Android One Device Re-locking Bootloader
Open Fastboot CMD And Type:
Code:
fastboot oem lock
That's It!
what i messed up?
i have installed custom official cynogen14.1 rom and twrp recovery. everything was working fine.
but i messed up with bootloader. I have locked oem from fastboot mode without enabling option for oem unlocking in developer settings.
Now as my phone have custom rom and twrp installed it went into bootloop and only shows zuk logo and again restart.
What i diid till now?
i have opened backcover so that i can turn of bootloop and phone by disconecting battery.
I can enter into fastboot mode by pressing vol.+ and vol- buttons sumultaneously and connecting usb cable.
But i cannot unlock bootloader as it says unlocking bootloader not allowed. I have tried device specific commads like "fastboot -i 0x2b4c oem unlock" and "fastboot -i 0x2b4c oem unlock-go" but nothing works.
i have stock recovery image but cannot flash while bootloader is locked.
i can enter into adb sideload by following method:
by loading stock recovery by typing "fastboot boot recovery.img" (this does not work with twrp as it says signature varification failed)
and then selecting apply update >> selecting apply fron adb
this much i can do does anyone knows how to recover from such a state.
please help me or my phone will be a waste.
is there any way to install stock recovery i think phone will boot properly if i managed to install stock recovery.
Hello,
I have a galaxsy s5 906k and I've been reading on how to unlock the bootloader as I'm trying to install Remix OS and it seems I've come across a lot of misinformation.... and if possible can someone tell me what exactly I need to unlock the bootloader, as I can't find a list of the appropriate tools? Do I need twrp for my specific device?? Some have said yes and some no.
My phone is already rooted.
Also post unlock bootloader question, can I use the 900k rom from remix to install on my 906k?
EDIT**
I can only boot into download mode, not fastboot mode. adb devices returns the device, but fastboot devices returns nothing. Tried adb reboot-bootloader`and it just shows waiting for any device.
These all boot into download/odin mode!!!!!!
adb reboot download
adb reboot bootloader / adb reboot-bootloader
fastboot oem unlock
fastboot flashing unlock
Only one that boots into recovery mode! Then I go to Reboot to bootloader and it comes back to recovery mode!!!!!!!!!!
adb reboot recovery
OEM unlock & usb debugging both are enabled in developer option... but giving same error, FAILED(remote:unknown command)
Follow the procedure as shown in the thread
Just try to flash with older stock firmware using SP Flash Tool.
I had a similar problem and the older firmware gave it up unlock bootloader without any problem.
When unlocking with fastboot keep the order:
fastboot oem unlock
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot format userdata
Please change name of twrp-3xx....img to twrp.img
how to see unlock key when our devices unlocked motorola e4plus
Code:
plcrazyprogrammer said:
Just try to flash with older stock firmware using SP Flash Tool.
I had a similar problem and the older firmware gave it up unlock bootloader without any problem.
When unlocking with fastboot keep the order:
fastboot oem unlock
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot format userdata
Please change name of twrp-3xx....img to twrp.img
Click to expand...
Click to collapse
I followed youtube video (sorry I am not allowed to post URL)
The title of the video is: How to Install TWRP in LeEco Mobiles | Without ROOT | Simple and Riskless 2018
(1) Disable phone password, pin, fingerprint
(2) Boot phone to fastboot mode(hold Power+Volume Down button), connect to PC
(3) C:\adb>fastboot oem unlock-go （success）
(4) C:\adb>fastboot boot twrp-3.2.3-1-zl1.img
It enter TWRP and ask for password (Mount, Decrypt Data)
Did some research, seems I also need to erase userdata before reboot.
Can you help me post the sequence of commands here, or I should use a different version of TWRP?
I also tried
fastboot oem unlock-go
fastboot flash recovery twrp-3.2.3-1-zl1.img
fastboot reboot
It will boot into EUI instead of TWRP.
Then I tried
fastboot oem unlock-go
fastboot flash recovery twrp-3.2.3-1-zl1.img
Then hold Power+Volume UP button instead of run "fastboot reboot", it reboot, BUT enter a black screen.
Please help me to get TWRP work, thanks!
I tried a different version of TWRP, twrp-3.2.1-0-zl1.img. It worked.
This is what I did:
fastboot oem unlock-go
fastboot format userdata
fastboot boot twrp-3.2.1-0-zl1.img
Then in TWRP, I tried
(1) backup,
(2) wipe (advanced wipe, select system, data, dalvik/ART cache, cache)
(3) Restore using backup created in step 1
After restore and reboot, the phone back to original.
Then I did:
1. Enable the Developer Option.
2. Enable OEM Unlocking and USB Debugging
3. ReBoot Phone to fastboot mode (Volume Down + Power button) and connect to PC.
4. fastboot oem unlock-go
Weird, this time I got error:
C:\adb>fastboot oem unlock-go
...
FAILED (remote: oem unlock is not allowed)
finished. total time: 0.006s
How can this happen? How to fix it???
Thanks!
rogerxda2018 said:
I followed youtube video (sorry I am not allowed to post URL)
The title of the video is: How to Install TWRP in LeEco Mobiles | Without ROOT | Simple and Riskless 2018
(1) Disable phone password, pin, fingerprint
(2) Boot phone to fastboot mode(hold Power+Volume Down button), connect to PC
(3) C:\adb>fastboot oem unlock-go （success）
(4) C:\adb>fastboot boot twrp-3.2.3-1-zl1.img
It enter TWRP and ask for password (Mount, Decrypt Data)
Did some research, seems I also need to erase userdata before reboot.
Can you help me post the sequence of commands here, or I should use a different version of TWRP?
I also tried
fastboot oem unlock-go
fastboot flash recovery twrp-3.2.3-1-zl1.img
fastboot reboot
It will boot into EUI instead of TWRP.
Then I tried
fastboot oem unlock-go
fastboot flash recovery twrp-3.2.3-1-zl1.img
Then hold Power+Volume UP button instead of run "fastboot reboot", it reboot, BUT enter a black screen.
Please help me to get TWRP work, thanks!
Click to expand...
Click to collapse
rogerxda2018 said:
I tried a different version of TWRP, twrp-3.2.1-0-zl1.img. It worked.
This is what I did:
fastboot oem unlock-go
fastboot format userdata
fastboot boot twrp-3.2.1-0-zl1.img
Then in TWRP, I tried
(1) backup,
(2) wipe (advanced wipe, select system, data, dalvik/ART cache, cache)
(3) Restore using backup created in step 1
After restore and reboot, the phone back to original.
Then I did:
1. Enable the Developer Option.
2. Enable OEM Unlocking and USB Debugging
3. ReBoot Phone to fastboot mode (Volume Down + Power button) and connect to PC.
4. fastboot oem unlock-go
Weird, this time I got error:
C:\adb>fastboot oem unlock-go
...
FAILED (remote: oem unlock is not allowed)
finished. total time: 0.006s
How can this happen? How to fix it???
Thanks!
Click to expand...
Click to collapse
I can help you with issue, But, lets keep it within one thread.