Database Users

How to downgrade from Android 7.1.1 Beta (Build NPF26F)

Hey guys, so I bought a second hand Nexus 6P, and it was running the latest android beta.
Is there anyway for me to rollback or downgrade the version, so that I can unlock boot loader, and root the device?
I'm interested in installing this rom
http://forum.xda-developers.com/nexus-6p/development/rom-weta-v1-0-t3350665
Any help is appreciated

gger123 said:
Hey guys, so I bought a second hand Nexus 6P, and it was running the latest android beta.
Is there anyway for me to rollback or downgrade the version, so that I can unlock boot loader, and root the device?
I'm interested in installing this rom
http://forum.xda-developers.com/nexus-6p/development/rom-weta-v1-0-t3350665
Any help is appreciated
Click to expand...
Click to collapse
I don't run the previews, so forgive me if I'm missing something here, but.. why do you need to downgrade to unlock the bootloader? Do the previews not have the "OEM Unlocking" option in developer settings? All you need to do to is enable that and then plug it in to a PC and use "fastboot flashing unlock" to unlock the bootloader. That will wipe the entire phone, including internal storage. Then just fastboot a custom recovery and install your ROM of choice.
If the previews don't have the OEM unlocking option, then log into your Gmail account on the 6P and then visit Android.com/beta and it should show your device enrolled in the beta, select unenroll. This will also wipe all data including internal storage. From there you'd go back to my first paragraph.
Read this and familiarize yourself with it and you're good to go!
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928/page513

RoyJ said:
I don't run the previews, so forgive me if I'm missing something here, but.. why do you need to downgrade to unlock the bootloader? Do the previews not have the "OEM Unlocking" option in developer settings? All you need to do to is enable that and then plug it in to a PC and use "fastboot flashing unlock" to unlock the bootloader. That will wipe the entire phone, including internal storage. Then just fastboot a custom recovery and install your ROM of choice.
If the previews don't have the OEM unlocking option, then log into your Gmail account on the 6P and then visit Android.com/beta and it should show your device enrolled in the beta, select unenroll. This will also wipe all data including internal storage. From there you'd go back to my first paragraph.
Read this and familiarize yourself with it and you're good to go!
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928/page513
Click to expand...
Click to collapse
Hey mate, thanks for guiding me! It does have the OEM unlocking option. I will now look into following your steps, Appreciate the help.

gger123 said:
Hey mate, thanks for guiding me! It does have the OEM unlocking option. I will now look into following your steps, Appreciate the help.
Click to expand...
Click to collapse
Hopefully you were able to figure it out! But like you discovered, it does have an OEM unlocking option. I'm running the dev preview, and rooting is just as easy. If you haven't found any guides here's what you need to do.
Also, make sure you also turn on USB Debugging in your developer settings.
If you've already unlocked your phone, then you already have adb set up. In the case that you don't, install adb on your computer. This tool ( forum.xda-developers.com/showthread.php?t=2588979 ) is very easy to use, although there are other ways to get adb. Run it and select yes to all to install adb. You access adb through your cmd.
1) Download TWRP (custom recovery) from here - dl.twrp.me/angler/
2) Download SuperSU onto your phone from here - download.chainfire.eu/1014/SuperSU/SR5-SuperSU-v2.78-SR5-20161130091551.zip
3) Put your phone into fastboot. Power down and then hold power and volume down until fastboot pops up. Plug into your pc and then open command prompt.
4) Type " fastboot flash recovery * ". The * should be replaced with the location of the file and then the file name such as C:\Users\Kris\Desktop\twrp-3.0.2-2-angler.img
then hit enter and it should write your recovery.
5) Use your volume down button to scroll to the tab that says recovery. Hit your power button to boot into recovery.
6) You'll get a popup and go ahead and swipe to allow your system to be modified. Tap on the "Install" tab in the top left. Locate the SuperSU zip and select it. Swipe to flash it.
7) Once that's completed hit reboot and you're successfully rooted!

