Hey guys,
Guess today it was my turn ****ing up.
I apparently have completely bricked my Axon 7 after trying to go from LOS 15.1 to stock oreo beta. The only thing I seem to be able to boot to is DFU mode and for some reason, if I press the Power button + Vol Down I will get stuck on the ZTE Logo and my PC will detect my phone through the ADB interface but every time I try doing something it says my device is unauthorized. Is there any way I can authorize the device whilst being completely bricked?
The only other thing I get is the unlocked bootloader warning screen. If I don't press anything the phone will be stuck there, if I select recovery the phone will simply shut down and anything else will result in a reboot. I have also tried a deep flash cable that that only results on the phone being stuck at the unlocked bootloader screen.
I cannot access the bootloader,
I cannot access EDL mode
I can access ADB, but device shows as unauthorized.
I can access DFU mode.
Any suggestions would be appreciated. I have looked at the Hard brick guide that involves taking the phone apart but that's not something I really want to do.
Thanks in advance.
Edit: My phone gets detected by MiFlash but every time I try flashing I get a cannot receive hello packet and object reference not set to an instance of an object.
ZTE axon 7 EDL tool detects it in ADB mode but says ERROR! NO ANSWER FROM PHONE!. Possibly since its not authorized with ADB.
Ouh....DFU? I think this thing is totally bricked.
I can access my phone in ADB. If only I could make it reboot to edl or something like that through ADB even though my device shows as unauthorized. That is the only problem why this thing is completely messed up.. ADB works but I can't do anything with it because my phone shows unauthorized. Does anyone know if there's a workround or a bypass for that?
Victor13f said:
I can access my phone in ADB. If only I could make it reboot to edl or something like that through ADB even though my device shows as unauthorized. That is the only problem why this thing is completely messed up.. ADB works but I can't do anything with it because my phone shows unauthorized. Does anyone know if there's a workround or a bypass for that?
Click to expand...
Click to collapse
Hi Victor !
Like we discussed before there is nothing much left as to use the DFU unbrick-disassemble guide or buy something like this to be sure you tried everything.
Good Luck mate !
raystef66 said:
Hi Victor !
Like we discussed before there is nothing much left as to use the DFU unbrick-disassemble guide or buy something like this to be sure you tried everything.
Good Luck mate !
Click to expand...
Click to collapse
Thank you for your help . It's a risk you take when flashing phones.
Can you get custom recovery in it some recovery allow you to get in to EDM from there you can flash stock rom with Mi flash tool.......try to push both volume buttons at the same time don't touch the power button this might get you in to EDM.
stinka318 said:
Can you get custom recovery in it some recovery allow you to get in to EDM from there you can flash stock rom with Mi flash tool.......try to push both volume buttons at the same time don't touch the power button this might get you in to EDM.
Click to expand...
Click to collapse
Hi. I cant get anywhere near recovery. When I press both buttons without the power button nothing happens. Thanks though!
Victor13f said:
Hi. I cant get anywhere near recovery. When I press both buttons without the power button nothing happens. Thanks though!
Click to expand...
Click to collapse
The screen will be blank untill you plug in USB cable to flash on mi flash tool then you refresh button on the computer screen....
stinka318 said:
The screen will be blank untill you plug in USB cable to flash on mi flash tool then you refresh button on the computer screen....
Click to expand...
Click to collapse
The moment I plug in any cable the screen turns on automatically. I've tried everything at the phone won't go into EDL. Thanks though!
Victor13f said:
The moment I plug in any cable the screen turns on automatically. I've tried everything at the phone won't go into EDL. Thanks though!
Click to expand...
Click to collapse
Nothing, you'll have to use my guide for that (the one that raystef linked). Otherwise try entering FTM mode (Power and Vol-) but it's surely not gonna work. If it does, you'll see a screen with a square that says "FTM", and you'll be able to do " adb reboot edl" and flash stuff from there.
Unbricking by disassembing the phone is the most reliable method; an EDL cable just might save you the hassle but it's not guaranteed to work; some phones won't accept it for some reason. In this case just follow the guide unless you want to try your luck with an EDL cable
Choose an username... said:
Nothing, you'll have to use my guide for that (the one that raystef linked). Otherwise try entering FTM mode (Power and Vol-) but it's surely not gonna work. If it does, you'll see a screen with a square that says "FTM", and you'll be able to do " adb reboot edl" and flash stuff from there.
