[SOLVED] Lenovo VIBE K5 A6020a41 Bootloader refuses to unlock - General Questions and Answers

EDIT:
fastboot boot and fastboot flash WORK even though
fastboot oem device-info shows thebootloader is NOT UNLOCKED.
If that still doesn't work try to flash some other compatible stock rom for your model with qfil and try the fastboot boot and fastboot flash commands again, don't care about unlock status, it worked for me successfully flashed twrp and a custom rom.
Hello!
My Lenovo VIBE K5 A6020a41 refuses to unlock its bootloader.
Output of fastboot oem unlock:
FAILED (remote: 'oem unlock is not allowed')
I have enabled developer settings, usb debugging and Unlock OEM setting.
I found some posts of people with the same issue and smartphone model and they said they fixed it by flashing another stock rom (they didn't specify which).
I have flashed two or three other stock ROMs with QFIL, one was for A6020a40 model and the other two were for my A6020a41 model.
Again, I enabled all the necessary settings and still couldn't unlock my bootloader, showed the same error.
Then I tried flashing TWRP through QFIL, but when I rebooted into it, Lenovo logo showed for a second and then a black screen forever, I also tried to see if adb was able to detect it as a device in recovery, but it didn't.
Then I managed to root it with KingoRoot(I know it is not secure and it is bad and all, but I just want to flash a custom rom anyway), so I installed the official TWRP app and an app called Flashify, both flashed TWRP successfully, but I couldn't boot into the TWRP again, Lenovo logo for a second and a black screen.
Do You have any suggestions please?
Thank You.

Try
Code:
fastboot flashing unlock
what is the appropriate command on newer devices.

jwoegerbauer said:
Try
Code:
fastboot flashing unlock
what is the appropriate command on newer devices.
Click to expand...
Click to collapse
Already did. This device supports the older one only. (Should support)

Hint: Add " Lenovo VIBE K5 A6020a41 " to front of this thread's title.

Related

Can you please help me unlock OEM on Yu Yuphoria 5010A with android OS.