Wiley Fox Swift2+ Bootloader Unlock

It seems that unlocking the BootLoader on the WileyFox Swift2+ is even easier.
To unlock the boot loader (WARNING!!! This wipes your user data!!!)
Go To 'Settings - About Phone' Tap 'Build Number' seven times to enable 'Developer Options'.
Go To 'Developer Options' Enable 'Advanced Reboot', Enable 'OEM Unlocking'
...## not sure if these next few steps are even needed!!
Connect to computer running "Minimal ADB and Fastboot"
Open command window as administrator (To prevent Win10 messing around).
Enter command "fastboot oem unlock"
...##
Press the phone 'Power Off - Reboot - FastBoot'
PC detects device and states "Follow instructions on device screen"
Phone screen issues dire warnings about unlocking Bootloader.
Proceed and job done Bootloader is Unlocked (device at this point not rooted).
The stock Swift2+ Cyanogen Rom is no longer available - seek out the LineageOS rom instead

I unlocked my bootloader the other day and those are the same steps I did so I can confirm this works.
I then proceeded to root the phone with SuperSU 2.78. Worked a treat.

Swift 2 Plus and SuperSU
FelixPiers said:
I unlocked my bootloader the other day and those are the same steps I did so I can confirm this works.
I then proceeded to root the phone with SuperSU 2.78. Worked a treat.
Click to expand...
Click to collapse
Yes initially the only version of SuperSU I could find was v2.46, which kept failing.

Any help? My reboot menu doesn't have a fastboot option. Yes I have advanced reboot and oem unlocking enabled.
Edit: Sorted it. Turns out you have to reboot into the bootloader.

thejackle123 said:
Any help? My reboot menu doesn't have a fastboot option. Yes I have advanced reboot and oem unlocking enabled.
Edit: Sorted it. Turns out you have to reboot into the bootloader.
Click to expand...
Click to collapse
Is it too hard to google your question?
Works on most devices:
1) Turn off device
2) Hold VOLUME UP button
3) Connect device to PC via usb-cable

I installed SuperSU, before that I installed TWRP. Now I am unable to install the latest update "cm-marmite-a1478a0ee9-to-7aa1c797975e-signed"
When I download this update and perform the actual install, it gives an error. Restarting the phone via TWRP recovery gives the same error. I am getting "Error 7"
So no I want to revert back, to get rid off SuperSU and TWRP to install all updates and then later root the device with TWRP and SuperSU. How do I get the original state of the phone back?
Or do you have any advice how to get the latest update installed?
Thx.

SMessy said:
It seems that unlocking the BootLoader on the WileyFox Swift2+ is even easier.
To unlock the boot loader (WARNING!!! This wipes your user data!!!)
Go To 'Settings - About Phone' Tap 'Build Number' seven times to enable 'Developer Options'.
Go To 'Developer Options' Enable 'Advanced Reboot', Enable 'OEM Unlocking'
...## not sure if these next few steps are even needed!!
Connect to computer running "Minimal ADB and Fastboot"
Open command window as administrator (To prevent Win10 messing around).
Enter command "fastboot oem unlock"
...##
Press the phone 'Power Off - Reboot - FastBoot'
PC detects device and states "Follow instructions on device screen"
Phone screen issues dire warnings about unlocking Bootloader.
Proceed and job done Bootloader is Unlocked (device at this point not rooted).
The stock Swift2+ Cyanogen Rom is here
http://builds.cyngn.com/factory/marmite/cm-13.1.4-ZNH2KAS5RM-marmite-signed-fastboot-c64f8f5d87.zip
Click to expand...
Click to collapse
Hi, mate
unfortunately teh link to the stock rom is not working.
Can u provide me with another working link?
I deleted my rom and i can't find the stock to reanimate my phone.....
EDIT!!!!
All done, device is restored
THy @ll

Rom location
RayfG said:
Hi, mate
unfortunately teh link to the stock rom is not working.
Can u provide me with another working link?
I deleted my rom and i can't find the stock to reanimate my phone.....
EDIT!!!!
All done, device is restored
THy @ll
Click to expand...
Click to collapse
Just to confirm the stock room is still at this location as at 2nd march 2017
http://builds.cyngn.com/factory/marmite/cm-13.1.4-ZNH2KAS5RM-marmite-signed-fastboot-c64f8f5d87.zip