Unbricking by disassembing the phone is the most reliable method; an EDL cable just might save you the hassle but it's not guaranteed to work; some phones won't accept it for some reason. In this case just follow the guide unless you want to try your luck with an EDL cable
Click to expand...
Click to collapse
Hello. Thank you for your advices, it is as I feared.
I have however already bought another Axon 7 which I'm using at the moment, and I have plans for mine since it was only bought new about 8 months ago and I believe I could get a replacement for a fee even if its bricked to fault of my own. So I will try that since I'm not in a rush.
This thread can be closed.
Cheers!
Victor13f said:
Hello. Thank you for your advices, it is as I feared.
I have however already bought another Axon 7 which I'm using at the moment, and I have plans for mine since it was only bought new about 8 months ago and I believe I could get a replacement for a fee even if its bricked to fault of my own. So I will try that since I'm not in a rush.
This thread can be closed.
Cheers!
Click to expand...
Click to collapse
In that case you can just pretend that the phone got in that state by itself, it's not too morally correct but some people here pulled it off...
twice now i have gotten an axon 7 into this state. while mine have been a2017u models, i dont know that they are different than yours in that regard.
What worked for me the first time was letting the phone completely die. Being unable to boot into anything, it was somewhat a task to actually make it die, so i kept powering it on (which merely made the red led indicator come on). i did this over and over again over the course of a day at work whenever i noticed it had powered off.
eventually, the phone had no response at all. then, i plugged it up to my laptop, and left it, convinced i had killed it. a dialogue popped up after a minute or two on the phone screen saying to charge the phone by plugging it up. i had no access to fastboot or EDL mode prior. once i got that 'plug in to charge' screen, i switched it to the wall charger, and left it to charge a bit (50-60%) from that state, then, i unplugged it again, and somehow, i managed to get edl mode to work by unplugging it and pressing all three buttons and holding them (typical edl boot).
once there, i reflashed via MiFlash an earlier build. i rolled back using MiFlash as far back as i could. in the process, i lost my imei and serial, which i have yet to successfully recover, but i did get out of DFU pergatory. the imei thing seems to be caused by going back to MM which i did on both of my IMEI-less a2017u boards, but im only guessing. my dd axon 7 is the only one of the three boards with imei and serial, so maybe MM is a bad idea. lol.
The first time i recovered from DFU, i did it inadvertently by letting the phone die and then flashing in EDL mode as well. (i left it for a few weeks as i had given up on it.) after it died completely, and i plugged ut up to the computer and had the same experience, I flashed the beta oreo build for a2017 using miflash. the screen had stopped responding. and i ended up doing a RMA. I now know the screen response thing was bc of a faulty EDL file of B15. (happened again to another of my axon, so i retraced my steps and realized it was when i flashed b15 that it died) . the fix if your screen ever stops responding, but isnt physically damaged? re-flash via EDL a different file. it may take a few tries, but eventually a build will work. for me, it was Marshmallow. I still do not know for certain, but that possibly is what killed my IMEI. but hey, it boots and the screen works.
I genuinely hope posting my idiocy in toying with axon 7s has helped someone out there.
Related
Hello!
As title says i bricked my Axon :crying:
I followed http://forum.xda-developers.com/showpost.php?p=68738854&postcount=100 (and the german one that linked to this one) but couldnt do the fastboot unlock.
So i couldnt finish this and my phone required a pin number to start android: bootet and started up but wanted a pin code to start/enter system.
Wasnt able to fix that with googling for answers so i went back to edl mode and rewrote my backup boot/recovery images with axon7backup.
Had no errors with that but it wont start now:
After the ZTE Logo the display goes black but it connects as "handset diagnostic interface (DFU) (ComX)" to my computer.
I fiddled around with driver installing etc and forced the HS-USB QDLoader 9008 on it but no luck, axon7backup/root can not connect.
When i did the actual flashing yesterday it never connected with the hold both vol-keys and connect usb way either, always had to reboot into edl via adb.
I cant boot anything else (no twrp/recovery) it just goes to the diagnostic interface mode.
