Need help on a Mix3(stuck in fastboot after unlocking) - Android Q&A, Help & Troubleshooting

The phone is a Chinese version Mix 3, after unlocking it following the posted guide; it stuck in fastboot mode. No matter how I reboot it (either press and hold button or through adb)it would always go back to fastboot. I was able to connect it to pc via adb, and I also installed the newest TWRP. However, no way I was able to get into recovery nor TWRP recovery. In powershell, only fastboot was able to recognize the device but not adb. Please inform how to solve the issue, any help will be much appreciated. Thank you.

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[Q] HTC One stuck in bootloader

Hey guys I need help. My HTC One is stuck in bootloader mode. I was trying to upgrade to the latest T-Mobile update. I tried downgrading with an RUU and I tired to flash stock recovery. I'm not all too sure what exactly happened, but I have no OS or recovery mode. All I have is bootloader mode. When I try to reboot to OS there is a bootloop. When I try to go into recovery a picture of a phone shows up with a red triangle and exclamation point. When I enter Fastboot in the bootloader it shows up on the phone as Fastboot USB. Although it says Fastboot USB, the phone is not recognized on the computer. When I try to enter fastboot commands, the prompt says "waiting for device" no matter what command I type.
If I could get the computer to recognize the phone, I could flash a recovery and a ROM or run an RUU. But that is only if I could get it to recognize the phone and I can't. I have searched for days and I can't find anything that works.
I have no OS, no recovery mode, and the bootloader isn't recognized on the computer. Please help! any help/advice will be greatly appriciated!
Please and thank you! :good:
amkivb said:
Hey guys I need help. My HTC One is stuck in bootloader mode. I was trying to upgrade to the latest T-Mobile update. I tried downgrading with an RUU and I tired to flash stock recovery. I'm not all too sure what exactly happened, but I have no OS or recovery mode. All I have is bootloader mode. When I try to reboot to OS there is a bootloop. When I try to go into recovery a picture of a phone shows up with a red triangle and exclamation point. When I enter Fastboot in the bootloader it shows up on the phone as Fastboot USB. Although it says Fastboot USB, the phone is not recognized on the computer. When I try to enter fastboot commands, the prompt says "waiting for device" no matter what command I type.
If I could get the computer to recognize the phone, I could flash a recovery and a ROM or run an RUU. But that is only if I could get it to recognize the phone and I can't. I have searched for days and I can't find anything that works.
I have no OS, no recovery mode, and the bootloader isn't recognized on the computer. Please help! any help/advice will be greatly appriciated!
Please and thank you! :good:
Click to expand...
Click to collapse
keep on rebooting until it's seen in the PC. Make sure the driver is installed (or forcible install it if it's an unknown device).
After that, once you're able to see it... re-flash the unlock token (fastboot flase unlocktoken unlock_code.bin). That will get you back into the ROM. At least, that's what did for me:
http://forum.xda-developers.com/showthread.php?t=2665481
But I can't reflash an older RUU at all, so I can't downgrade.
Drashna said:
keep on rebooting until it's seen in the PC. Make sure the driver is installed (or forcible install it if it's an unknown device).
After that, once you're able to see it... re-flash the unlock token (fastboot flase unlocktoken unlock_code.bin). That will get you back into the ROM. At least, that's what did for me:
http://forum.xda-developers.com/showthread.php?t=2665481
But I can't reflash an older RUU at all, so I can't downgrade.
Click to expand...
Click to collapse
I figured it out. All I needed was windows 7 instead of 8 for some reason. After I installed 7 I just ran the 4.3 RUU. Now I have a different problem. Originally this all happened because I was going to upgrade to the new 4.4.2. Now I can't flash stock recovery. I have cwm but I need stock recovery to upgrade to 4.4.2. Since there is no 4.4.2 RUU I don't know what to do now.