"Just to confirm the stock ROM is still at this location as at 2nd march 2017 :"
Link above does not work now, however below one does.
https://androidfilehost.com/?w=files&flid=126553

Hmmm. I'm going to try again. Before I got fastboot in red and Dvice Status: Locked. But I'll try again, see where I get.
Image of issue: https://ibb.co/jfLPye
edit: Updating to the latest Oreo update (8.1 I think)
---------- Post added at 08:34 AM ---------- Previous post was at 08:14 AM ----------
ohhhhhhh, I had to turn the phone off while connected, already running "adb & fastboot" (not just adb) then (phone connected in USB debugging mode) turn off the phone and hold volume up (no need to hole the power key as connected and I got the option to unlock with a warning that I may void the warranty. Then my phone encrypted/re-encrypted itself (I think it was already encrypted).
Now to flash TWRP (3.2 I think) and flash a custom ROM (Lineage 15.1 / 8.1 Oreo) Not sure if I should root or not. And if I do, should I root before installing 8.1?

got damit i never understand how to flash twrp i followed what google said.
fastboot flash recovery XXX.img it does its thing i reboot still no recovery im on stock cm12 ? i think or cm13 android 6.0)

Hi, trying to unlock my S2+ bootloader with Ubuntu MATE. Have completed all the steps listed, entered fastboot oem unlock into the terminal which now just sits there displaying < waiting for any device >
Any idea where I go from here?

bl91 said:
Hi, trying to unlock my S2+ bootloader with Ubuntu MATE. Have completed all the steps listed, entered fastboot oem unlock into the terminal which now just sits there displaying < waiting for any device >
Any idea where I go from here?
Click to expand...
Click to collapse
your device isn't picked up by fastboot ...first of all install the very latest version of adb ...using the usual Ubuntu story
sudo apt-get install adb
sudo apt-get upgrade
sudo apt-get update
sudo reboot
then switch on your device
go to /settings/about/buildnumber
click until developer settings are enabled
go to developer settings
toggle oem unlock to on
toggle adb to on
WITHOUT SWITCHING OFF
connect device to pc/laptop with original orange wileyfox cable
now your Ubuntu machine
must install drivers and Mount the phone so it should appear as a mounted volume on desktop
now open a terminal
now run the following :
sudo adb
sudo adb devices
now look on your phone and pull down the notification shadse ..make sure you have adb connected and file transfer mode ..if not change from charge to file transfer ...
there should be a pop up window on phone screen asking for permission for adb ..select allways allow and give pernission / authorization ..
now in terminal run adb devices and it should return some value as connected device
run:
adb reboot bootloader
phone will reboot to bootloader
run:
fastboot oem unlock
*use volume up to select yes
**beware will erase DATA ...
***if it doesn't work and adb and fastboot doesn't detect your device it is a driver problem but i haven't used Ubuntu in ages so can't remember steps to update your drivers other than updating the whole adb package
****some ubuntu instructions might be a little off as I've explained previously it's been a while
*****your waiting for device means
-adb service didn't start
+try "sudo adb"
-adb drivers out of date
+try sudo apt-get update
-adb on device not toggled to on
+toggle adb in dev settings
*adb authorization not given **should still see unauthorized device
-bad usb cable
+try another usb cable
-bad usb port
+try a different usb port
_____for clarity double check Ubuntu adb instructions and commands but this should put you on the right track____
---------- Post added at 08:30 AM ---------- Previous post was at 08:19 AM ----------
reggiexp said:
got damit i never understand how to flash twrp i followed what google said.
fastboot flash recovery XXX.img it does its thing i reboot still no recovery im on stock cm12 ? i think or cm13 android 6.0)
Click to expand...
Click to collapse
don't reboot immediately ..stock recovery will be flashed back over twrp
*i assume you know how to get to fastboot
adb reboot bootloader
fastboot oem unlock
*volume up for yes
fastboot flash recovery recovery.img
*make sure you have a copy of twrp called recovery.img in adb folder
when it says sending...
then is says writing ...
then it says done
DON'T REBOOT
UNPLUG USB
***MANUALLY BOOT TO BOOTLOADER USING VOLUME UP AND POWER
**** IN BOOTLOADER SELECT "RECOVERY"
you should then just wait on wileyfox first time it takes a minute or two don't know why then
it should boot to twrp
***you can take stock boot.img and patch it with magisk
-use: fastboot flash boot boot.img
-then you will have magisk and rooted
-using twrp apk or something like root rasher or flasher ..give apk root permission
-download twrp ..flash with apk from inside system ..after flashing select yes to reboot directly to recovery