Thanks in advance
you can try to get into adb mode with this:
- power off your device
- hold the vol down key while plugin in the usb-c cable (connected to your pc)
- keep holding
- you should get a white box with FTM factory test mode
- you are free to use adb again - so you can get into edl mode as well....
for pin part that'S normal while unlocking your device encryption gets deleted and you have to abort and factory reset your device in twrp....
Starvirus said:
you can try to get into adb mode with this:
- power off your device
- hold the vol down key while plugin in the usb-c cable (connected to your pc)
- keep holding
- you should get a white box with FTM factory test mode
- you are free to use adb again - so you can get into edl mode as well....
for pin part that'S normal while unlocking your device encryption gets deleted and you have to abort and factory reset your device in twrp....
Click to expand...
Click to collapse
Thanks. I tried it but it wont go to FTM. Only goes to diagnostic com port.
It seems i cant even turn it off. The little red light on the front is on the whole time .
sadly the disadvantage of a built in battery, so you have to wait till the battery is empty and try my instructions then....if it's not realy off it won't work, the mode you are currently in you usually only reach if you switch it on while holding both volume buttons, the edl mode is sadly not reachable with a key combination directly on G models.
adb don't show your device?
Starvirus said:
sadly the disadvantage of a built in battery, so you have to wait till the battery is empty and try my instructions then....if it's not realy off it won't work, the mode you are currently in you usually only reach if you switch it on while holding both volume buttons, the edl mode is sadly not reachable with a key combination directly on G models.
Click to expand...
Click to collapse
Oh ok. I expected ftm to work from vol-down and power-button till restart.
@adb: sadly no connection possible since it goes straight to Comport Connection.
Edit:
Couldnt make that work. It was off and i connected the usb. So it showed me the loading battery picture where i cant do anything. held the vol-down the whole time. But as soon as it had some battery it went straight to comport-connection again
im sorry to say, but ur device is bricked to a degree where you would need ZTEs Flashtool to fix it. Unfortunately we dont have that tool, so you might have to send it in
i have the same exact problem :'(
Have u been able to fix it?? I'm in a situation that i cant even send it to ZTE to fix it :'(
nsabir said:
i have the same exact problem :'(
Have u been able to fix it?? I'm in a situation that i cant even send it to ZTE to fix it :'(
Click to expand...
Click to collapse
Hi,
couldnt fix it myself so i had to send it in.
Unless some tool/rom was released in the last few months to fix it yourself i would guess your device is bricked.
Hi I have almost the same problem, I tried to unlock bootloader and now I don't have the recovery, I can boot and use my mobile but I can't restore it or update it because I don't have the recovery
I try whit axon7tool to restore the recovery but I got a error.
MaxRink said:
im sorry to say, but ur device is bricked to a degree where you would need ZTEs Flashtool to fix it. Unfortunately we dont have that tool, so you might have to send it in
Click to expand...
Click to collapse
Hi, do you have any idea, if there will be such a flashtool to work with DFU mode? I'm thinking that there are a lot of guys have bricked their devices (including me).
((
I tried to go from 7.0 to 7.1.1. I had root, unlocked bootloader and twrp. I somehow managed to hose everything and now when I try to turn on the phone I get the AXON screen and it stays there.
If I try to "power and up" it blanks out and at least shows up as com 5 in the com list.
Tenfar's tool goes through the motions but no change, Tenear's tool doesnt see the device.
Am I hosed or is there someway I can unscrew this up.
I'm right there with you. Literally did the exact same thing. I'm stuck in DFU mode on my 2017U.
UnsecWifi said:
I tried to go from 7.0 to 7.1.1. I had root, unlocked bootloader and twrp. I somehow managed to hose everything and now when I try to turn on the phone I get the AXON screen and it stays there.
If I try to "power and up" it blanks out and at least shows up as com 5 in the com list.
Tenfar's tool goes through the motions but no change, Tenear's tool doesnt see the device.
Am I hosed or is there someway I can unscrew this up.
Click to expand...
Click to collapse
Use this thead https://forum.xda-developers.com/axon-7/development/edl-emergency-dl-mode-twrp-unlock-t3553514
And remember NOT USE ZADIG DRIVER FOR MIFLASH, use the driver from the thead.
