Dear Esteemed XDA members,
I have spent literally days of testing and researching to try and unbrick my phone. Friends and family have seen my obsession with trying to fix this, some even offering to buy me a new phone!!!! But this ain't about money - this is about having control of my damn device!!! I'm usually pretty good with trying to solve this kind of stuff, but this time I'm truly stumped (and desperate, and obsessed!). I have come to the conclusion that it's directly related to ARM Trusted Firmware. Here are the details of my "journey" to date... please read it, and if you know how to fix it, please share!!! then I can get my life back!!!! Before I go any further, I am certain that my problem was initially triggered by doing an official update on a rooted phone. So to avoid experiencing the same problem I'm about to describe, it's best to unroot and relock your device before loading new official firmware.
I have a Huawei Honor 4x (Che2-UL00, with Kirin 620 chipset) with an unlocked bootloader. Recently, I tried to manually upgrade from Kitkat (emui3.0) to Lollipop (emui3.1), using the official update.app from huawei's website (image was good - I checked the hash). To load the update.app, I used the official huawei recovery. The progress bar went to roughly 90% and then hung. Upon restarting my phone, it went into rescue mode with the following error: Func NO : 15 (bl31 image) Error NO : 1 (security verify failed).
Interestingly, I looked closely at the fastboot.img files for kitkat Vs lollipop (I got the image files by using HuaweiUpdateExtractor). I noticed that only the lollipop fastboot image contains this error message text. Also, bl31 is related to ARM trusted firmware, for more info search for BL31 (Secure Monitor) on google, or see bl31_main.c in the Trusted Firmware source code. So it seems that the lollipop image is using the full ARM trusted firmware, an extra layer of security which is preventing the (unlocked) bootloader from allowing me to load into recovery. I think this is the core problem, and I think there is a way to solve it but I just don't have a deep enough understanding to get there. Below I'll explain each step I went though and provide some additional diagnostic info:
1. First step was to access recovery mode (Vol UP + power). This failed and resulted in same bl31 error message.
2. Second step was to try and update again using the three-button force update (Vol Up + Vol Down + Power). It vibrates once after a few seconds, and freezes with the logo screen with the red light flashing. As an experiment, I tried this without the SDCARD and noticed it vibrated almost instantly, which suggests that it does try to load something from the SDCARD when inserted. I didn't get any further in this mode.
3. Final step I tried was to load into fastboot (Vol Down + Power). This worked and I got into a special "Rescue&Fastboot" mode. First thing I tried was to manually downgrade to kitkat by flashing the kitkat images using the fastboot flash command. The images boot.img, system.img, recovery.img flashed successfully. cust.img simply failed. I desperately wanted to flash the kitkat fastboot.img which doesn't contain the trusted firmware bl31 image stuff, but fastboot replied: FAILED (remote: Command not allowed). In fact, many of the fastboot commands fail with this same error message, even though there is the "PHONE unlocked" writing in red on my phone screen. With the limited command set available (even fastboot oem device-info is not allowed!), here is the diagnostic info I was able to get:
a) fastboot oem check-rootinfo
(bootloader) old_stat: RISK
(bootloader) now_stat: SAFE
(bootloader) change_time: 1452356543
I think this change from RISK to SAFE is the core of my problem. the change_time is from several days ago when I attempted to update. I think it reflects the trusted firmware state (I'm guessing here, as I can't find documentation for these commands).
b) fastboot oem backdoor info
(bootloader) FB LockState: LOCKED
(bootloader) USER LockState: UNLOCKED
I think that FB LockState: LOCKED means that fastboot is locked (guessing again, can't find documentation!), which explains why many of the commands fail.
c) fastboot oem check-image
(bootloader) secure image verify successfully
I think this checks the recovery image, because when I flash a different recovery, this signature check fails
d) fastboot getvar rescue_phoneinfo
rescue_phoneinfo: Che2-UL00 V100R001CHNC00B365
This appears to be the ROM version at the time of purchase.
e) fastboot oem get-build-number
(bootloader): Che2-UL00 V100R001CHNC00B384
This actually corresponds to the build number of kitkat I was using just before the failed upgrade to lollipop.
f) fastboot oem relock mycode
FAILED (remote: root type not allowed).