Thanks very much, I've unlocked my bootloader now! Onto the TWRP, Magisk and LineageOS business now

bl91 said:
Thanks very much, I've unlocked my bootloader now! Onto the TWRP, Magisk and LineageOS business now
Click to expand...
Click to collapse
okay no problem
*i know everybody likes lineage and its usually more stable and the base for many custom roms
however just my 2cents worth ...i tried all the roms for our device ..but the by far the best for me was following the tutorial on how to make our device treble compatible ..
Then ...after 3-4 months of trying different treble GSI's i have stopped on Viper Official Pie 64bit A-only treble system.img ... at least give it a try after trying out lineageOs ..
you might thank me .

I can't get my device to show up usb debugging is on, Advanced Reboot', 'OEM Unlocking' etc. I've been trying for hours and hours. It shows up to transfer files if I want that mode so my PC is recognising it, but it doesn't seem to have drivers for adb. I've tried installing google usb drivers and also this: https://afterthoughtsoftware.com/posts/using-adb-with-wileyfox-swift
sorry if I haven't explained clearly, I'm just so sleepy from going around in circles. :|
I've rooted phones before and never had this issue. please can anybody help?
edit: have fixed I think! did two things at once so not sure which. I revoked usb devices so that my computer would have to ask permission again to connect (or something like this) and also clicked a thing on my PC to allow it to update what I think said driver icons automatically, which I wouldn't have thought would help, but it seemed to find the adb driver this time. I'd probably make more sense if it weren't 1am. :|

When i got my Swift 2 X, it came updated with 8.1 Oreo out of the box and the issue I had was unlocking the bootloader.
Sure fastboot oem unlock unlocked so I could flash recovery and roms but whenever I tried flashing a bootloader via fastboot, it gave me "FAILED (remote: Critical partition flashing is not allowed)". So that part was still locked.
This I fixed way back after searching around on my own about it but since the solution to this aint mentioned around here and I can't be the only one who have encountered this I think, I am just gonna add it in here.
There are now other commands to unlock your device, fastboot flashing unlock that does the exact same thing that fastboot oem unlock does and fastboot flashing unlock_critical is the command that unlocks the bootloader.
Both commands prompts you with the usual to confirm unlock and wipes your data.
It doesn't matter if you already unlocked the device with the oem command or flashing command, fastboot flashing unlock_critical should be able to unlock the bootloader either way.

My swift was also at 8.1 I had no problem unlocking the bootloader.
DH
RavZ75 said:
When i got my Swift 2 X, it came updated with 8.1 Oreo out of the box and the issue I had was unlocking the bootloader.
Sure fastboot oem unlock unlocked so I could flash recovery and roms but whenever I tried flashing a bootloader via fastboot, it gave me "FAILED (remote: Critical partition flashing is not allowed)". So that part was still locked.
This I fixed way back after searching around on my own about it but since the solution to this aint mentioned around here and I can't be the only one who have encountered this I think, I am just gonna add it in here.
There are now other commands to unlock your device, fastboot flashing unlock that does the exact same thing that fastboot oem unlock does and fastboot flashing unlock_critical is the command that unlocks the bootloader.
Both commands prompts you with the usual to confirm unlock and wipes your data.
It doesn't matter if you already unlocked the device with the oem command or flashing command, fastboot flashing unlock_critical should be able to unlock the bootloader either way.
Click to expand...
Click to collapse

bubba_66 said:
My swift was also at 8.1 I had no problem unlocking the bootloader.
DH
Click to expand...
Click to collapse
Doesn't seem that many who have this lock on their bootloaders, the only ones I could find here who had locked bootloaders the same way as I had are in the LineageOS 14.1 thread.
So at least I am not alone with that but sure makes me wonder how it is so for some while others not.