Tell me if it work
"cannot receive hello packet", I think its hosed. I dont even know if its really in EDL mode, its a black screen and it shows up as a COM port but nothing seems to see it.
UnsecWifi said:
"cannot receive hello packet", I think its hosed. I dont even know if its really in EDL mode, its a black screen and it shows up as a COM port but nothing seems to see it.
Click to expand...
Click to collapse
use another computer have windows 7 32 bit(try use windows 10 32 bit)
UnsecWifi said:
"cannot receive hello packet", I think its hosed. I dont even know if its really in EDL mode, its a black screen and it shows up as a COM port but nothing seems to see it.
Click to expand...
Click to collapse
If it sees it you should be alright, just close the MiFlash, or even better reboot your computer. Then try to reset ur axon by holding power button and then when it fails enter EDL again using the combo.
The MiFlash works best on a freshly booted EDL where u did not attempt and fail to flash stuff before. So always reboot the EDL fresh before using the tool.
I went back and forth between my laptop(win10) and my desktop(win7) and never could get anything to work through MiFlash. Then all of a sudden it worked (I have no idea why). I wound up flashing the B15 new_full.
After it finished it did nothing. No splash screen nothing. Only flashing led. I plugged it back in and the battery was dead. I charged it up and it worked!!!!:victory::laugh::victory: Awesome. Thanks to everyone.
UnsecWifi said:
I went back and forth between my laptop(win10) and my desktop(win7) and never could get anything to work through MiFlash. Then all of a sudden it worked (I have no idea why). I wound up flashing the B15 new_full.
After it finished it did nothing. No splash screen nothing. Only flashing led. I plugged it back in and the battery was dead. I charged it up and it worked!!!!:victory:[emoji23]:victory: Awesome. Thanks to everyone.
Click to expand...
Click to collapse
Did it work on win 10 or 7?
Also what drivers did you have installed? I'm afraid mine is a lost cause
Did it on my desktop with Win7. Used qualcom bulk drivers. And the only file to work for me was B15-NEW_FULL (Nougat). Unpack it and select the A2017U_B15-New_twrp_edl folder, refresh so you see your COM port and flash it.
If it doesnt work try going back into EDL mode, closing and reopening the MiFlash utility, switch USB ports etc. And use the cable that came with your phone. Make sure to charge it first with the original charger.
bought this phone used and I don't think it was rooted but never checked, confirmed. Last night it turned off and will not turn on anymore..
Tried the pwr button for several minutes and no change. Plugged it in with several different cables and no change.
Any other suggestions or options? USB to computer detects something but says it can't install the driver.
Any ideas?
oNe
Can you enter to the bootloader menu? Maybe you can enter recovery and wipe the cache and dalvik
martinfarrell11 said:
Can you enter to the bootloader menu? Maybe you can enter recovery and wipe the cache and dalvik
Click to expand...
Click to collapse
negative, either the phone is totally dead or the screen is dead but NOTHING happens when pwr is pressed
here is what I have tried:
1. Press and hold PWR button for over 3minutes
- Plugged in and unplugged into ac - no change
2. Press and hold volume DOWN + Pwr for over 3minutes
- Plugged in and unplugged into ac - no change
3. Plugged into different a/c power outlets with 2 different chargers - no change
NOT sure what else to try or do?
Funny thing is if ya plug into a computer it does indeed detect "something'
However it says it can't load the USB drivers something about QU_***
Open to any ideas and suggestions.. WHILE I would love to get the phone working whats more high priority for me now is the 20gb's of pics that apparently did NOT back up.
oNe
Sean Price said:
Funny thing is if ya plug into a computer it does indeed detect "something' However it says it can't load the USB drivers something about QU_***
Click to expand...
Click to collapse
Funny thing is- that "something" is the solution to your problem. Capture the error message completely and search the 6P forums for that. Several threads on the "something" issue.
v12xke said:
Funny thing is- that "something" is the solution to your problem. Capture the error message completely and search the 6P forums for that. Several threads on the "something" issue.
Click to expand...
Click to collapse
Several threads with no solution. I went through the same "something" . Can't be fixed
v12xke said:
Funny thing is- that "something" is the solution to your problem. Capture the error message completely and search the 6P forums for that. Several threads on the "something" issue.