Need help with bricked Redmi Note 3 Pro (Kenzo/Snapdragon)

Dear Community,
I got my Note 3 Pro Snapdragon Version today and I tried unlocking the bootloader, installing root and TWRP.
Unfortunately after I installed TWRP, WiFi didnt work anymore so I wanted to go back to where I was before.
i tried flashing the GlobalRom with the MiFlash Tool but somehow I'm now stuck with a bootloop.
The phone starts up and shows the MI Logo but doesnt go on. I tried booting TWRP temporarily via fastboot commands so that I can try to flash flashable zip files
but it doesnt let me execute "fastboot boot xyz.img" anymore because my device is locked.
I would really love to hear any solutions or ideas. I dont want any root or something anymore. If someone has an idea Im very happy!!!
thanks a lot in advance and tell me if you need any more infos
Paul/shisaya24
1. keep vol + and vol - pressed while connecting USB to enter adb mode
2. check if phone is connected with "adb devices" in command line, if phone shows up, enter "adb reboot edl"
3. now you can flash via MiFlash
Alex3oe said:
1. keep vol + and vol - pressed while connecting USB to enter adb mode
2. check if phone is connected with "adb devices" in command line, if phone shows up, enter "adb reboot edl"
3. now you can flash via MiFlash
Click to expand...
Click to collapse
First of all, HUGE thanks for your fast answer!
Unfortunately I couldnt get this to work. Since I am stuck at the Logog screen here is what I tried:
Pressing both volume buttons while Logo Screen and plugging USB.
Pressing both colume buttons while fastboot screen is up.
These two didnt enter adb mode, I guess because of the bootloop I'm in
I also tried antering recovery mode with volume up + power button. Pressing both volume buttons didnt help either but when I am in recovery like that it shows my device in adb as "sideload" device.
Maybe that helps ? Can you give further advice or am I doomed?
My idea would be: Is it possible to reflash the device completely only usinf fastboot? The only thing I seem to be able to enter is fastboot...
Is there a way from fastboot to "working phone" ?
or maybe through the "adb sideload" state?
thanks a lot in advance!
Paul
EDIT
tried installing via "adb sideload xyz.zip" command but after shortly showing a status bar on phone screen it aborted and said "Total xfer: 0.00x" on PC screen .
Also: I read "adb reboot edl" brings you to download mode so you can flash something. Tried it but the phone just rebooted the normal system, so it stuck on Logo again...
search miui forum for unbrick, there is 2 or 3 method without opening your device
exp: http://en.miui.com/forum.php?mod=viewthread&tid=257227
Unfortunately they all do not work because they always require either a phone in download mode, and i only get to fastboot and adb sideboard or they require flashing something via fastboot but I can't do that either because it says my device is locked if I try...
Any suggestions how to flash a ROM with fastboot only or with adb sideload?
Thanks a lot
Paul
shisaya24 said:
Unfortunately they all do not work because they always require either a phone in download mode, and i only get to fastboot and adb sideboard or they require flashing something via fastboot but I can't do that either because it says my device is locked if I try...
Any suggestions how to flash a ROM with fastboot only or with adb sideload?
Thanks a lot
Paul
Click to expand...
Click to collapse
I Had The Same Issue Brother ! There are only 2 Things which you can do now .
1. Test Point Method to enter EDL
2.Give it to Service Center . I Gave Mine to Service Center ,They Fixed it in 30 mins or less and it was free
Dharani_V said:
I Had The Same Issue Brother ! There are only 2 Things which you can do now .
1. Test Point Method to enter EDL
2.Give it to Service Center . I Gave Mine to Service Center ,They Fixed it in 30 mins or less and it was free
Click to expand...
Click to collapse
Can I do the test point thing myself or is it risky?
What kind of service center? A general mobile phone repair shop or a Xiaomi special one?
shisaya24 said:
First of all, HUGE thanks for your fast answer!
Unfortunately I couldnt get this to work. Since I am stuck at the Logog screen here is what I tried:
Pressing both volume buttons while Logo Screen and plugging USB.
Pressing both colume buttons while fastboot screen is up.
These two didnt enter adb mode, I guess because of the bootloop I'm in
I also tried antering recovery mode with volume up + power button. Pressing both volume buttons didnt help either but when I am in recovery like that it shows my device in adb as "sideload" device.
Maybe that helps ? Can you give further advice or am I doomed?
