiting for device>).
'flashall' without unlocking failed.
I have also finished trying 3 different data cables with 4 computers. I don't have any linux around me, only Windows 7, 8 and 8.1. Also tried with root and without root (Rooted the phone with Kingo) and tried to run all the commands from the SDK folder as well as administrator.
Please help me with unlocking the oem.
General info: the phone is having Android 4.4.2. Willing to install android 5.1.1.
I have the same problem! Please help
Can you see Written fastboot in fastboot mode?
sent from moto g2014 with cm13
AshwinBhosle said:
I want to unlock my phone for installing a ROM and I have setup the Android SDK alongwith all the drivers USB debugging ON, but 'fastboot oem unlock' is resulting in three dots (...) nothing else. Phone keeps displaying the '=>Fastboot mode' text. 'fastboot-windows oem unlock' results as command not recognized. 'adb devices' and 'fastboot devices' both successfully give the serial numbers. 'fastboot oem device-info', 'fastboot flashing get_unlock_ability', 'fastboot flashing unlock' all these also result in three dots (without the text of <waiting for device>).
'flashall' without unlocking failed.
I have also finished trying 3 different data cables with 4 computers. I don't have any linux around me, only Windows 7, 8 and 8.1. Also tried with root and without root (Rooted the phone with Kingo) and tried to run all the commands from the SDK folder as well as administrator.
Please help me with unlocking the oem.
General info: the phone is having Android 4.4.2. Willing to install android 5.1.1.
Click to expand...
Click to collapse
A lot of phones have a code you need to enter along with the fastboot command to unlock. Check manufacturer's website.
Moto phones, several lenovo phones, etc.
---------- Post added at 08:34 AM ---------- Previous post was at 08:33 AM ----------
neeraj.lambaa said:
Can you see Written fastboot in fastboot mode?
sent from moto g2014 with cm13
Click to expand...
Click to collapse
Not all phones show that. Some phones just show the device logo splash screen.
dev.kasibhatla said:
A lot of phones have a code you need to enter along with the fastboot command to unlock. Check manufacturer's website.
Moto phones, several lenovo phones, etc.
---------- Post added at 08:34 AM ---------- Previous post was at 08:33 AM ----------
Not all phones show that. Some phones just show the device logo splash screen.[/QUOTE
Hey Do You Have Custom ROM?
Click to expand...
Click to collapse
KickAss101 said:
dev.kasibhatla said:
A lot of phones have a code you need to enter along with the fastboot command to unlock. Check manufacturer's website.
Moto phones, several lenovo phones, etc.
---------- Post added at 08:34 AM ---------- Previous post was at 08:33 AM ----------
Not all phones show that. Some phones just show the device logo splash screen.[/QUOTE
Hey Do You Have Custom ROM?
Click to expand...
Click to collapse
I'm sorry I don't own that phone. But I've built lineage ROMS for Lenovo zuk z2 plus.
Click to expand...
Click to collapse

How to unlock bootloader for LYF Flame-1 (LS-4503)