Click to expand...
Click to collapse
fixed that issue, aka QHSUSB_BULK is now working properly according to Device Manager.. but Nexus 6P is not detected, and doesn't even show up in Disk Management either.
Any other ideas?
please advise..
oNe
Sean Price said:
fixed that issue, aka QHSUSB_BULK is now working properly according to Device Manager.. but Nexus 6P is not detected, and doesn't even show up in Disk Management either. Any other ideas? please advise.. oNe
Click to expand...
Click to collapse
If you found the right EDL_9008 thread, there is Qualcomm software to download for your PC. If your phone is in the right downloader mode you can use the PC software with a special recovery.img. I don't know anything about it, just read through the threads long ago. It's a mixed bag with some success stories, some not. Keep looking though, I think you are on the right track. The original poster was "Tenfar" if I recall correctly. Good luck.
Try cleaning out the charging port.
Hi there,
I think we are in the same/similar boat. My phone shut off while using it (screen froze, then went black) and seems to have bricked itself. I *am* able to get mine to turn on, but only about once per day after it has been left plugged in for a few hours (although there is no indication it is charging while plugged in - never gets warm, no lights, etc.) I can get into recovery if I am lucky (usually get to the android bot laying on its back, then PWR+VOLUP just causes the phone to shut off instead of actually getting into recovery menu.) I've been able to clear cache/factory wipe from recovery menu with no luck. I never did unlock the bootloader so I am unable to use fastboot to do anything. I tried to flash a few OTA (full and incremental) images using adb when I am able to get into recovery, but they always failed in one way or another.
I've been trying the methods described in the 'tenfar' threads - using the xiaomi flasher and QPST tools. The xiaomi tool always fails for me. I have been able to get the QFIL tool to successfully 'download' about 3 times now, with tenfar's recovery images. However, after the success message, the phone doesn't do anything (I read in other threads it should reboot itself) - and after unplugging, the behavior of the device seems to be the same - just stuck and won't turn on at all.
Right now I think I am stuck in 'EDL' mode where the only evidence that the device isn't completely dead is that it shows up in device manager as 'Qualcomm HS-USB QDLoader 9008 (COM3)', and the factory imager tools do recognize it.
It *seems* like the only way forward is to somehow get one of these factory tools to flash the right set of files onto the device - I've tried a few now with no luck. I even tried extracting the relevant *.img files out of the google factory image download and replacing tenfar's image files with them. I was able to load those onto the device with QFIL. This morning my attempt at turning on the device has me stuck on the white google logo, which is new behavior for me - usually it shows the logo for ~5-10 seconds then the device powers off. I've left it on for a while stuck on the white google image, but I'm not sure if I'm doing anything useful here.
Here are my reference threads:
tenfar's 'debrick' thread
QFIL thread
If anyone has any crazy ideas, I am open to try them. Thank you.
Maybe disable big cores?
apples1678 said:
Hi there,
I think we are in the same/similar boat. My phone shut off while using it (screen froze, then went black) and seems to have bricked itself. I *am* able to get mine to turn on, but only about once per day after it has been left plugged in for a few hours (although there is no indication it is charging while plugged in - never gets warm, no lights, etc.) I can get into recovery if I am lucky (usually get to the android bot laying on its back, then PWR+VOLUP just causes the phone to shut off instead of actually getting into recovery menu.) I've been able to clear cache/factory wipe from recovery menu with no luck. I never did unlock the bootloader so I am unable to use fastboot to do anything. I tried to flash a few OTA (full and incremental) images using adb when I am able to get into recovery, but they always failed in one way or another.
I've been trying the methods described in the 'tenfar' threads - using the xiaomi flasher and QPST tools. The xiaomi tool always fails for me. I have been able to get the QFIL tool to successfully 'download' about 3 times now, with tenfar's recovery images. However, after the success message, the phone doesn't do anything (I read in other threads it should reboot itself) - and after unplugging, the behavior of the device seems to be the same - just stuck and won't turn on at all.
Right now I think I am stuck in 'EDL' mode where the only evidence that the device isn't completely dead is that it shows up in device manager as 'Qualcomm HS-USB QDLoader 9008 (COM3)', and the factory imager tools do recognize it.