After unlock bootloader Everytime reboot always like this https://ibb.co/NSZR818

How to Stock FW and Relock Bootloader? OP5

Hi all,
I've wanted to go back to Stock OS but when i type "fastboot oem lock" it says "FAILED <remote: Flashing Lock is not allowed."
Everything boots normally to OS 4.5.2. In DEV options the Unlock Bootloader is greyed out and says bootloader is already unlocked.
What can i do?
Cheers

These instructions did work for me with the OnePlus 3/3T. They should also work for the OnePlus5, just make sure that you download the OnePlus5 version of the software and recovery.
https://forums.oneplus.net/threads/...-3-3t-and-go-back-completely-to-stock.456232/
Use this link for the stock recovery: https://forum.xda-developers.com/showpost.php?p=72748921&postcount=5

reayard said:
These instructions did work for me with the OnePlus 3/3T. They should also work for the OnePlus5, just make sure that you download the OnePlus5 version of the software and recovery.
https://forums.oneplus.net/threads/...-3-3t-and-go-back-completely-to-stock.456232/
Use this link for the stock recovery: https://forum.xda-developers.com/showpost.php?p=72748921&postcount=5
Click to expand...
Click to collapse
Hi i tried but does the same when i get to fastboot oem lock (it says Flashing Lock is not allowed).

r1card0amr said:
Hi i tried but does the same when i get to fastboot oem lock (it says Flashing Lock is not allowed).
Click to expand...
Click to collapse
Thanks I asked the same question earlier glad u tried it..I want to make sure we can relock it before I get the phone. Did u enable oem unlocking in the developer options before doing a fastboot oem lock? Also, make sure you are on stock everything including recovery..

mohan_kr said:
Thanks I asked the same question earlier glad u tried it..I want to make sure we can relock it before I get the phone. Did u enable oem unlocking in the developer options before doing a fastboot oem lock? Also, make sure you are on stock everything including recovery..
Click to expand...
Click to collapse
Hello. I first thing I do always is to install drivers. I start by connecting the phone to the laptop in charge mode, then in transfer files mode, MTP or camera. In this way he will recognise all the drivers your laptop needs.
Also I enter in fastboot mode and recovery so the laptop can recognise the drivers and always reboot laptop and phone just to double check.
What I did was: go to Developer Options and enabled Unlock Bootloader and USB Debugging.
Then I accepted the laptop request on my phone and all drives were OK.
I run CMD and typed fastboot devices to see if it recognises my phone and it displayed a serial number. So I proceed next to type fastboot oem unlock and the process went OK and on my phone it asked Yes or No to unlock and I choose yes.
Then I flash a twrp image by typing on CMD: fastboot flash recovery recovery.img (my twrp I'm had other name so I rename it. You need to enable "Show file extensions" in Windows so you can see what the extension is).
I then type fastboot boot recovery.img and the phone entered in Recovery Mode in this case TWRP.
My phone was always connected to the laptop and he open the internal storage window so I drag the supersu inside.
Then on TWRP I wiped dalvik and cache and I went to Install and installed the SupeSU on my internal memory root.
The phone then rebooted and ready to go.
But then I went to developer options and the Unlock bootloader was greyed out. I unroot my phone and flashed a stock recovery for OP5 and the stock image 4.5.2 and when I type fastboot oem lock it always says it can't be flashed.
I need to stock it since I'm giving to a family member and they don't understand much about phones and If there's a problem the warranty doesn't cover.
Just installed supersu to try an app. I never install 3rd party roms.