I tried this just to see if it wold relock. I'm not sure what the error means, but I do not that this command failed with signature verify fail if i change the recovery image.
Here are the questions I want to ask:
1. Can I force the device to flash a new image? I can't get into recovery or have full access to fastboot commands due to the trusted firmware stuff. And as I mentioned earlier the three button trick fails with a freeze at the logo screen. It appears that I need to do this using a means other than fastboot. The only interface I have is Android Sooner ADB Interface. adb devices renders nothing. Only fastboot finds a device.
2. Can I somehow make the "security verify check" pass so that I don't get that bl31 error? I'm not sure exactly which images this bl31 thing is trying to verify! Perhaps some combination of images from the new lollipop stuff I tried to flash and the kitkat build I had running previously?
3. Can somehow disable all this Trusted Firmware stuff??
4. Any other suggestions???
This is driving me to the brink on insanity!!! Gotta figure it out!! Thanks for reading and trying to help!
Hi,
Did anyone solve this problem?
I'm facing the exact same situation.
Che2-UL00 too.
Thanks in advance!
prezident36 said:
Hi,
Did anyone solve this problem?
I'm facing the exact same situation.
Che2-UL00 too.
Thanks in advance!
Click to expand...
Click to collapse
I still find it hard to believe this problem absolutely cannot be solved. However, I took it to a Huawei service center and they weren't able to unbrick it either. They had to replace the mainboard, which seems like a complete waste. Cost around $50, so not the end of the world but still annoying.
Anyway, screw this whole "trusted firmware" rubbish. I'm the owner of the device, yet I'm not "trusted".
hello, i have exactly the same problem!
---------- Post added at 10:58 PM ---------- Previous post was at 10:41 PM ----------
Where do i get the replacement mainboard from?
Me too, upgrading kitkat to lollipop. Now facing that rescue error.
My Honor 4X is unlock bootloader and root before upgrading lollipop,
Im on the Oct 1 security update.
I ran the Nokia unlock apt I side loaded. There app gives me a error message of device not supported.
When I got into Developer Options turn on OEM unlocking Allow the boot loader to be unlocked I still get the message Device not supported, When I run there app
I know the boot loader is still locked because when I try to flash TWRP recovery I get this message
fastboot boot twrp.img
Sending 'boot.img' (38732 KB) OKAY [ 0.902s]
Booting FAILED (remote: 'unlock device to use this command')
fastboot: error: Command failed
So it very much seems like the boot loader is still locked.
Any suggestion thanks
raven.warsong said:
Im on the Oct 1 security update.
I ran the Nokia unlock apt I side loaded. There app gives me a error message of device not supported.
When I got into Developer Options turn on OEM unlocking Allow the boot loader to be unlocked I still get the message Device not supported, When I run there app
I know the boot loader is still locked because when I try to flash TWRP recovery I get this message
fastboot boot twrp.img
Sending 'boot.img' (38732 KB) OKAY [ 0.902s]
Booting FAILED (remote: 'unlock device to use this command')
fastboot: error: Command failed
So it very much seems like the boot loader is still locked.
Any suggestion thanks
Click to expand...
Click to collapse
Sigh,
1. There is absolutely no official bootloader unlock for this phone.
2. Though there is no official bootloader unlock, you can still Bloader unlock your phone using a paid service by TechMesto @Singhsk ...
usernamedoesnotexist said:
Sigh,
1. There is absolutely no official bootloader unlock for this phone.
2. Though there is no official bootloader unlock, you can still Bloader unlock your phone using a paid service by TechMesto @Singhsk ...
Click to expand...
Click to collapse
I did see a tread about that thanks for the info.
my guess is its most likely not worth doing I dont see very many roms listed for the phone.
I guess its not very popular for that reason. Its a shame it seems like a nice phone. But the market is flooded with phones I dont see any thing that makes this one stand out
thanks for answer my question
raven.warsong said:
I did see a tread about that thanks for the info.
my guess is its most likely not worth doing I dont see very many roms listed for the phone.
I guess its not very popular for that reason. Its a shame it seems like a nice phone. But the market is flooded with phones I dont see any thing that makes this one stand out
thanks for answer my question
Click to expand...
Click to collapse
Yeah, not much dev for this device. Probably because of no official bootloader unlocks and popularity of the device.