It *seems* like the only way forward is to somehow get one of these factory tools to flash the right set of files onto the device - I've tried a few now with no luck. I even tried extracting the relevant *.img files out of the google factory image download and replacing tenfar's image files with them. I was able to load those onto the device with QFIL. This morning my attempt at turning on the device has me stuck on the white google logo, which is new behavior for me - usually it shows the logo for ~5-10 seconds then the device powers off. I've left it on for a while stuck on the white google image, but I'm not sure if I'm doing anything useful here.
Here are my reference threads:
tenfar's 'debrick' thread
QFIL thread
If anyone has any crazy ideas, I am open to try them. Thank you.
Click to expand...
Click to collapse
I have the 100% same issue. Screen froze,then went black and now its stuck in EDL mode. I need my data. Recovery access or anything else would be fine/enough for me. I have had LineageOS and TWRP on the device. With TWRP i can access my data.
How have you got your device on? Mine dont start once a day or so. Its always in EDL mode ( 9008 ).
ncc8uetou5et said:
I have the 100% same issue. Screen froze,then went black and now its stuck in EDL mode. I need my data. Recovery access or anything else would be fine/enough for me. I have had LineageOS and TWRP on the device. With TWRP i can access my data.
How have you got your device on? Mine dont start once a day or so. Its always in EDL mode ( 9008 ).
Click to expand...
Click to collapse
Sorry bud - I never was able to get any further than when I posted this. I eventually gave up, got a full out of warranty refund through my CC after the manufacturer wouldn't help me at all, and upgraded to a Pixel XL. I still do have the device, I should try to boot it up again . I didn't have any data concerns on my device so I was able to give up... good luck!
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Click to expand...
Click to collapse
Take a look at this comprehensive listing of Nexus 7 button presses/interrupts. They may be of some use...
https://forum.xda-developers.com/showthread.php?p=37606945#post37606945
Hi, Gabu1405...
APX mode is never a good sign with the Nexus 7. It usually indicates that the bootloader has become corrupted, erased or overwritten (by something that is not a valid bootloader). When this occurs, the device is hardbricked and usually requires a motherboard replacement to resurrect the device, although there is a procedure called 'flatline', but this requires previously generated device unique 'blob' files, which you mention in your post.
Having said all of that though, nothing in your description should have caused the bootloader to have become 'damaged'. In order to erase, corrupt or overwrite the bootloader, your device would need to be bootloader unlocked in the first place, because a locked bootloader prohibits any unauthorised write access - bootloader locked devices can only be system 'modified' by official digitally signed updates from Google, which are flashed via the stock recovery.
Are you certain the Nexus 7 is showing as an APX device in Windows device manager?
What was the battery status/percentage when you attempted to unlock the bootloader? Maybe the tablet just needs a good charge, maybe for several hours!
You don't unlock the bootloader with ADB. Android Debug Bridge only works in fully booted Android and with the stock factory recovery. You need to use fastboot to unlock the bootloader, the command being fastboot oem unlock, whilst the device is in fastboot mode, which you boot into via the Volume Down+Power Button key press combo, as you mention in your post.
How it (may have) got into APX mode is certainly strange, because as I've said, this isn't something that normally happens spontaneously - when it happens, it's often due to people mistakenly flashing an incorrect .IMG file to the bootloader partition, causing the bootloader to be overwritten. A possible explanation is hardware failure, and that the emmc/NAND chip storage has developed a fault, and caused the bootloader to become corrupted. It's worth bearing in mind that the Nexus 7 is now seven years old, and with the best will in the world, these things don't last forever, unfortunately. Components fail and data corruptions occur.
If your Nexus 7 is truly in APX mode, for whatever reason, then I'm afraid it's likely hardbricked, and a motherboard replacement is the only realistic way of resurrecting it.
I can only suggest you try charging your Nexus 7, maybe overnight, or for several hours at least, and maybe try the button presses referenced via the link at the top of this post, and see if you can coax life back into your Nexus 7. It does happen sometimes; a seemingly dead device will suddenly spring back to life, through a combination of serendipity and hitting on doing the right things, in the right order, and at the right time
Good luck, Gabu1405...
Rgrds,
Ged.