Hi ,
I have recently purchased a Yu Yuphoria 5010A. I thought it had cyanogen mod but found to have just Android OS.
I have searched this forum for unlocking OEM and installing recovery to install cyanogen mod. I activated allow oem unlock in developers options and then tried to unlock via fastboot . fastboot detects the device but I am unable to unlock oem as it says "remote : oem unlock not allowed " . I was able to temporary boot into cwm recovery using "fastbbot 0x2A96 boot recovery.img" but it was not able to further install the mod.
Can you help with unlock the oem and install cyanogen mod. coz all the steps mentioned in this site and others have failed.
Thank you
Hii I also bought same model and also want cynogenmod os. But I don't know if its possible to flash cynogen os . but I rooted my phone an d its working perfectly. I had same problem of can't open bootloder not allowed to open bootloader. I checked the allow to open OEM in developer option. I guess this model has already unlocked bootloader cause I just rooted it even when it said can't unlock bootloader. You can try it but download stock ROM before if anything goes wrong. And please tell me if I can flash cynogen mod is it safe
shreyash11 said:
Hii I also bought same model and also want cynogenmod os. But I don't know if its possible to flash cynogen os . but I rooted my phone an d its working perfectly. I had same problem of can't open bootloder not allowed to open bootloader. I checked the allow to open OEM in developer option. I guess this model has already unlocked bootloader cause I just rooted it even when it said can't unlock bootloader. You can try it but download stock ROM before if anything goes wrong. And please tell me if I can flash cynogen mod is it safe
Click to expand...
Click to collapse
How you rooted it bro without unlocking the bootloader am also having the issue with oem unlocking
abees said:
How you rooted it bro without unlocking the bootloader am also having the issue with oem unlocking
Click to expand...
Click to collapse
As I said I think the bootloader in y5010A is already unlocked. I have a rooting guide I can upload it if anyone want. You just have to check the allow OEM unlocking in developer option
Guys, please take a look: http://forum.xda-developers.com/yu-yuphoria/help/guide-unlock-bootloader-yu-yuphoria-t3365251
Titokhan said:
Guys, please take a look: http://forum.xda-developers.com/yu-yuphoria/help/guide-unlock-bootloader-yu-yuphoria-t3365251
Click to expand...
Click to collapse
Thanx..but can I flash cynogen is on y5010A.
fastboot model : fastboot oem unlock
shreyash11 said:
Thanx..but can I flash cynogen is on y5010A.
Click to expand...
Click to collapse
you can flash cyanogenmod.. am using it....
Sent from my Hot Tempered Yuphoria
hi all!
when i write fastboot -i 0x2A96 oem unlock, it shows okay finished only. and the device is not unlocked. please help!
coolakash said:
Hi ,
I have recently purchased a Yu Yuphoria 5010A. I thought it had cyanogen mod but found to have just OS.
I have searched this forum for unlocking OEM and installing recovery to install cyanogen mod. I activated allow oem in options and then tried to via fastboot . fastboot detects the device but I am unable to oem as it says "remote : oem not allowed " . I was able to temporary boot into cwm recovery using "fastbbot 0x2A96 boot recovery.img" but it was not able to further install the mod.
Can you help with the oem and install cyanogen mod. coz all the steps mentioned in this site and others have failed.
Thank you
Click to expand...
Click to collapse
download kingroot.apk and then open it( it will unlock bootloader )
and then ownload root checker basic.apk (it will verify the root access )
and then download flashify.apk (it help you to flash twrp)
coolakash said:
Hi ,
I have recently purchased a Yu Yuphoria 5010A. I thought it had cyanogen mod but found to have just Android OS.
I have searched this forum for unlocking OEM and installing recovery to install cyanogen mod. I activated allow oem unlock in developers options and then tried to unlock via fastboot . fastboot detects the device but I am unable to unlock oem as it says "remote : oem unlock not allowed " . I was able to temporary boot into cwm recovery using "fastbbot 0x2A96 boot recovery.img" but it was not able to further install the mod.
Can you help with unlock the oem and install cyanogen mod. coz all the steps mentioned in this site and others have failed.
Thank you
Click to expand...
Click to collapse
did u solve it , m also stuck
Arzan03 said:
did u solve it , m also stuck
Click to expand...
Click to collapse
I had directly flashed cm12.1 fastboot file after that i had unlocked my bootloader
Sent from my YU5010 using Tapatalk
Hi guys
I own a YU-phoria YU-5010 which is Non-rooted and is in Boot loop I have tried to flash my device and install twrp but nothing happens Remote OEM is not allowed and I can not access usb debugging or root my phone can any one help?
Bill1303 said:
Hi guys
I own a YU-phoria YU-5010 which is Non-rooted and is in Boot loop I have tried to flash my device and install twrp but nothing happens Remote OEM is not allowed and I can not access usb debugging or root my phone can any one help?
Click to expand...
Click to collapse
Flash stock ROM first version from firmwarefile.com
Then unlock bootloader after that install twrp.
Unable to unlock bootloader
I have YU5010A model. I got stock Android with 5.1 Version. Now i am trying to unlock bootloader. with " fastboot -i 0x2A96 oem unlock" it return with error " remote oem unlock is not allowed". I want to install Custom ROM AOSP v7.1. I am unable to unlock bootloader. I am also tried by Rooting with Kingo root.
Steps : >>Recovery mode(by pressing upvol + powerbutton)
>> Install package from SD Card
>> Return error " No permision" (in root)
It just like messy. I don't know what is TWRP or CWM. Please help me...