Hi guys!
does anyone knows how to unlock bootloader for lyf flame 1.
I have tried many methods but didn't work
I have tried getting into fast boot and typing "fastboot oem unlock" I am getting "FAILED <remote: unknown command>"
but nothing works.
i have tried using different tools (all in one tools, unlock my bootloader and many) but nothing works
it has been very hard to root my mobile as there is no full rooted script for my mobile and I have many tools to root my mobile(iroot,vroot,mobogenie,unlockroot,safe root,kingoroot,king root,mobile go,zroot,poot,etc) but kingroot has worked but not giving full permission. i cant give shell commands.
please help me to unlock my bootloader
my phone:LYF Flame-1 (LS-4503) running 5.1.1
kvbkiran said:
Hi guys!
does anyone knows how to unlock bootloader for lyf flame 1.
I have tried many methods but didn't work
I have tried getting into fast boot and typing "fastboot oem unlock" I am getting "FAILED <remote: unknown command>"
but nothing works.
i have tried using different tools (all in one tools, unlock my bootloader and many) but nothing works
it has been very hard to root my mobile as there is no full rooted script for my mobile and I have many tools to root my mobile(iroot,vroot,mobogenie,unlockroot,safe root,kingoroot,king root,mobile go,zroot,poot,etc) but kingroot has worked but not giving full permission. i cant give shell commands.
please help me to unlock my bootloader
my phone:LYF Flame-1 (LS-4503) running 5.1.1
Click to expand...
Click to collapse
If your android rooted using KingRoot then it must your bootloader is unlocked.
Try command in fastboot mode
"fastboot oem device-info" then see bootloader unlocked is true or false. If true means your bootloader is unlocked.
What ever i am typing its saying only "FAILED <remote: unknown command>"
Only the working code is "fastboot devices" 😥
kvbkiran said:
What ever i am typing its saying only "FAILED <remote: unknown command>"
Only the working code is "fastboot devices" 😥
Click to expand...
Click to collapse
Is your android detect in fastboot mode. When you run command fastboot devices then device shows their serial number.
yes it is showing my device with some serial key
is anytihng possible with download mode
Please anyone help me to unlock bootloader
please can anyone reply me
kvbkiran said:
please can anyone reply me
Click to expand...
Click to collapse
Have you enabled oem unlock option in developer setting.
yeah i did it but nothing happens
kvbkiran said:
yeah i did it but nothing happens
Click to expand...
Click to collapse
It may be because your android secure with FRP protection. Try Merapitool to remove FRP protection from your android.
there is nothing like that i have already bypassed frp
i have my resetted gmail account and also i have succesfully using my mobile
and i dont think removing frp will helps in unlocking bootloader
please help me i cant able to do anything from the bootloader
fastboot is detecting but cant able to execute any commands
Buddy may be ur boot.img needs to be modified root device using this . Toolkit
https://forum.xda-developers.com/android/general/how-to-rooting-guide-lyf-water-1-ls-5002-t3563825
Its a fastboot based if this works then other commands will start working
this is for LYF water
will it works me ?
please reply me
still i tried but still same problem
getting failed <remote: unknown command>
Can u send Boot.img
?
Also make sure usb debugging is enabled and drivers are installed for ur device .
please reply quick. Send me ur boot.img
Yes i have enabled the usb debugging and installed the perfect drivers for my phone
i have just extracted the boot.img from the flash file
https://drive.google.com/open?id=0B5f1QUUHbjhccjMzWHN3ZFNVVW8
Flame 1 and flame 8 these both devices have fastboot problems these devices never boot in fastboot properly. They just stuck at "power by android" screen when given command "reboot bootloder" or maually from recovery "reboot to bootloader"
Hey xda plz help me how to unlock bootloader for Lenovo a3300-hv plz help running ROM 4.4.2

Touchscreen unresponsive after "fastboot oem unlock" (Lenovo Tab3 10 Business)

Touchscreen unresponsive after "fastboot oem unlock" (Lenovo Tab3 10 Business)
Hi there,
I just got a TAB3 10 Business - Type ZA0X - Model ZA0X0125SE, 32 GB.
I thought it would be nice to root it and be able to boot TWRP, so I first tried to unlock the bootloader.
I booted into fastboot and from the ADB and Fastboot SDK Platform-Tools I ran this command:
- "fastboot oem unlock" : that appeared to be succesfull and ended in "OK"
- then with "fastboot boot twrp.img" (the img file I found here: https://www.androidfilehost.com/?fid=457095661767138880 I booted into TWRP but found out the touch screen did not work
- then I booted into normal mode, the tablet was reset to factory settings and I ended in the setup screen of Android: "Choose language".
But I can not choose a language as the touchscreen is not working.
Can anybody understand how the oem unlock command has resulted in an unresponsive touch screen?
And any idea how I can solve this?
Thanks!
Actually it was not the "fastboot oem unlock" command that caused the issue, but the "fastboot boot twrp.img" after that.
Although my firmware had a different type of version number (TB3-X70F_S000004_161208_ROW_P), I decided to flash the device with the SP Flash Tool and the "TB3-X70F_S000025_160527_ROW" firmware that I found here: https://www.androidfilehost.com/?fid=673368273298936487. Thanks Tzul !!
After flashing this firmware, unlocking the bootloader, flashing TWRP and installing SU (to get root access) went smoothly.
After an OTA update to S000026 (TB3-X70F_S000026_170208_ROW, I had to install TWRP and SU again, but everything seems to work fine now
Apparently my original firmware version did not work well in combination with the TWRP version from Tzul.
Do you have firmware file left? I can't download it, stuck on "Searching for mirrors..."
---------- Post added at 11:40 AM ---------- Previous post was at 11:31 AM ----------
voidwarp said:
Do you have firmware file left? I can't download it, stuck on "Searching for mirrors..."
Click to expand...
Click to collapse
nvm, tried after some time, it got fixed somehow