I followed the instructions here to unlock the A3 bootloader and these instructions to install TWRP and Magisk.
After toying around with things, losing Google Play certification and having push notifications in doze/app standby mode stop working, I decided to revert things back to stock and relock the bootloader.
Before modifying things, my phone was running the EU ROM with the November security patch: V10.3.12.0.PFQEUXM. I went here and downloaded the stock image archive for that version.
I use Linux, so I ran the flash_all_lock.sh script and everything seemed to work without any issues. There were no error messages and all the images seemed to be flashed successfully. At the end of the steps, the script locked the bootloader and the phone rebooted. It then showed the Android One logo for a second then immediately went into fastboot mode. I rebooted it again and this cycle repeated. If I tell fastboot to continue, I get this error:
Code:
$ fastboot continue
resuming boot...
FAILED (remote: Failed to load image from partition: Load Error)
finished. total time: 0.001s
I tried to reflash the images again, but I understandably get an error because the bootloader is locked now. Naturally, I tried to run the fastboot commands to unlock it again, but that also fails, presumably because I can't boot into the OS to toggle the developer option's "Allow OEM unlocking" switch:
Code:
$ fastboot flashing unlock
...
FAILED (remote: Flashing Unlock is not allowed
)
finished. total time: 0.000s
At this stage, I throw up my hands in failure and presume the device is now totally bricked. After taking a few days to relax about it, I figured I would ask on here if anyone has any thoughts that could help. I fully expect the handset to need replaced and will accept the responsibility for breaking it, although I don't know how I managed to break it.
Is there some way to unlock the bootloader now when I'm not able to actually boot into Android to toggle the option to allow unlocking it? Is the device just FUBAR at this stage? I feel like there would be some way to fix this, but I'm at a loss as to how without some help.
dephekt said:
I followed the instructions here to unlock the A3 bootloader and these instructions to install TWRP and Magisk.
After toying around with things, losing Google Play certification and having push notifications in doze/app standby mode stop working, I decided to revert things back to stock and relock the bootloader.
Before modifying things, my phone was running the EU ROM with the November security patch: V10.3.12.0.PFQEUXM. I went here and downloaded the stock image archive for that version.
I use Linux, so I ran the flash_all_lock.sh script and everything seemed to work without any issues. There were no error messages and all the images seemed to be flashed successfully. At the end of the steps, the script locked the bootloader and the phone rebooted. It then showed the Android One logo for a second then immediately went into fastboot mode. I rebooted it again and this cycle repeated. If I tell fastboot to continue, I get this error:
Code:
$ fastboot continue
resuming boot...
FAILED (remote: Failed to load image from partition: Load Error)
finished. total time: 0.001s
I tried to reflash the images again, but I understandably get an error because the bootloader is locked now. Naturally, I tried to run the fastboot commands to unlock it again, but that also fails, presumably because I can't boot into the OS to toggle the developer option's "Allow OEM unlocking" switch:
Code:
$ fastboot flashing unlock
...
FAILED (remote: Flashing Unlock is not allowed
)
finished. total time: 0.000s
At this stage, I throw up my hands in failure and presume the device is now totally bricked. After taking a few days to relax about it, I figured I would ask on here if anyone has any thoughts that could help. I fully expect the handset to need replaced and will accept the responsibility for breaking it, although I don't know how I managed to break it.
Is there some way to unlock the bootloader now when I'm not able to actually boot into Android to toggle the option to allow unlocking it? Is the device just FUBAR at this stage? I feel like there would be some way to fix this, but I'm at a loss as to how without some help.
Click to expand...
Click to collapse
I am new to this, my phone also seemed unusable and with the application "miflash" through windows, I put the official rom and came back to life.
It also happened to me that I had to change the USB port on the PC so that it didn't fail me ...
(I am using a translator)
marceloariel said:
I am new to this, my phone also seemed unusable and with the application "miflash" through windows, I put the official rom and came back to life.
It also happened to me that I had to change the USB port on the PC so that it didn't fail me ...
(I am using a translator)
Click to expand...
Click to collapse
Thanks for the reply. I actually tried this as well but it did not work. MiFlash just appears to be running the flash_all_lock.bat script on Windows and it failed because the bootloader was not already unlocked according to its debug logs when I ran it. I should have mentioned that above.