oem unlock is not allowed

Hi, I've got the 6045Y model which I've been trying to install twrp on, but I can't unlock the bootloader; it says oem unlock is not allowed.
I've tried on os x and linux with sudo but it's the same on both sides. As my phone isn't carrier locked, I don't understand why it's not allowing me to unlock the bootloader. There's also no oem unlock option in the developer options.
Any help?
You must do something wrong?
Can you trY with Windows
You need Alcatel Drivers+Minimal Adb and Fastboot
connect device you must enable debugging and then
-type "adb reboot-bootloader" to reboot into bootloader. The device should reboot to the screen showing "alcatel onetouch...powered by android". This is bootloader mode.
-Then type "fastboot -i 0x1bbb devices" should show some numbers and "fastboot" after the numbers
-Type "fastboot -i 0x1bbb oem device-info" shows device info including bootloader status (e.g. locked).
-Type "fastboot -i 0x1bbb oem unlock" to unlock the bootloader; after this you should get, for device info,
-Type "fastboot -i 0x1bbb oem device-info" and you should see "Device unlocked: true"
-To reboot normally: "fastboot -i 0x1bbb reboot"
Alek Dev said:
You must do something wrong?
Can you trY with Windows
You need Alcatel Drivers+Minimal Adb and Fastboot
connect device you must enable debugging and then
-type "adb reboot-bootloader" to reboot into bootloader. The device should reboot to the screen showing "alcatel onetouch...powered by android". This is bootloader mode.
-Then type "fastboot -i 0x1bbb devices" should show some numbers and "fastboot" after the numbers
-Type "fastboot -i 0x1bbb oem device-info" shows device info including bootloader status (e.g. locked).
-Type "fastboot -i 0x1bbb oem unlock" to unlock the bootloader; after this you should get, for device info,
-Type "fastboot -i 0x1bbb oem device-info" and you should see "Device unlocked: true"
-To reboot normally: "fastboot -i 0x1bbb reboot"
Click to expand...
Click to collapse
I tried on windows just now and the same thing happened: "FAILED (remote: oem unlock is not allowed)". I should mention though, I flashed twrp before unlocking the bootloader. I wonder if this is what's causing the problem.
I dont remember if this option was there, but you can try. Go into Settings/About Phone, scroll down and click on “build number” continuously until you see a toast notification telling you that you've enabled Developer Options. Go back to your Settings menu and enter Developer Options, scroll down and click on the “Enable OEM Unlock” checkbox, also make sure you enable USB Debugging while you're in the Developer Options menu.
DallasCZ said:
I dont remember if this option was there, but you can try. Go into Settings/About Phone, scroll down and click on “build number” continuously until you see a toast notification telling you that you've enabled Developer Options. Go back to your Settings menu and enter Developer Options, scroll down and click on the “Enable OEM Unlock” checkbox, also make sure you enable USB Debugging while you're in the Developer Options menu.
Click to expand...
Click to collapse
I have the same problem an update was pushed to the UK version last week 6045Y 5.0.2 -010 02 now unable to unlock bootloader i tried everything, so the bootloader must of changed BTW the update was about 458mb.
aradalien said:
I have the same problem an update was pushed to the UK version last week 6045Y 5.0.2 -010 02 now unable to unlock bootloader i tried everything, so the bootloader must of changed BTW the update was about 458mb.
Click to expand...
Click to collapse
same here in the uk have same version and cannot unlock bootloader anyone been sucssesful
aradalien said:
I have the same problem an update was pushed to the UK version last week 6045Y 5.0.2 -010 02 now unable to unlock bootloader i tried everything, so the bootloader must of changed BTW the update was about 458mb.
Click to expand...
Click to collapse
Same problem with same UK model and installed that patch too. I managed to flash TWRP and install PAC ROM still bootloader claims to be locked.
fastboot -i 0x1bbb oem unlock
FAILED (remote: oem unlock is not allowed)
fastboot -i 0x1bbb oem device-info
(bootloader) Device tempered:false
(bootloader) Device Unlock:false
easiest way is to download stock firmware with flsh tool for panasonic eluga switch (rebranded idol3),. Flash it with using the included flash tool. then unlock bootloader. Then use mobile upgrade Q 5.0.6 to go back to stock. And you are on stock uk firmware with unlocked bootloader.
I flashed someone's stock 6045Y(Europe) Firmware: 5.0.2-010 03 but couldn't unlock it either. After that I flashed 6045-i806-DCZ. I was really surpriced it let me do that while claiming to be locked and untempered. After that I did factory reset and flashed PAC-ROM. I'm not sure why should I bother to unlock bootloader if I already have TWRP and PAC-ROM flashed. I've no idea how can I even flash rom's with locked bootloader? Maybe oem device-info is bugged.
Anyways I download panasonic eluga switch firmwire, gonna test it after taking backups.