[Help] ZTE Avid 557 (7.1.1) Root?

Hi everyone,
I've searched a lot, but haven't found anything. I'm afraid my phone can't be rooted by Magisk because the bootloader is locked. Hopefully someone will tell me I'm wrong?
I followed a fastboot guide (enable OEM unlock, USB debug) and was attempting the command prompts via ADB fastboot folder.
"adb devices" shows me my device ID, however the next step - "adb reboot bootloader" - just reboots. And the following step ("fastboot devices") yields nothing.
From what I can tell, my phone has a locked bootloader and there's no way to unlock it. This is why the ADB fastboot command doesn't work for me.
Furthermore, there's no way to install Magisk without this function. I read something about downloading the original firmware for my phone, but I haven't found the firmware anywhere online.
Appreciate any help you guys can offer. Thank you!
Eric
Bump - please anyone / any ideas?

[ZTE K87CA] can't unlock bootloader

I got to the fastboot screen on my ZTE K87CA tablet, but when I try to type the command "fastboot flashing unlock" or "fastboot oem unlock", it just shows "waiting for devices". I have searched quite a bit over the web but I have not found a post where someone actually was able to unlock the bootloader on this device.
This is my first time rooting a device
I am trying to find ways to speed up this tablet and free up ram and stuff and rooting the device seemed to be necessary.
If you have answers to my problem please say so.
Coke3 said:
I got to the fastboot screen on my ZTE K87CA tablet, but when I try to type the command "fastboot flashing unlock" or "fastboot oem unlock", it just shows "waiting for devices". I have searched quite a bit over the web but I have not found a post where someone actually was able to unlock the bootloader on this device.
This is my first time rooting a device
I am trying to find ways to speed up this tablet and free up ram and stuff and rooting the device seemed to be necessary.
If you have answers to my problem please say so.
Click to expand...
Click to collapse
Have you enabled OEM unlock in stock rom developer options first with stock rom booted?
Also when device is in bootloader type fastboot devices to see if it is registering your device. If it isn't try getting latest fastboot tools from Android sdk and turning off secure boot if you are on windows 11.
toolhas4degrees said:
Have you enabled OEM unlock in stock rom developer options first with stock rom booted?
Also when device is in bootloader type fastboot devices to see if it is registering your device. If it isn't try getting latest fastboot tools from Android sdk and turning off secure boot if you are on windows 11.
Click to expand...
Click to collapse
I did all the developer settings like usb debugging and and oem unlock.
When the tablet was on normally running, I did "adb devices" and it showed my tablet, but when it was in fastboot mode I did "fastbook devices" and it didn't show anything.
I think I might have thought of something though. When I downloaded the the usb drivers or something; I downloaded the K87CC instead of the K87CA because I couldn't find one for it so that might be the problem
Look into turning off secure boot if using windows 11, and download latest fastboot sdk package
I'm kind of new to this and don't really know where to download all this stuff. could you send me a link?
Not sure if this is the right place to ask this question, but, have you had any chance to find and install any custom rom in ZTE K87CA? My tablet has become extremely slow and I would like to install something lighter.
thanks.

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