Not sure if it will help but did you try a factory reset?
Press and hold the Power+Volume Down buttons untill you see the android with the no command. Press and hold the Power button. Press and release the Volume Up button once then release the Power button. Then you should see some recovery options.
In can't get the phone to boot into recovery. Holding power and volume down just speedily reboots the phone into fastboot over and over. Using the volume up button instead just reboots the phone very fast. I never see the no command android.
dephekt said:
I followed the instructions here to unlock the A3 bootloader and these instructions to install TWRP and Magisk.
After toying around with things, losing Google Play certification and having push notifications in doze/app standby mode stop working, I decided to revert things back to stock and relock the bootloader.
Before modifying things, my phone was running the EU ROM with the November security patch: V10.3.12.0.PFQEUXM. I went here and downloaded the stock image archive for that version.
I use Linux, so I ran the flash_all_lock.sh script and everything seemed to work without any issues. There were no error messages and all the images seemed to be flashed successfully. At the end of the steps, the script locked the bootloader and the phone rebooted. It then showed the Android One logo for a second then immediately went into fastboot mode. I rebooted it again and this cycle repeated. If I tell fastboot to continue, I get this error:
Code:
$ fastboot continue
resuming boot...
FAILED (remote: Failed to load image from partition: Load Error)
finished. total time: 0.001s
I tried to reflash the images again, but I understandably get an error because the bootloader is locked now. Naturally, I tried to run the fastboot commands to unlock it again, but that also fails, presumably because I can't boot into the OS to toggle the developer option's "Allow OEM unlocking" switch:
Code:
$ fastboot flashing unlock
...
FAILED (remote: Flashing Unlock is not allowed
)
finished. total time: 0.000s
At this stage, I throw up my hands in failure and presume the device is now totally bricked. After taking a few days to relax about it, I figured I would ask on here if anyone has any thoughts that could help. I fully expect the handset to need replaced and will accept the responsibility for breaking it, although I don't know how I managed to break it.
Is there some way to unlock the bootloader now when I'm not able to actually boot into Android to toggle the option to allow unlocking it? Is the device just FUBAR at this stage? I feel like there would be some way to fix this, but I'm at a loss as to how without some help.
Click to expand...
Click to collapse
Try
Code:
$ fastboot set_active a
. This is an issue with the flashing script. Before the line fastboot $* flashing lock command it should have fastboot $* set_active a. Your phone is not booting to system partition because the bootloader wasn't told which partition (a/b) to boot from.
sensig said:
Try
Code:
$ fastboot set_active a
. This is an issue with the flashing script. Before the line fastboot $* flashing lock command it should have fastboot $* set_active a. Your phone is not booting to system partition because the bootloader wasn't told which partition (a/b) to boot from.
Click to expand...
Click to collapse
The issue is caused by fastboot rom containing dummy system_b image and flashing script "forgetting" to force partition A as active. If a phone has B as an active partition and someone uses flash_all_lock.bat script, the phone's screwed. No idea what brought Xiaomi to this "brilliant" idea, not only there is a higher chance to brick the phone, but the zip file is also unnecessarily larger.
With locked bootloader it isn't possible to switch active partition anymore, so the phone is a (semi)brick. EDL mode is usually used to reflash locked bootloaders.
Idk, but I was flashing stock again after failed attemp to flash pixel experiance.Partition was set to B, after flash it wont boot, but I dont know why fastboot set_active b wouldnt work so I had to flash TWRP get into twrp set partitoin to A and flash stock rom again. Try that
debilinkredibile said:
Idk, but I was flashing stock again after failed attemp to flash pixel experiance.Partition was set to B, after flash it wont boot, but I dont know why fastboot set_active b wouldnt work so I had to flash TWRP get into twrp set partitoin to A and flash stock rom again. Try that
Click to expand...
Click to collapse
There are two commands for setting active partition, depending on the fastboot version. It's either old
fastboot set_active a
or newer
fastboot --set-active=a
debilinkredibile said:
Idk, but I was flashing stock again after failed attemp to flash pixel experiance.Partition was set to B, after flash it wont boot, but I dont know why fastboot set_active b wouldnt work so I had to flash TWRP get into twrp set partitoin to A and flash stock rom again. Try that
Click to expand...