Reippi said:
I flashed someone's stock 6045Y(Europe) Firmware: 5.0.2-010 03 but couldn't unlock it either. After that I flashed 6045-i806-DCZ. I was really surpriced it let me do that while claiming to be locked and untempered. After that I did factory reset and flashed PAC-ROM. I'm not sure why should I bother to unlock bootloader if I already have TWRP and PAC-ROM flashed. I've no idea how can I even flash rom's with locked bootloader? Maybe oem device-info is bugged.
Anyways I download panasonic eluga switch firmwire, gonna test it after taking backups.
Click to expand...
Click to collapse
the Panasonic firmware flash also the aboot partition which has bootloader unlock enabled. without unlocked bootloader you could end with bricked device and the only solution is mobile upgrade q.
I did as you said and finally got bootloader unlocked, yey! Hopefully I don't have to go thought that process anytime soon. Thanks and thumps up!
Reippi said:
I did as you said and finally got bootloader unlocked, yey! Hopefully I don't have to go thought that process anytime soon. Thanks and thumps up!
Click to expand...
Click to collapse
no, its permanent.
I try to unlock my bootloader but two problems : oem unlock is not allowed and eluga sotware stuck at 2 %!!! I want install MM and I have stock rom can install the same the MM upgrade without unlock the bootloader? Regards
camelotto said:
I try to unlock my bootloader but two problems : oem unlock is not allowed and eluga sotware stuck at 2 %!!! I want install MM and I have stock rom can install the same the MM upgrade without unlock the bootloader? Regards
Click to expand...
Click to collapse
1-You didnt wrote phch model do you have.
2-newer heard of this issue . Install the drivers from the eluga firmware app, reboot, turn off your device, connect device to computer, run the download form the eluga firmware app.
jlocohustler said:
I tried on windows just now and the same thing happened: "FAILED (remote: oem unlock is not allowed)". I should mention though, I flashed twrp before unlocking the bootloader. I wonder if this is what's causing the problem.
Click to expand...
Click to collapse
And do you have sucess in flash? It worked? Do you have TWRP????
---------- Post added at 10:34 AM ---------- Previous post was at 10:30 AM ----------
Reippi said:
I flashed someone's stock 6045Y(Europe) Firmware: 5.0.2-010 03 but couldn't unlock it either. After that I flashed 6045-i806-DCZ. I was really surpriced it let me do that while claiming to be locked and untempered. After that I did factory reset and flashed PAC-ROM. I'm not sure why should I bother to unlock bootloader if I already have TWRP and PAC-ROM flashed. I've no idea how can I even flash rom's with locked bootloader? Maybe oem device-info is bugged.
Anyways I download panasonic eluga switch firmwire, gonna test it after taking backups.
Click to expand...
Click to collapse
That is the point from my previouse question! If you flash TWRP, your bootloader is unlocked by default!
persona78 said:
And do you have sucess in flash? It worked? Do you have TWRP????
---------- Post added at 10:34 AM ---------- Previous post was at 10:30 AM ----------
That is the point from my previouse question! If you flash TWRP, your bootloader is unlocked by default!
Click to expand...
Click to collapse
After flashing panasonic rom, you have unlockable bootloader.
Look here
http://forum.xda-developers.com/idol-3/general/guide-repair-idol-3-t3372076
I have 6045Y and panasonic rom work!
fastboot is detecting device but oem unlock/flashing unlock command not working.
I think that command has been changed since this june month security patch.
yash_rathore25 said:
fastboot is detecting device but oem unlock/flashing unlock command not working.
I think that command has been changed since this june month security patch.
Click to expand...
Click to collapse
It looks like MM update dont include aboot with commands for unlocking bootloader. You have to use mobile upgrade Q PC aPP, or Panasonic eluga firmware flash tool (for 6045Y) to go back to 5.0.2. Then unlock bootloader, and flash update to MM (or when on panasonic firmware youhave to use mobile upgrade Q to go back to stock). When on stock, wat for OTA MM or flash MM from XDA thread.
DallasCZ said:
It looks like MM update dont include aboot with commands for unlocking bootloader. You have to use mobile upgrade Q PC aPP, or Panasonic eluga firmware flash tool (for 6045Y) to go back to 5.0.2. Then unlock bootloader, and flash update to MM (or when on panasonic firmware youhave to use mobile upgrade Q to go back to stock). When on stock, wat for OTA MM or flash MM from XDA thread.
Click to expand...
Click to collapse
but fastboot flash command is working and also sending data to phone but unable to write on phone as bootloader is locked
yash_rathore25 said:
but fastboot flash command is working and also sending data to phone but unable to write on phone as bootloader is locked
Click to expand...
Click to collapse
because they have erased this command/s from aboot partition (bootloader)

