That's all what I got when I try to oem unlock my device. Please can you help me in it, I would like to downgrade it to Lollipop, and that requires an oem unlock, and I don't know what's the unlock key. Is there anyone who could tell me that?

And yes, I have enabled usb debugging and oem unlock options in the developers settings.

Any solution yet?

Sent from my Lenovo A7020a48 using Tapatalk

Hello how did u upgrade to MM ?

dragonkaiser said:

Hello how did u upgrade to MM ?

I got my phone with android 6.0 pre-installed.
Not able to find any working root method.
Could you please help?

Hey there I have recently got a Lenovo Vibe B (A2016) and am also trying to gain root so gaining an open bootloader is must first.

I saw somewhere online people also using these following lines using adb and fastboot so give them a shot and let me know your progress.

Unlock bootloader -

"fastboot -i 0x2b4c oem unlock-go"

To check the status of the bootloader -

"fastboot -i 0x2b4c oem get-device-info"

BayramRav3r said:

Hey there I have recently got a Lenovo Vibe B (A2016) and am also trying to gain root so gaining an open bootloader is must first.

I saw somewhere online people also using these following lines using adb and fastboot so give them a shot and let me know your progress.

Unlock bootloader -

"fastboot -i 0x2b4c oem unlock-go"

To check the status of the bootloader -

"fastboot -i 0x2b4c oem get-device-info"

Click to expand...

"fastboot -i 0x2b4c oem unlock-go" -> The device react but i can't do volume up to confirm. (the key didn't do anything but work fine in android os)

"fastboot -i 0x2b4c oem get-device-info" -> FAILED (unknown command)

"fastboot -i 0x2b4c getvar all" ->
(bootloader) warranty: yes
(bootloader) unlocked: no
(bootloader) secure: yes
(bootloader) kernel: lk
(bootloader) product: K52_E78
(bootloader) version: 0.5

I've a modded fastboot image that didn't ask the confirmation for the bootloader unlock (made by me by modifying lk.bin instructions with an hex editor and a decompiler), but i can't find a way to flash it...

That's interesting looks like it might need a key. Is it running 6.0.1 (MM) have u tried these -

" fastboot oem unlock "

" fastboot flashing unlock "

If u do manage to unlock bootloader you can lock again using -

" fastboot oem lock "

" fastboot oem relock "

" fastboot flashing lock "

Good Luck!

BayramRav3r said:

That's interesting looks like it might need a key. Is it running 6.0.1 (MM) have u tried these -

" fastboot oem unlock "

" fastboot flashing unlock "

If u do manage to unlock bootloader you can lock again using -

" fastboot oem lock "

" fastboot oem relock "

" fastboot flashing lock "

Good Luck!

Click to expand...

" fastboot oem unlock " -> Same Problem (volume up not working)

" fastboot flashing unlock " -> FAILED (unknown command)

Motrola (aka Lenovo) often use codes for unlock bootloader

Dam sorry I couldn't help there, it's about as far as I got! Have u managed to root without 3rd party apps like KingRoot as I also want a systemless root.

Success in unlock bootloader?/?

Did u got success in unlock bootloader????

gyurix said:

That's all what I got when I try to oem unlock my device. Please can you help me in it, I would like to downgrade it to Lollipop, and that requires an oem unlock, and I don't know what's the unlock key. Is there anyone who could tell me that?

And yes, I have enabled usb debugging and oem unlock options in the developers settings.

Enable oem unlock option in developer setting. Boot your android in fastboot mode and type commands without quotes
"fastboot devices" then enter
"fastboot oem unlock" then enter

I hope your bootloader unlocked.

Hello,

First of all you need to downgrade to Android 5.1 and then you can root it using KingRoot.

Y0aann said:

"fastboot -i 0x2b4c oem unlock-go" -> The device react but i can't do volume up to confirm. (the key didn't do anything but work fine in android os)

"fastboot -i 0x2b4c oem get-device-info" -> FAILED (unknown command)

"fastboot -i 0x2b4c getvar all" ->
(bootloader) warranty: yes
(bootloader) unlocked: no
(bootloader) secure: yes
(bootloader) kernel: lk
(bootloader) product: K52_E78
(bootloader) version: 0.5

I've a modded fastboot image that didn't ask the confirmation for the bootloader unlock (made by me by modifying lk.bin instructions with an hex editor and a decompiler), but i can't find a way to flash it...

Click to expand...

Mate,could you modify the lk.bin for a7020a48 to acheive root?

hello iam looking for the stock 5.1 rom
the one that includes the Dutch language
all the roms i tried multi languages but no Dutch language
does somebody knows the right one for me?

HEY SEARCH masterpiece on youtube and watch video cause that would help....and i cant tell link here.

C:\Program Files\platform-tools>fastboot -i 0x2b4c getvar all
fastboot: unknown option -- i

C:\Program Files\platform-tools>i
'i' is not recognized as an internal or external command,
operable program or batch file.

C:\Program Files\platform-tools>fastboot -i 0x2b4c getvar all
fastboot: unknown option -- i

C:\Program Files\platform-tools>fastboot oem unlock
(bootloader) Unsupportive project for unlock
FAILED (remote: 'unknown reason')
fastboot: error: Command failed

C:\Program Files\platform-tools>fastboot flashing unlock
(bootloader) Unsupportive project for unlock
FAILED (remote: 'unknown reason')
fastboot: error: Command failed

C:\Program Files\platform-tools>

Hardware : MT6755V/BM
Model : Lenovo A7020a48
Build number : A7020a48_S401_190328_ROW
Build date UTC : 20190328-151924
Android v : 6.0
Baseband v: K52.ROW.M.LWG.V46, 2016/11/25 09:19
Kernel v : 3.18.22+ (buildslave@njws102) (gcc version 4.9.x-google 20140827 (prerelease) (GCC) ) #1 SMP Thu Mar 28 23:20:27 CST 2019