Click to collapse
if you open flashing script file (.bat or .sh) in a text editor, you will see that fastboot is flashing system.img to system_a partition and system_other.img to system_b partition. That system_other.img is a dummy image and is not bootable. You either:
Option 1: Set active partition to A before running any stock flashing script.
Option 2: Replace system_other.img to system.img in the script.
Option 3: Force partition A after flashing userdata.img and before any lock or reboot command.
dephekt said:
In can't get the phone to boot into recovery. Holding power and volume down just speedily reboots the phone into fastboot over and over. Using the volume up button instead just reboots the phone very fast. I never see the no command android.
Click to expand...
Click to collapse
I am in the same exact position with my Mi A3... did you ever resolve this and if so how?
mewcatchew said:
I am in the same exact position with my Mi A3...
Click to expand...
Click to collapse
What causes led to this behavior ?
htn711 said:
What causes led to this behavior ?
Click to expand...
Click to collapse
Stock rom was flashed in slot B instead of A and "flash all lock option" was checked off in mi flash (default setting). If I didnt know any better i'd think Xiaomi does this on purpose. I will never buy another Xiaomi.
mewcatchew said:
Stock rom was flashed in slot B instead of A and "flash all lock option" was checked off in mi flash (default setting). If I didnt know any better i'd think Xiaomi does this on purpose. I will never buy another Xiaomi.
Click to expand...
Click to collapse
You can't blame xiaomi for your negligence.
If you don't know what you are doing then either don't do it or ask people here on the forums or do some research yourself.
Of course xiaomi are going to have the flash all lock option enabled by default because the only time people would really use mi flash is to completely revert back to stock.
All information on miflash online will tell you make slot a active slot before flashing in mi flash.
Most manufacturers are the same nowadays anyway it's not just xiaomi.
All relevant information is there you just didn't read it/weren't careful when you flashed.
Don't ever be afraid to ask a question here on the forums if your not sure, you will get help even if you think the question is too noob or stupid.
You can always try get your system up and going through edl mode but you will need someone with a verified xiaomi account to help you.
Always read the relevant information before trying anything on your device.
To say you won't buy xiaomi again is silly seeing as it was a mistake on your behalf, "I cut my finger so that means all knives are crap" is kinda how it sounds
mewcatchew said:
Stock rom was flashed in slot B instead of A and "flash all lock option" was checked off in mi flash (default setting).
Click to expand...
Click to collapse
Due to the fact that i am a beginner in this business i also had my first encounter with the locked situation.
Did you read this: https://forum.xda-developers.com/showpost.php?p=81533691&postcount=22
...like garylawwd mentioned read/understand what you are doing BEFORE you do it.
After playing around with this device and read nearly everything about this topic here at xda i can say:
everything you need to know is here.
garylawwd said:
You can't blame xiaomi for your negligence.
If you don't know what you are doing then either don't do it or ask people here on the forums or do some research yourself.
Of course xiaomi are going to have the flash all lock option enabled by default because the only time people would really use mi flash is to completely revert back to stock.
All information on miflash online will tell you make slot a active slot before flashing in mi flash.
Most manufacturers are the same nowadays anyway it's not just xiaomi.
All relevant information is there you just didn't read it/weren't careful when you flashed.
Don't ever be afraid to ask a question here on the forums if your not sure, you will get help even if you think the question is too noob or stupid.
You can always try get your system up and going through edl mode but you will need someone with a verified xiaomi account to help you.
Always read the relevant information before trying anything on your device.
To say you won't buy xiaomi again is silly seeing as it was a mistake on your behalf, "I cut my finger so that means all knives are crap" is kinda how it sounds
Click to expand...
Click to collapse
Theres always a fanboy in the crowd. Whoever programmed the batch file at Xiaomi made an error on wich slot it shouldve been flashed to. I've flashed devices a 100 times and never had an issue like this until i got a Xiaomi.
Now did I miss I needed to be on slot A? Yes I did. Still its Xiaomi's error for releasing botched firmware. How exactly do I find someone with EDL authorized account in US? If you have one, or if you can point me to someone who has one i'd be happy as a clam.
As a side note, my mother is from Cork.
---------- Post added at 02:40 PM ---------- Previous post was at 02:30 PM ----------
htn711 said:
Due to the fact that i am a beginner in this business i also had my first encounter with the locked situation.