My idea would be: Is it possible to reflash the device completely only usinf fastboot? The only thing I seem to be able to enter is fastboot...
Is there a way from fastboot to "working phone" ?
or maybe through the "adb sideload" state?
thanks a lot in advance!
Paul
EDIT
tried installing via "adb sideload xyz.zip" command but after shortly showing a status bar on phone screen it aborted and said "Total xfer: 0.00x" on PC screen .
Also: I read "adb reboot edl" brings you to download mode so you can flash something. Tried it but the phone just rebooted the normal system, so it stuck on Logo again...
Click to expand...
Click to collapse
I've been facing the same (or a similar?) problem about a week ago but managed to get out. Knowing me for having a head like a sieve I made some notes, sadly quite rudimentary
Did you try to flash with MiFlash after "adb reboot edl"? If I remember rightly after "adb reboot edl" you got the logo like booting another way, but the light is blinking red. Then I could flash via MiFlash.
I'm quite sure that if you get a "reboot" after entering "adb reboot edl", your phone will be in edl mode.
I will try that this evening when I am at home again and report. Thanks
Alex3oe said:
I've been facing the same (or a similar?) problem about a week ago but managed to get out. Knowing me for having a head like a sieve I made some notes, sadly quite rudimentary
Did you try to flash with MiFlash after "adb reboot edl"? If I remember rightly after "adb reboot edl" you got the logo like booting another way, but the light is blinking red. Then I could flash via MiFlash.
I'm quite sure that if you get a "reboot" after entering "adb reboot edl", your phone will be in edl mode.
Click to expand...
Click to collapse
Unfortunately this doesnt work. Phone reboots and shows MI Logo but red light doesnt blink and MiFlash doesnt recognize any devices.
Do you have another idea? :/
How did you unlock the bootloader, via official permission or that unofficial hack?
Sent from my Moto G using Tapatalk
I didnt use the official way :/ Im so hoping my phone isnt broken. I wish i owuld have been more patient
shisaya24 said:
I didnt use the official way :/ Im so hoping my phone isnt broken. I wish i owuld have been more patient
Click to expand...
Click to collapse
Only options you have right now are:
1) using test points method which is a but cumbersome and voids warranty if you care about that.
2) go to a xiaomi service center of you have any nearby.
It is hard bricked.
So there is absolutely no option to unlock bootlader via adb sideload or fastboot ?
shisaya24 said:
So there is absolutely no option to unlock bootlader via adb sideload or fastboot ?
Click to expand...
Click to collapse
Apparently, no! Whenever using unofficial methods, read precautions carefully and you missed all as I can see. Wait if someone can help you out.
apply official unlock. then unlock your device from fastboot mode.
asaharaSK said:
apply official unlock. then unlock your device from fastboot mode.
Click to expand...
Click to collapse
That sounds nice and easy. I already applied for official unlock.
But: do you know if u can use the official unlock now? I can only access fastboot and adb sideload mode. Is it possible to activate official unlock from there? Or do I need a working ROM rather?
I would have thought that official unlock doesn't work from fastboot /adb sideload...
shisaya24 said:
That sounds nice and easy. I already applied for official unlock.
But: do you know if u can use the official unlock now? I can only access fastboot and adb sideload mode. Is it possible to activate official unlock from there? Or do I need a working ROM rather?
I would have thought that official unlock doesn't work from fastboot /adb sideload...
Click to expand...
Click to collapse
Does anyone know this?
I have the same problem. I made the same mistakes as shisaya24. I have followed every procedure for unbricking and nothing works. I even applied for an unlock code and got it from Xiomi. I used their mi-unlock app which requires fastboot (pwr/vol-) but it gets to 50% and bombs out. It states it can't verify the phone. Can anyone please help me??
smiley1960 said:
I have the same problem. I made the same mistakes as shisaya24. I have followed every procedure for unbricking and nothing works. I even applied for an unlock code and got it from Xiomi. I used their mi-unlock app which requires fastboot (pwr/vol-) but it gets to 50% and bombs out. It states it can't verify the phone. Can anyone please help me??
Click to expand...
Click to collapse
out of sheer desperation I tried MiPhone again and after a few tries, MiPhone started updating the OS. My phone now works again and I have an unlock code as well.

