how to locking bootloader of lrnovo A680 row - General Questions and Answers

please help me how to lock oem or bootloader to install ote firmware update on stock rom?

You use Fastboot command to achieve this:
Code:
fastboot devices
fastboot flashing lock <- or: fastboot oem lock
More info here:
How to Relock Bootloader via Fastboot on Android
Although having an unlocked bootloader is useful in many ways like flashing firmware (factory images), installing TWRP and getting root, but it can also lead to blocked services on your device due …
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Locked bootloader / but fastboot is working?? Not flashing recovery though

OTA softbricked? the device of my friend
Although the bootloader is unlocked, I was able to flash new firmware with fastboot with succes!! The device is now booting 4.1.1 (10.4.2.20)again
So, I tried to flash TWRP through fastboot (it's still responding to fastboot), but that fails:
Code:
FAILED <remote: <InvalidState>>
Thinking it is because the bootloader is locked, installed unlocking tool. Run it, at the last step, where you have to click the -normally- bar with image of locked lock to unlock, I get the dreaded network error, more importantly: the lock image is UNlocked
What could be the case now?
n/m http://forum.xda-developers.com/showthread.php?t=2037266
fastboot is available, flashing is not

[Q] Relocking without flashing firmware

To my knowledge, to relock the bootloader we need to:
fastboot oem lock begin
<flash firmware>
fastboot oem lock
Is there any way to lock the bootloader without flashing the firmware?

Stuck in fastboot with locked bootloader

I have a serious problem: my device's partitions are all erased and formatted and the boot loader is locked which is why I can't install a recovery or anything else. fastboot oem unlock doesn't work for any reason. It just boots and does nothing. After entering fastboot again it says it's locked.
The alternative method with adb doesn't work as I don't have a recovery nor do I have a system.img on the device. I can only enter fastboot now and flash the radio. How can I flash stock CM11S now? I need to unlock the bootloader and fastboot won't let me!
h**p://forum.xda-developers.com/showpost.php?p=55952004&postcount=457
Guy with a similar problem, who found a solution... Give it a try!
How on earth did you manage to erase all the partitions?
Transmitted via Bacon

How to restore the encrypted bootloader?

hi guys, i've unlocked the bootloader with the dc-unlocker2client , And i want to go back to the original boot loader, i've tried to re flash the 137 and eve the 129 chinese rom but the annoying message on boot startup still exist..
so how to go back?
youre mixing up two things: the bootloader and the boot image
the former (bootloader) you unlock via fastboot and the unlock code that you read out via dc-unlocker. this is the reason why u receive the message at bootup and u can relock the bootloader via fastboot as well (fastboot oem relock XXXXXXXXX)
the latter is the boot image that u have to decrypt in order to be able to root properly and not be stuck in a boot loop. the boot.img is reflashed once u install a new stock firmware. but the bootloader lock state is untouched by this, thats why u manually have to relock it using fastboot!
cheers
thats weird.. i entered the fastboot mode
and opened the minimal adb - and wrote the command : fastboot oem relock XXXXXXXXX
the XXXX is my unlock code from the dc software i guess..
and its says : failed : stat not match
so.. how can i lock it again?
http://postimg.org/image/50dz3y0vf/
U should flash stock recovery first...then relock your bootloader

FRP unlock

Is there any way to unlock frp from the fastboot if the bootloader is unlocked and the device is bricked.
Already tried : fastboot oem relock xxxxx
Returns : command not allowed
I am on stock recovery and the device is bricked right now.
Help needed!Many thanks!

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