Did you read this: https://forum.xda-developers.com/showpost.php?p=81533691&postcount=22
...like garylawwd mentioned read/understand what you are doing BEFORE you do it.
After playing around with this device and read nearly everything about this topic here at xda i can say:
everything you need to know is here.
Click to expand...
Click to collapse
Did you read my posts? I get "locked state error" with fastboot commands. I can reboot bootlader in fastboot, and it tjust reboots into fastboot - thats just about all i can do. It wont let me change anything, can only get info and reboot...
mewcatchew said:
Theres always a fanboy in the crowd. Whoever programmed the batch file at Xiaomi made an error on wich slot it shouldve been flashed to. I've flashed devices a 100 times and never had an issue like this until i got a Xiaomi.
Now did I miss I needed to be on slot A? Yes I did. Still its Xiaomi's error for releasing botched firmware. How exactly do I find someone with EDL authorized account in US? If you have one, or if you can point me to someone who has one i'd be happy as a clam.
As a side note, my mother is from Cork.
Click to expand...
Click to collapse
Not a fanboy by any stretch of the imagination I just don't see it as an error on there behalf. They gave all relevant information on how to flash.
Someone already pointed out in a different thread of a guy that has the account here on XDA but I can't remember where I seen it. @_mysiak_ can you please let this guy know who has the verified mi account.
I hope you can get your device up and going and I do understand how frustrating this must be but it is fixable.
Hey maybe you can come visit Ireland with your mother and we can sort out the device then :laugh: joke
garylawwd said:
Not a fanboy by any stretch of the imagination I just don't see it as an error on there behalf. They gave all relevant information on how to flash.
Someone already pointed out in a different thread of a guy that has the account here on XDA but I can't remember where I seen it. @_mysiak_ can you please let this guy know who has the verified mi account.
I hope you can get your device up and going and I do understand how frustrating this must be but it is fixable.
Hey maybe you can come visit Ireland with your mother and we can sort out the device then :laugh: joke
Click to expand...
Click to collapse
mysiak did message me and I messaged the guy he pointed me to, havent gotten a response. Also pointed to a russian site that i dont trust.
mewcatchew said:
mysiak did message me and I messaged the guy he pointed me to, havent gotten a response. Also pointed to a russian site that i dont trust.
Click to expand...
Click to collapse
Ya I wouldn't go trusting some random Russian site either. I don't think there is anything you can do without either
A) going into edl and using a verified mi account
B) bringing it to a service centre (which nobody wants to do)
In fastboot you can't get any commands to work now right? Your device is fully locked again?
mewcatchew said:
mysiak did message me and I messaged the guy he pointed me to, havent gotten a response. Also pointed to a russian site that i dont trust.
Click to expand...
Click to collapse
That Russian site is run by the XDA guy from what I understood. There are other paid services which have Xiaomi service accounts, I only pointed you to the cheapest "verified" eshop. Just Google another one if you don't trust Russians. All of them will need to connect to your PC over Teamviewer and do the flashing, you will just follow the instructions (connect the phone, reboot it etc.).
Good morning,
I'm trying to root this Huawuei Y6 II 2017 l_21 factory resetted but it's becoming very very hard, cause i've try every single method and nothing work.
The device is debug USB and OEM unlocked, and even bootloader unlocked and FRP unlock.
I've installed USB drivers on my window 7 ( and some of them didn't install correctly ).
The device connected correctly to hi suite but it's full upgraded android 6 emui 4.1.x.x Kirin620
-I've tried kingoroot both pc and apk
-I've tried Manual rooting with mini adb and fastboot plus TWRP 3.0.2 of this guide ( https://forum.xda-developers.com/android/general/rooting-huawei-y6-ii-cam-l21-t3501162 ) and TWRP 3.1.1-0
but when i'm launching the command fastboot flash recovery TWRPxxx.img it gives me that:
target reported max download size of 471859200 bytes
sending 'recovery' (25152 KB)...
OKAY [ 0.736s]
writing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: 0.743s
Actually i've asked for a new unlock bootloader code to huawuei, but i have even tried to get the code with dc-unlocker following this guide ( https://www.dc-unlocker.com/how-to-read-huawei-bootloader-unlock-code ) and even in this case my PC didn't find the mobile phone.