Unable to Unlock Bootloader (help!)

I've tried online guides to unlock bootloader, but messed up in some point and now I'm stuck.
1st. Download indepth test and reboot to bootloader within the app.
2nd. Tried adb devices successfully
3rd. Fastboot oem unlock nor Fastboot flashing unlock run (output: fastboot oem unlock failed "remote unknown command")
4th. Decided to make a factory reset (just becase I had to make an stupid desition)
Now I can reboot into fastboot again, because in depth test app won't install anymore. Installer says "Installation failed -An app with the same signature has already been installed"
I've unsuccessfully tried to flash stock rom from recovery but thein depth test seems to be "installed" without front user interface, also fasboot reboot bootloader get stuck in waiting for any device.
Can someone have a solution I already tried anything that comes to my mind.
Thanks.
I was able to solve the problem installing extractly the same apk.
The "fastboot oem unlock" dont work for me
What work on me 5pro is "fastboot flashing unlock"
Then flash twrp and vbmeta
To relock bootloader "fastboot flashing lock"
Source https://forum.xda-developers.com/realme-5-pro/how-to/bootloader-unlock-tutorial-t3985003
Other, might helpful source:
https://forum.xda-developers.com/realme-5-pro/development/rom-pixel-experience-t4053357

HTC X9 Fastboot

Hi, I'm trying to boot into TWRP with out actually flashing it following some threads I have read here the
commands are.
fastboot devices
fastboot boot
This is as far as I can get , I have unlocked the bootloader and have OEM Unlocking checked on, I have the correct TWRP img for the htc x9, htc e56ml tuhl twrp.
1st pic is the fastboot commands and results.
2nd pic is what the phone is doing.
Some help would be appreciated.
Have you installed the Android USB Driver suitable for this Mediatek chip based phone, too?
I have installed it it still doesn't work,
but I can relock and unlock the bootloader so I'm unsure of why the phone isn't booting

relock bootloader but no OS help please

hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
in case anyone has the same problem.
i did solve it by flashing the (raw) firmware via fastboot ( Flash_AFT method )
M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
There are new guides on how to get volte if you want to try again.
[Guide] Easy method to Enable Volte (with root) on Tmobile and maybe other networks on Android 11 and maybe 10
So first you have to root. I used twrp and magisk. There are guides on how to do that you can find by searching around. Then once you do that, follow these directions, What I did was manually entered all of these setprop commands below, on the...
forum.xda-developers.com
This is one but there are others if you need the help.
After relock bootloader i can send phone to warranty?
I tried to relock the phone with the command "fastboot oem asus-lock", but it shows "waitting for any device" and my phone just sit there and do nothing..
Any other method to relock the Zenfone 7 pro?
M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
I believe that relock is impossible and but to make the device recovery to installed status of stock rom keeping with unlock bootloader.
Please see my post. May make it help or not.
When I try to burn rom with TWRP, img burns but it doesn't start and zip gives an error and cannot burn.
When I first burned custom ROM (unofficial AEX), it did not start, so when I deleted the data from TWRP, it seems that I deleted things that should not be erased, so even if I burn it from the zip file, with the error message in the image below I...
forum.xda-developers.com

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