Bootloader Error Vivo y51 - Vivo Y51L Questions & Answers

Hi, i have a vivo y51 and i want to root the phone i tried a lot of thing.When i use adb 'adb reboot bootloader' and 'fastboot oem unlock' it says FAILED (remote: unknown command or device is lock).Is there anyway to fix the error or completely change the phone's os?

Vivo y51 bootloader unlock is easy
To unlock your bootloader You'll need to upgrade to latest version i.e.
PDF1510 2.6.7
Then follow the steps in this thread

Related

Problems with unlocking the bootloader

I have a problem
I want to unblock the bootloader, but when I get to put the code "fastboot oem device-id" it gives the following error "FAILED (remote: unknown command)". No matter how many times you try or the version of windows you use, you still give the same error.
In this guide you can find how to unlock bootloader if you have 2016 model, but beware root method probably don't work so just follow steps to unlock bootloader for whatever reason you want to do that
https://forum.xda-developers.com/lg-k10/how-to/friendly-root-method-lg-k8-k10-t3531223

Bootloader re-locked and now "System Destroyed" with no solutions

Hi all, I had official MIUI Global 11 on Android 10 on a phone with unlocked bootloader and a recovery. I wanted to re-lock the bootloader, so I went to fastboot and I gave the command to lock it.
Obviously (but I didn't even imagine it) the devide DID lock, but now it doesn't start any longer. ""System destroyed" is the message.
What I want to get is one of these two results: having a working phone OR having everything erased.
What I have already tried is:
- installing a firmware via fastboot: failed because the bootloader is locked
- flashing single .img via fastboot: failed because the bootloader is locked
- erase partitions: failed because the bootloader is locked
- unlock again the phone via fastboot: failed
- unlock again the phone via Mi Unlock: failed because missing authorization in developer options
Let's add the fact that I don't have windows, but Mac, that reduces the available options.
ANY SUGGESTIONS?
You can use Platform tools in windows.As far as i know platform tools can be used both locked and unlocked bootloader.You can search on YouTube how to flash mi phones through platform tools.
francanna said:
Hi all, I had official MIUI Global 11 on Android 10 on a phone with unlocked bootloader and a recovery. I wanted to re-lock the bootloader, so I went to fastboot and I gave the command to lock it.
Obviously (but I didn't even imagine it) the devide DID lock, but now it doesn't start any longer. ""System destroyed" is the message.
What I want to get is one of these two results: having a working phone OR having everything erased.
What I have already tried is:
- installing a firmware via fastboot: failed because the bootloader is locked
- flashing single .img via fastboot: failed because the bootloader is locked
- erase partitions: failed because the bootloader is locked
- unlock again the phone via fastboot: failed
- unlock again the phone via Mi Unlock: failed because missing authorization in developer options
Let's add the fact that I don't have windows, but Mac, that reduces the available options.
ANY SUGGESTIONS?
Click to expand...
Click to collapse
I think that the only way to flash it successfully again is to use QPST ,but you need to open the phone remove battery and get 9008 port , check in YouTube.

image verification error, TWRP Install failed.

Hello, I'm new here so if I miss any Forum rules please let me know.
TL;DR: I unlocked the bootloader of my VNS-L31 with PotatoNV and now I get the Message FAILED (remote: 'image verification error')
So, i want to install a Custom ROM in order to get OTG Support for my Smartphone. I'm new to this but as I figured out I need to do the following Steps.
1. Unlock Bootloader using PotatoNV
2. Install TWRP
3. Root via SU
3. Install CustomRom via TWRP
I think I managed to unlock my bootloader as I get the "your device cant be trusted" message every time I boot. I can enter fastboot mode with ADB and my device is recognized when it's in fastboot mode. when I try now to install TWRP (i tried different versions) I get the following message:
J:\Smartphone\TWRP\platform-tools_r31.0.2-windows\platform-tools>fastboot flash recovery twrp-3.1.1-0-venus.img
Sending 'recovery' (24464 KB) OKAY [ 0.648s]
Writing 'recovery' FAILED (remote: 'image verification error')
fastboot: error: Command failed
Reading the Forums suggested to relock the Bootloader and then unlock it again in good old " did you turn it off and on again" manner. but when I googled how to relock and unlock I got the warning that a lot of devices cant be unlocked a second time. So should I try to relock it via fastboot ? if I do so, can I unlock it again with the new unlockcode i set in PotatoNV, or do I need to open my phone for Testpoint mode and unlock it with PotatoNV again?
so hopefully i didn't miss any necessary information and someone here can help me or point me in the right direction
greetings
Elfenfreund
PS: Pardon my Writing. It's late and my English is not very trained.
No need to relock. Just unlock it again using the code given by the Potato. Then try flashing again the image.

[Huawei P Smart] Relock bootloader after unlock with PotatoNV

Hi guys, I want to re-lock the bootloader of my Huawei P Smart FIG LX1 unlocked with PotatoNV. When I try to do the operation with adb "fastboot oem relock (or lock) 1111111111111111" I get this error message "failed: remote stat not match". But by entering the command "fastboot oem unlock 1111111111111111" the procedure is successful.
I also tried to install a stock rom but the bootloader remains unlocked. Thank you all!
Try to restore with stock recovery, it should relock it

Relock bootloader

I would like to relock the bootloader on my Xperia X Compact. My phone is in bootloader mode, my computer can see it just fine, but when I run fastboot oem lock I just get an error saying FAILED (remote: unknown command). Does anyone know how to relock the bootloader?

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