r1card0amr said:
I need to stock it since I'm giving to a family member and they don't understand much about phones and If there's a problem the warranty doesn't cover.
Click to expand...
Click to collapse
the warranty is not voided with unlocked bootloader..
https://oneplus.net/hk/support/answer/will-rooting-or-unlocking-the-bootloader-void-my-warranty

I found now that if i take pictures or screenshots the Album Folder is empty. I think my phone is bricked. Hence i can't lock the bootloader.

r1card0amr said:
I found now that if i take pictures or screenshots the Album Folder is empty. I think my phone is bricked. Hence i can't lock the bootloader.
Click to expand...
Click to collapse
if your phones boots its not bricked... My guess is that you data is corrupted, i would wipe everything including userdata en reflashing the stock with recovery.

Hogyoku said:
if your phones boots its not bricked... My guess is that you data is corrupted, i would wipe everything including userdata en reflashing the stock with recovery.
Click to expand...
Click to collapse
Hi right before your comment i managed lol.
I re-flash the stock recovery and in recovery i reset and wipe everything. then i install the OS4.5.3 by ADB Sideload and it's working now.
Just wanted to get rid of the inital warning that my bootloader is unlocked. I want to lock again.

I rooted my device with Magisk, and now I want to restore it to factory state.
I flashed stock recovery and OOS several times, wiped everything but fastboot oem lock failed all times (FAILED (remote: Flashing Lock is not allowed)).
Can you help me?
What should I do to relock bootloader?

here is your solution
r1card0amr said:
Hi right before your comment i managed lol.
I re-flash the stock recovery and in recovery i reset and wipe everything. then i install the OS4.5.3 by ADB Sideload and it's working now.
Just wanted to get rid of the inital warning that my bootloader is unlocked. I want to lock again.
Click to expand...
Click to collapse
here in this video u can see in detail how to lock bootloader. hope this help you
https://www.youtube.com/watch?v=CQYCSdDUdAU

HOW TO RELOCK..
Install TWRP and Magisk if you don't have them yet.
Magisk should allow you to slide "OEM unlocking" to "enabled"
Reboot to fastboot
Flash stock recovery via fastboot.
Run locking via fastboot flashing lock
Allow it to reboot and upon start up it will say device corrupted (THIS IS NORMAL)
Boot to recovery via the warning start screen.
Once in recovery, sideload latest FW.
Profit.

I usually do it this way (successfully):
Wipe everything but OTG in TWRP
Format data
Reboot to TWRP
Flash the full stock OOS zip
Reboot to fastboot
Flash stock recovery
Lock bootloader with the fastboot lock command

Has anyone made any progress with this? I too am having the issue as described and have tried the solution by Ricyksydhu, along with solutions from various other places around the net.

Blu R1 HD Unlock bootloader, install TWRP, and root (Non prime)

Note: This guide if for the non Prime variant of the Blu R1 HD running android 6.0. It will also factory reset your device
Before you start: make sure usb debugging is enabled by going to settings-about phone scroll down to build number and tap it until it says you are a developer. Then just go into developer settings, find usb debugging, and click enable.
1: go to http://bit.ly/2rYeWVh on your phone and download the zip
2: The first thing you will need to do is install Adb and fastboot on your computer from here: https://forum.xda-developers.com/showthread.php?t=2588979
3: Once you have it installed, find the folder it installed into (usually either in c:/adb or in your downloads), and double click the Runme.bat
4: Once you're in the shell, run
Code:
adb reboot bootloader
this should boot your phone into its bootloader
5: Wait until your phone is in the bootloader (it should say something like "fastboot..."), and then run
Code:
fastboot oem unlock
This will unlock the bootloader and reset the phone. The process may take a few minutes to complete
6: Now that your bootloader is unlocked, you will need to install TWRP custom recovery. Since there isn't an official build for the BLU R1 HD, we will use a custom one. download from bit.ly/2BBJ8rp (original link was long) then place the recovery.img into your adb folder
7: then flash the recovery with
Code:
fastboot flash recovery recovery.img
replace recovery.img with the name of the file if it is something different this should take about a minute to install.
8: once you have TWRP installed you can root. In the TWRP menu click install, then select the SupeSU zip you downloaded previously. Once that has installed you should be rooted
Please post questions below!

