Unlock bootloader? - Xiaomi Redmi Note 5 Pro Questions & Answers

I sold my phone to a friend and he broke my phone chip
Is there any way to unlock via fastboot or adb?
thx

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[Q] Unlocking bootloader

Hello, i'm live in brazil and i buyed my phone here, xperia arc, and i'm trying to unlock the bootloader, and all the time i try to do this i receive the mensage
Failed <remote: oem unlock failed>
What i can do to fix this ? Is there any possible that my phone is alredy unlockead from the store ?
Edit
I tryied this tutorial, and make all the steps, get the 0.3 version, and all that thinks
http://forum.xda-developers.com/showthread.php?p=13230108#post13230108
calage1234 said:
What i can do to fix this ? Is there any possible that my phone is alredy unlockead from the store ?
Click to expand...
Click to collapse
If it's network locked you'll have to pay to get it unlocked.
Pay for...
Hello, i need to pay for who ? Is there another way to unlock the bootloader
?
calage1234 said:
Hello, i need to pay for who ? Is there another way to unlock the bootloader
?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1232033
Thanks
Thanks experience D, but i really not want to pay anyone to make a chance on my phone, i already pay it, very expensive because on brazil the tax is too high, and i think this is dangerous.
I miss you my x10, easily to put xrecovery, various roms, including Miui and Cyanogen.....
I'm again...
I'm looking to sony ericsson's website and it says
"The only way to determine if you can unlock the boot loader for your phone is to connect your phone to the Fastboot tool in the Androidâ„¢ SDK. If your phone can connect to Fastboot, the boot loader can be unlocked."
I can connect my phone to fastboot, but why i don't can unlock the bootloader ??
calage1234 said:
I can connect my phone to fastboot, but why i don't can unlock the bootloader ??
Click to expand...
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Then see the links in my sig.

Unlock Bootloader Rogers Arc

I have an xperia arc that i just got from Rogers yesterday. My sim is unlocked, and i previously had an x10 which i was able to unlock the bootloader. But on my arc i havent been able to unlock the bootloader on my arc. It doesnt seem to go into fastboot mode, but i am able to have adb access on it and put it into flashmode. I've followed instructions on how to install fastboot to work with my computer but it doesnt seem to be working. Any help?
rogers arcs are locked and you have to use a pay service to unlock the bootloader.
http://forum.xda-developers.com/showthread.php?t=1232033
check that post should help you out
Use davinci remote client to unlock its boot loader follow this link.. Though ur phone is sim unlocked u can still use this method for unlocking the boot loader.
forum.xda-developers.com/showthread.php?t=1308850
My phone's sim isnt locked. Will using davinci service client unlock my rogers arc? (not the sim)
zombiej79 said:
rogers arcs are locked and you have to use a pay service to unlock the bootloader.
http://forum.xda-developers.com/showthread.php?t=1232033
check that post should help you out
Click to expand...
Click to collapse
+1 from me!
i HIGHLY recommend this method. Alejandrissimo is a great guy and really good at what he does. He unlocked my Fido Xperia Pro in about 5 minutes.
You don't have to do much...just when he tells you to hold a paper clip from a testpoint to the SD card holder to ground the testpoint, and plugin/unplug the USB cable as needed. Beyond that Alejandrissimo will do all the software side for you.
And the reason it costs money is it uses the program SETool, which costs money on a pay-per-use basis. So Alejandrissimo is just coverying his own costs.
I PMed him, im just waiting for a response. Thanks for your recommondation

G4 Bootloader Relock?

Hi all, I need to relock the bootloader, flashing back stock MM or LP didn't solve the issue for me, neither hard resetting, bootloader is still unlocked and the message appears on every start in the high left corner.
Can You help relock or it's impossible for now please?
It's not possible to relock once it's unlocked. It does tell you this when u unlock it.
Sent from my LG-H815 using Tapatalk
awes0me1 said:
It's not possible to relock once it's unlocked. It does tell you this when u unlock it.
Sent from my LG-H815 using Tapatalk
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thanks for the answer, I did not remember that message. Strange for me that noone found or searched a method to relock for selling the phone :good:
Getting it relocked is the only way to send it back for warranty claim. I wasn't able to get it recognized by my computer so that I can run fastboot comands on it - the right one is ./fastboot oem lock
maildaemon said:
Getting it relocked is the only way to send it back for warranty claim. I wasn't able to get it recognized by my computer so that I can run fastboot comands on it - the right one is ./fastboot oem lock
Click to expand...
Click to collapse
Did you use the proper fastboot.exe? What OS is your computer? If it's windows try these.
It seems that in order to get fastboot operational, you need to have a working bootloader. So, after a couple (hundred) of tries - DO NOT FLASH KDZ (REFURBISH) your LG G4, it still boots once in a while and if it has your account and data and it will be faster to get to fastboot mode and get the bootloader locked again. Can somebody confirm that you can execute "fastboot oem lock" on an unlocked device? This will save us a lot of time trying to get the device to that state...
for me it is impossibile. If you have a g4 with bootloader locked and you doing fastboot oem unlock it says that it is no possibile...you must follow the instructions that lg provides with file unlock.bin
So is impossibile relock bootloader with fastboot oem lock...I hope that anyone find the way to do it...
Well unfortunately it is not posible to lock the bootloader via "fastboot oem lock" I'm waiting for user @warloxfre for some more info on his ideas (fingerscrossed)

Is it possible to flash a bootloader?

Since the bootloader itself is a piece of software. Is it possible to flash an already unlocked bootloader on a locked phone to unlock it?
Is it possible to unlock bootloader with existing Lenovo id which I use earlier to unlock my other Lenovo P2 bootloader?

OEM unlock greyed out, but my bootloader is already unlocked, how can I root?

When I boot the phone into fastboot mode, it doesn't recognize the bootloader is unlocked, even though once I turn on the phone, it does recognize it's already bootloader unlocked. I followed the EDL method tutorial, I have an LGG710EAW model, with the Indian versions of pie on it. Hope someone can help me figure out how to root it. Thanks.

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