GedBlake said:
Take a look at this comprehensive listing of Nexus 7 button presses/interrupts. They may be of some use...
https://forum.xda-developers.com/showthread.php?p=37606945#post37606945
Hi, Gabu1405...
APX mode is never a good sign with the Nexus 7. It usually indicates that the bootloader has become corrupted, erased or overwritten (by something that is not a valid bootloader). When this occurs, the device is hardbricked and usually requires a motherboard replacement to resurrect the device, although there is a procedure called 'flatline', but this requires previously generated device unique 'blob' files, which you mention in your post.
Having said all of that though, nothing in your description should have caused the bootloader to have become 'damaged'. In order to erase, corrupt or overwrite the bootloader, your device would need to be bootloader unlocked in the first place, because a locked bootloader prohibits any unauthorised write access - bootloader locked devices can only be system 'modified' by official digitally signed updates from Google, which are flashed via the stock recovery.
Are you certain the Nexus 7 is showing as an APX device in Windows device manager?
What was the battery status/percentage when you attempted to unlock the bootloader? Maybe the tablet just needs a good charge, maybe for several hours!
You don't unlock the bootloader with ADB. Android Debug Bridge only works in fully booted Android and with the stock factory recovery. You need to use fastboot to unlock the bootloader, the command being fastboot oem unlock, whilst the device is in fastboot mode, which you boot into via the Volume Down+Power Button key press combo, as you mention in your post.
How it (may have) got into APX mode is certainly strange, because as I've said, this isn't something that normally happens spontaneously - when it happens, it's often due to people mistakenly flashing an incorrect .IMG file to the bootloader partition, causing the bootloader to be overwritten. A possible explanation is hardware failure, and that the emmc/NAND chip storage has developed a fault, and caused the bootloader to become corrupted. It's worth bearing in mind that the Nexus 7 is now seven years old, and with the best will in the world, these things don't last forever, unfortunately. Components fail and data corruptions occur.
If your Nexus 7 is truly in APX mode, for whatever reason, then I'm afraid it's likely hardbricked, and a motherboard replacement is the only realistic way of resurrecting it.
I can only suggest you try charging your Nexus 7, maybe overnight, or for several hours at least, and maybe try the button presses referenced via the link at the top of this post, and see if you can coax life back into your Nexus 7. It does happen sometimes; a seemingly dead device will suddenly spring back to life, through a combination of serendipity and hitting on doing the right things, in the right order, and at the right time
Good luck, Gabu1405...
Rgrds,
Ged.
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Click to collapse
Sorry, I expressed myself wrongly, I ran the same command as you said, it was fastboot oem unlock and it just said, "waiting for device..." then I tried fastboot oem unlock-go, also the same thing "waiting for device" so I just disconnected the tablet and restarted it and it was working pretty fine, then I connected to the PC and tried to enter fastboot mode manually, and this is when it shut down and never turned back on.
Also, my battery was at 70% at that time and yes, It's clearly on APX mode.
Well, thank you for your reply, now the only thing I got to do is recharge it and hope for the best.
Regards.
Gabu1405 said:
Sorry, I expressed myself wrongly, I ran the same command as you said, it was fastboot oem unlock and it just said, "waiting for device..." then I tried fastboot oem unlock-go, also the same thing "waiting for device" so I just disconnected the tablet and restarted it and it was working pretty fine, then I connected to the PC and tried to enter fastboot mode manually, and this is when it shut down and never turned back on.
Also, my battery was at 70% at that time and yes, It's clearly on APX mode.
Well, thank you for your reply, now the only thing I got to do is recharge it and hope for the best.
Regards.
Click to expand...
Click to collapse
Probably not much use until, or indeed if, you can get out of APX Mode... But the 'waiting for device' message is usually an indicator of a Windows driver problem - Windows is not able to communicate with the Nexus 7.
The way you'd normally do things is by first running the command fastboot devices
This command does nothing, except to confirm you have a viable fastboot connection, by displaying your Nexus 7's unique serial number in your Windows Command/DOS box. If this serial number fails to appear, you have a driver/connectivity problem and proceeding on to fastboot oem unlock would be pointless until the driver/connectivity problem is resolved.
