R1 HD Amazon Bootloader unlock method

TerryS2K

Member
Dec 10, 2012
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try method 2 in the OP i just added it
I thought method 2 would work for me but it didn't. Same error :(
I don't know what the heck is going on. I guess I may have to just use it as is. I was hoping to be able to install custom roms in the future though.
Do you have any other tricks up your sleeve that might work for me?
 

triggerlord

Senior Member
Dec 15, 2015
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If I already have TWRP installed, would it be of any benefit?
OMG, he just told you why. Lol. TWRP (most of the time) can't install a ROM or new kernels without an unlocked bootloader.

Sent from my BLU R1 HD using XDA Labs

Well, then you have root access so you should be unlocked then.
Root access is not the same thing as an unlocked bootloader.

Sent from my BLU R1 HD using XDA Labs
 

jlvlawrence

Senior Member
Dec 29, 2011
718
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Lawrence
I can't seem to get the pre loader drivers to install. I have a really crappy windows 7 machine that pretty slow. It keeps telling me the device was unplugged when they try and install. It's there somewhere that I can download them?
 

Tomsgt

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Sep 5, 2011
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So I was ended up loading the scatter file again and was able to successfully get it unlocked using method 2!!
But...
now it's in a bootloop :(
What do I do to get out of it?
Tried booting into recovery but it just goes back to the bootloop.
Note: if you have twrp recovery install and unlock your bootloader with METHOD 2 the device will try and boot to recovery and wipe data which will fail because you and twrp installed.
The only way to fix this is to boot to fastboot mode and run this command
Code:
fastboot format userdata
then just reboot out of fastboot mode and the device will boot up.
Code:
fastboot reboot
Need help with these commands check out this video jump ahead to 6min 45sec to see commands above
 
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TerryS2K

Member
Dec 10, 2012
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Note: if you have twrp recovery install and unlock your bootloader with METHOD 2 the device will try and boot to recovery and wipe data which will fail because you and twrp installed.
The only way to fix this is to boot to fastboot mode and run this command
Code:
fastboot format userdata
then just reboot out of fastboot mode and the device will boot up.
Code:
fastboot reboot
Need help with these commands check out this video jump ahead to 6min 45sec to see commands above
Thank you so much for your help!!
I was trying to boot into TWRP to wipe data but it was still in that bootloop, I figured that's what needed to be done.
I didn't know the commands to do it in fastboot.
That worked like a charm, much appreciated :)
 
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Yianaki

Senior Member
Nov 14, 2007
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I somehow corrupted fastboot. Through spflash I got recovery and root working fine but fastboot when selected at boot menu just says entering fastboot. Then none of the fastboot commands work. I tried using the spflash method to unlock the bootloader after I had recovery. It was successful but after that fastboot hasn't worked. I tried every bootloader unlock method here on XDA but they all fail when it reboots to fastboot. Adb works in the rom when the scripts reboot to fastboot they just sit there.

I tired a spflash backup to get back to a normal locked device and that didn't fix it. I also backed up system and boot, restoring them didn't help.

Can anyone help me understand what happened and how to fix it.
 
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Tomsgt

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Sep 5, 2011
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I somehow corrupted fastboot. Through spflash I got recovery and root working fine but fastboot when selected at boot menu just says entering fastboot. Then none of the fastboot commands work. I tried using the spflash method to unlock the bootloader after I had recovery. It was successful but after that fastboot hasn't worked. I tried every bootloader unlock method here on XDA but they all fail when it reboots to fastboot. Adb works in the rom when the scripts reboot to fastboot they just sit there.

I tired a spflash backup to get back to a normal locked device and that didn't fix it. I also backed up system and boot, restoring them didn't help.

Can anyone help me understand what happened and how to fix it.
that just sounds like youe fastboot drivers arent installed for some reason. try a different usb cable or port on your computer
 

wunderdrug

Senior Member
Jun 5, 2014
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Just a little note for those who are following these videos: if you are backing up to an SD card using TWRP (as described in the rooting video), do not do what I did and format the SD card as "Internal Storage". Format it as "Portable" instead.

This is because after the you go to the next step and unlock the bootloader, the device gets wiped (factory reset), deleting the keys needed to decrypt the "Internal Storage" SD card. Without the decryption key, you will not be able to read that SD again -- you've essentially lost your backup.
 
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Tomsgt

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Just a little note for those who are following these videos: if you are backing up to an SD card using TWRP (as described in the rooting video), do not do what I did and format the SD card as "Internal Storage". Format it as "Portable" instead.

This is because after the you go to the next step and unlock the bootloader, the device gets wiped (factory reset), deleting the keys needed to decrypt the "Internal Storage" SD card. Without the decryption key, you will not be able to read that SD again -- you've essentially lost your backup.
yes that is a great point thanks
 
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Yianaki

Senior Member
Nov 14, 2007
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that just sounds like youe fastboot drivers arent installed for some reason. try a different usb cable or port on your computer
Appreciate the quick response. Yep I didn't have Fastboot drivers installed. I thought they would have installed along with the Mediatech drivers. Also ADB in Android worked so I thought i had a problem. I don't remember fastboot ever looking like that on phone going back to my OG Droid. Blue seems to do everything cheap.

Thanks a lot again for all your help and guidance.
 
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karty

Senior Member
Feb 15, 2012
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@Tomsgt dear frnd
I am getting Unlock failed at Volume up button.. help me? ie: flashed scatter file
Ver: blu_r0010uu_v6.4_generic 10-07-2016 00:10

Thank you :)
 
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