So Actually i have 2 major issues:
1) Why i got the error in ADB ?
2) why my pc even with USb drivers didn't find correctly the device in order to let dc unlocker find the bootloader code?
My objective is to root the Phone and recover deleted data by factory reset, but i don't know what to do now.
help!
jackielong said:
Good morning,
I'm trying to root this Huawuei Y6 II 2017 l_21 factory resetted but it's becoming very very hard, cause i've try every single method and nothing work.
...
1) Why i got the error in ADB ?
2) why my pc even with USb drivers didn't find correctly the device in order to let dc unlocker find the bootloader code?
My objective is to root the Phone and recover deleted data by factory reset, but i don't know what to do now.
help!
Click to expand...
Click to collapse
This is weird to me, because the error message in fastboot it what you get when you've not unlocked the bootloader (allowed to read, not write).
And the fact that fastboot and ADB recognized your device means that on the USB drivers side, you've a correction set up...
So I'd say that the bootloader isn't unlock at first glance. And unfortunately I don't know any ways of unlocking Huawei phones now...
I didn't know DC unlocker and I can't certify if this software is legit or not, nor provide you help regarding the software.
So I don't think you'll be able to successfully root your device. But that's just what I think, maybe someone more experienced will find the solution.
Have a good day
Even if one finds a TWRP image that at 100% matches his/her device, it's not a good idea to flash it: instead boot into it
Code:
fastboot boot twrp.img
BTW: Doing so has the additional advantage that TWRP doesn't get detected.
Hey All!
I recently(2 days back) purchased a Yu Yutopia running android 5.1.1. I enabled developer options, but it didn't have the OEM unlock option. And whenever i go into fastboot, and type
Code:
fastboot -i 0x2A96 oem unlock
it says
FAILED (remote: unknown command)
finished. total time: 0.008s
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.. Any help would be appreciated. I went through tons of documentation. the only thing missing for now is the Yutopia Drivers. Is that the problem? If so, can someone share the driver packs? This thread had it, but the link is broken, and is old.
If in Android -> Settings -> Developer options -> OEM unlock option isn't present then unlocking phone's bootloader is denied, you can't unlock it by means of Fastboot.
May be you can obtain from OEM/Carrier an unlock-key. Contact them.
BTW: You always can check Android's system file named build.prop for device's bootloader-unlock capability
Code:
adb devices
adb shell "getprop ro.oem.unlock_supported"
If the device supports "fastboot flashing unlock", then the returned value is 1
Soham41 said:
Hey All!
I recently(2 days back) purchased a Yu Yutopia running android 5.1.1. I enabled developer options, but it didn't have the OEM unlock option. And whenever i go into fastboot, and type
Code:
fastboot -i 0x2A96 oem unlock
it says .. Any help would be appreciated. I went through tons of documentation. the only thing missing for now is the Yutopia Drivers. Is that the problem? If so, can someone share the driver packs? This thread had it, but the link is broken, and is ol
Click to expand...
Click to collapse
Same here tried everything from flashing in EDL mode to downloading Yuware and trying to unlock bootloader. The adb commands
Code:
getprop sys.oem_unlock_allowed
getprop ro.oem_unlock_supported
both return blank. Using Miracle box software to check device info returns Bootloader : unknown. Trying to root via Miracle Box, Kingroot and other methods fails. The original Signed Android 5.1.1 based CM signed zips also won't flash via Recovery and the links are also almost non existent for those. Any hope of finding a original CM firmware to flash via QFIL is very slim. There has to be some way to get it working, there was a YouTube video showcasing the YU Yutopia on Stock Android 5.1.1 Engineering build that now doesn't have the OEM Unlock option only if someone would help. Getting it rooted somehow god knows how is the only option to get started.
Don't waste more time with trying to unlock phone's bootloader: it's NOT supported.
if anyone interested, I made some modifation in stock rom, so it is rooted, without unlocking bootloader, here is the link of my thread
Yu Yutopia (Yu5050) (Sambar) Stock engineering rom, rooted (Android 5.1)
For those interested, this is exactly engineering rom, with added modified patched boot, so it is rooted with magisk. v23 This is the detailed install procedure: You need to download the following: 1. YU_Yutopia_YU5050_V1_24.12.15 rom, link give...
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