Need help getting to fastboot mode on my ZTE Z828

I have tried everything I can possibly imagine to try and get to fastboot mode. I can get to recovery and FTM mode and Download mode but not Fastboot for some reason. Im not sure what the button combos are for fastboot either. I plan on flashing the recovery and rooting my phone and adding a couple cool roms. I have ADB working good and I've tried to use adb reboot-bootloader but phone just restarts like normal even when clicking "boot bootloader" in recovery. My phone is the ZTE Z828. Any help would be greatly appreciated. Also, I have tried to do: fastboot devices in cmd after phone restarts but there are no devices in the list. Thanks again.

Sharp Aquos S2 stucked in Download mode

Hi:
My unlocked bootloader SS2 phone got stucked in Download Mode after successfully installed/flashed AICP ROM
It booted once and when i rebooted to enter recovery got stucked. Tried pushing buttons combos but still stucked in Dmode.
Have no access to fastboot from Windows but can get limited access to fastboot in Debian: can flash several twrp recoveries, can flash
AICP ROM again but can not get fastboot oem commands working.
Can't enter to recovery because phone never turn off.
Tried also to come back to Nougat but can't enter recovery to flash ss2_old_bootloader.
I do not know what to do.
Any help?
Also have this problem... any help?
have u try to connect into computer, use adb, and use this command :
Code:
fastboot reboot
what's the result with that?
No connection.
But i have reinstalled OST Treble ROM and phone now working.
gsausalito said:
Hi:
My unlocked bootloader SS2 phone got stucked in Download Mode after successfully installed/flashed AICP ROM
It booted once and when i rebooted to enter recovery got stucked. Tried pushing buttons combos but still stucked in Dmode.
Have no access to fastboot from Windows but can get limited access to fastboot in Debian: can flash several twrp recoveries, can flash
AICP ROM again but can not get fastboot oem commands working.
Can't enter to recovery because phone never turn off.
Tried also to come back to Nougat but can't enter recovery to flash ss2_old_bootloader.
I do not know what to do.
Any help?
Click to expand...
Click to collapse
I also have problem after flashing to AICP and sometimes phone (after power off) stuck in Download mode.
Just enter:
fastboot --set-active=a reboot
rgr1 said:
I also have problem after flashing to AICP and sometimes phone (after power off) stuck in Download mode.
Just enter:
fastboot --set-active=a reboot
Click to expand...
Click to collapse
I have the same problem. I tried to follow your advice, but fastboot in my PC doesn't recognize the parameter (all I get is fastboot help page).
Regards.
EDIT: reinstalled treble v3.1 via OST and it fixed the download mode issue.
thanks!
hi,
got the same problem, stuck at download mode but phones can`t to pc via usb so I am unable to use fastreboot.
Any other suggestions how to fix it ?
internety1 said:
hi,
got the same problem, stuck at download mode but phones can`t to pc via usb so I am unable to use fastreboot.
Any other suggestions how to fix it ?
Click to expand...
Click to collapse
in my xperience is connect your phone to the PC then open cmd ... make sure in folder of adb and fastboot .exe stored ...
type:
Code:
fastboot continue
longu said:
I have the same problem. I tried to follow your advice, but fastboot in my PC doesn't recognize the parameter (all I get is fastboot help page).
Regards.
EDIT: reinstalled treble v3.1 via OST and it fixed the download mode issue.
Click to expand...
Click to collapse
Maybe use other fastboot.
Sometimes you must enter:
Code:
fastboot --set-active=_a reboot
("_a" instead of "a")
BTW. My Aquos sometimes stuck in download mode after installing AICP.
I fixed this by entering:
Code:
adb shell
bootctl mark-boot-successful
Hello, i have the same exact problem. I tried to use adb program to fix this problem, but my laptop couldn't recognize my device. Any other solutions would be helpful. Thanks for your attention! (I'm a beginner in technology, so please forgive me)

ZTE Z820 (Obsidian) Cant boot fastboot/bootloader bootloop

I tried using the Tool All In One to unlock the bootloader and manually through the adb and fastboot terminal. ADB recognizes the device even though every time i reboot to bootloader through adb or manually through the phone recovery and manual buttons it never sends me to the bootloader. i was able to flash the stock firmware with SP flash tool. I really just want to install TWRP. i have been able to root this device with Wondershare dr.fone root program. I wanted to get it to work with the All in One tool so i can install TWRP to install custom firmware. If anybody can point me in the right direction on why the bootloader never works and fastboot? Maybe this model the bootloader is unaccessible? And if i cannot get to fastboot to unlock the bootloader can i still install twrp somehow. Also when using fastboot command it shows the device id it just says waiting for device everytime and cannot get it to recognize past that point. Not being able to get past this phone problem has been really bothering me and irritating me lately so hopefully i can get it resolved. I will be back later to see if anybody knows a solution to this. it seems like i have been trying to do the same thing and maybe im right and fastboot mode and the bootloader is locked and currently not possible.

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