lil chickenz said:
Note: This guide if for the non Prime variant of the Blu R1 HD running android 6.0. It will also factory reset your device
Before you start: make sure usb debugging is enabled by going to settings-about phone scroll down to build number and tap it until it says you are a developer. Then just go into developer settings, find usb debugging, and click enable.
Also need to turn on "enable oem unlock" option in developer options
1: go to http://bit.ly/2rYeWVh on your phone and download the zip
A label for random downloads is advised
2: The first thing you will need to do is install Adb and fastboot on your computer from here: https://forum.xda-developers.com/showthread.php?t=2588979
3: Once you have it installed, find the folder it installed into (usually either in c:/adb or in your downloads), and double click the Runme.bat
4: Once you're in the shell, run
Code:
Adb reboot bootloader
this should boot your phone into its bootloader
Needs to be lowercase "adb"
5: Wait until your phone is in the bootloader (it should say something like "fastboot..."), and then run
Code:
fastboot OEM unlock
This will unlock the bootloader and reset the phone. The process may take a few minutes to complete
Needs to be lowercase "oem"
6: Now that your bootloader is unlocked, you will need to install TWRP custom recovery. Since there isn't an official build for the BLU R1 HD, we will use a custom one. download from bit.ly/2BBJ8rp (original link was long) then place the recovery.img into your adb folder
7: then flash the recovery with
Code:
fastboot flash recovery recovery.img
replace recovery.img with the name of the file if it is something different this should take about a minute to install.
8: once you have TWRP installed you can root. In the TWRP menu click install, then select the SupeSU zip you downloaded previously. Once that has installed you should be rooted
Please post questions below!
Click to expand...
Click to collapse
.
.
Your directions are incorrect and incomplete.
And not working for devices updated with OTA , because blue made changes to block the bootloader unlock option
And there are already multiple posts with this topic that are complete.

IDK that's just what I did for mine and none of the other tutorials we're were right for me so I wanted to share it if anyone else had the same problem. I bought my phone like three months ago though so the os should be recent. Any info I should share?
Also I could add the link text cuz I haven't posted enough

lil chickenz said:
IDK that's just what I did for mine and none of the other tutorials we're were right for me so I wanted to share it if anyone else had the same problem. I bought my phone like three months ago though so the os should be recent. Any info I should share?
Also I could add the link text cuz I haven't posted enough
Click to expand...
Click to collapse
I was little harsh with first response. sorry
your steps were incorrect just in the"case" used.
Interested in your custom build number. It is displayed on the "about phone" section of setiings.
And you were able to unlock without changing the "allow oem unlock" setting is curious.
did you get phone refurbished or used?

mrmazak said:
I was little harsh with first response. sorry
your steps were incorrect just in the"case" used.
Interested in your custom build number. It is displayed on the "about phone" section of setiings.
And you were able to unlock without changing the "allow oem unlock" setting is curious.
did you get phone refurbished or used?
Click to expand...
Click to collapse
Its fine
Build number: BLU_R0011UU_V21_GENERIC
build number date: 05-05-2017
Phone purchased at amazon.com/BLU-R1-Cell-Phone-16GB/dp/B01H2E0KVA/ref=sr_1_3?s=wireless&ie=UTF8&qid=1512256238&sr=1-3&keywords=blu+r1+hd
It was new
I might have actually turned on oem unlocking some time in the past because I remember seeing the option, but when I was actually trying to root the phone and unlock it the option wasn't actually there. I had also factory reset the phone recently before the root and unlock so that shouldn't have mattered anyway. But yah, I was like, theres no option to enable that, Ill just try it without and it worked. And it did. The odd thing is though when I go to settings and search oem the option for oem unlocking comes up for developer settings, but when I click it there is nothing there. (Hopefully that makes sense)

lil chickenz said:
Its fine
Build number: BLU_R0011UU_V21_GENERIC
build number date: 05-05-2017
Phone purchased at amazon.com/BLU-R1-Cell-Phone-16GB/dp/B01H2E0KVA/ref=sr_1_3?s=wireless&ie=UTF8&qid=1512256238&sr=1-3&keywords=blu+r1+hd
It was new
I might have actually turned on oem unlocking some time in the past because I remember seeing the option, but when I was actually trying to root the phone and unlock it the option wasn't actually there. I had also factory reset the phone recently before the root and unlock so that shouldn't have mattered anyway. But yah, I was like, theres no option to enable that, Ill just try it without and it worked. And it did. The odd thing is though when I go to settings and search oem the option for oem unlocking comes up for developer settings, but when I click it there is nothing there. (Hopefully that makes sense)
Click to expand...
Click to collapse
To get around this just find the previous version stock rom from the blu dev site and flash it first. I have never seen a OEM unlock menu blanked out if that is what you're trying to say, in this case amazon and blu teamed up and you should be able to restore to original version without the OTA.

Hard/soft brick

I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
A little progress, I was unable to unlock_critical but its still hanging here
https://imgur.com/a/IdZum

jAm-0 said:
I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
Click to expand...
Click to collapse
read through this and follow the steps should be good to go.
https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681
This is also very helpful
https://mata.readthedocs.io/en/latest/

That's the exact process I was going through, and it finally booted up.
The issue I was having was a bad usb connection which wouldn't allow me to unlock_critical.
SOLVED. Still no Magisk, we'll worry about that another time. 5hrs of troubleshooting is enough for one night.

https://imgur.com/a/ZiBzp
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed

SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed

jAm-0 said:
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed
Click to expand...
Click to collapse
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.

wolfu11 said:
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.
Click to expand...
Click to collapse
I realize all that, the issue is I cannot access any sort of recovery because I think my bootloader is defective.
For example from a cold restart if I press the power button for say 3 -5 seconds it wont boot, just boot to the Essential logo and loop. To get the phone to boot I have to hold the power down for 15-20 seconds while it bootloops a couple times then it'll boot.
Is there a possible way to reflash the bootloader software if it is defective? It's unlocked btw
There is a way to install magisk via fastboot with a patched_boot img which I'm working on. Cant seem to find the right boot img to patch for 8.1
PS Is it possible to flash .zips through fastboot? e.g. custom roms etc

Was finally able to get into recovery, so all is well. Thanks for the help yall

OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?

gimpy1 said:
OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?
Click to expand...
Click to collapse
It's really hard to say, my phone has a serious problem with it. sometimes I cant get it to boot, it will boot into the bootloader over and over and over. I've managed to get Lineage 15.1 on if for a bit until I tried to get back into the recovery which sent it manic.
I just got lucky I was able to get into TWRP and flash lineage.
my first issue not being able to flash the stock image via fastboot because I didn't unlock_critical which can sometimes fail when the usb connection is bad.
Currently flashing stock again if my phone will boot up. I'm not sure whats wrong with my bootloader but its causing a ton of havoc

My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!

katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
Same boat for me - just keep rebooting to show Powered by Android Screen and then reboot again and again. Was able to see my device using fastboot devices command but all attempts to access recory just repeat the bootloop entry. I would happily check the OEM UNLOCK option in dev settings but can't even get it to book to any OS to make that option happen. Still shows bootloader locked on bootloader screen - any help someone can suggest?

I had this problem tonight also. In my case I suspect it had to do with the install of magisk in which I checked both boxes and patched the bootloader. on reboot I was stuck on boot. Just wanted to add my solution. I got the pie back to stock zip here https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681 then I put it into the adb folder and ran the flashall.bat script. I tried the no wipe one and it saved my information. very happy I didnt have to resetup my phone in the end.

katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
I am in the same boat. I tried to re-install the OS, but because my USB debugging was not enabled, Fastboot worked but ADB would not and since I basically wiped the recovery area, my phone will only boot into Fastboot but will not allow any loading of recovery. I would pay for someone to help. This is so hard to figure out. I have contacted Essential but since my phone is over 12 months old, the warranty has expired.
Help please. It seems like such a waste to have a bricked phone.