Anyway, I hope charging the device helps. I'm still inclined to think that your device is recoverable - it would certainly be very unusual for the bootloader to be borked when it hasn't even been unlocked yet. In the seven years I've been a Nexus 7 owner, and being active on these forums for many of those years, I haven't encountered any reports by other XDA members where a locked bootloader has simply quit working... As I say, it'd be very unusual, but I suppose not wholly impossible.
Rgrds,
GB.
GedBlake said:
Probably not much use until, or indeed if, you can get out of APX Mode... But the 'waiting for device' message is usually an indicator of a Windows driver problem - Windows is not able to communicate with the Nexus 7.
The way you'd normally do things is by first running the command fastboot devices
This command does nothing, except to confirm you have a viable fastboot connection, by displaying your Nexus 7's unique serial number in your Windows Command/DOS box. If this serial number fails to appear, you have a driver/connectivity problem and proceeding on to fastboot oem unlock would be pointless until the driver/connectivity problem is resolved.
Anyway, I hope charging the device helps. I'm still inclined to think that your device is recoverable - it would certainly be very unusual for the bootloader to be borked when it hasn't even been unlocked yet. In the seven years I've been a Nexus 7 owner, and being active on these forums for many of those years, I haven't encountered any reports by other XDA members where a locked bootloader has simply quit working... As I say, it'd be very unusual, but I suppose not wholly impossible.
Rgrds,
GB.
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Click to collapse
Well, charged my device for a whole day, and now I tried to do the button combinations which you sent the link, nothing happened.
I thought that my battery could be unplugged or the cable was loose or something, so I opened the tablet and it was fine.
So, I just decided to do the button combinations while plugged into my PC, and I noticed that doesn´t matter which combination I try, the tablet disconnects from the PC and instantly reconnects, but still in APX mode.
I guess it is Game Over for me, gonna recharge it again, and try again tomorrow.
Thanks again.
Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
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Click to collapse
Hi!
I had a Nexus 7 stuck in APX mode as well. Without the blobs saved you can't do anything. I tried a lot of thigs but nothing really helped. I ended up searching for an another N7 with a broken screen but with a working motherboard online. I was lucky and find one around $15. I swapped the boards and it was good to go.
Zsolti
Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Click to expand...
Click to collapse
Check out my guide.
Not sure how to title this forum post, but this is the best I got. Forgive my ignorance and lack of knowledge on these topics.
I was trying to root my Axon 7 mini. After some searching to find out how to unlock the bootloader (like needing JDK, older Android SDK version to run android.bat, etc.), I finally got it to work. Ran Recovery to "apply update from SD Card" (can not remember the file right now) and was then ready to load TWRP Recovery. When I rebooted to the recovery TWRP image, it told me something failed and the phone had to be factory reset. I took my SD card out in fear of my data being deleted and "accidentally" clicked the power button. It then reloaded with a password prompt where I typed some random password (1234 because I never set a pin password nor knew what to do here), clicked submit, and then gave me some error; now my phone doesn't work.
The Problem:
- I can enter bootloader, sometimes, but can only run fastboot commands; adb device does not detect phone so can't run adb commands (always says the server is old or something and reloads daemon successfully but never finds my device regardless). Also, I don't think I can get it to run in EDL mode; MiFlash gives out errors too when trying to flash recovery images.
- Recovery mode doesn't appear or work; not sure if the MiFavor command prompts on the phone is recovery or not, but it's safe to say this no longer appears. This is also where I believe the phone bootloops. I can get the fastboot commands to flash a TWRP recovery, but it never actually enters the TWRP dashboard.
- Can not turn off the phone... I think. None of the command options that appear on-phone shut it off; however, when the screen does stay black, I'm not sure if it's in EDL mode or plainly off.
- Device Manager shows the phone as different stuff (namely Kedacom USB Device and Portable Devices/MTB USB Device). Sometimes Qualcomm appears, but it depends. More often than not, when my device does appear, there's either an error code (like Code 10, Code 43) and/or the device is grayed out.
Conclusion:
I just want to get my phone to work normally again, if possible. Currently, I locked the oem to see if fastboot commands could still work and now I'm stuck at the ZTE logo, so can't try to unlock it right now. What are the proper tools, drivers, programs, etc I need to get this phone back to normal? I've scoured the web and these forums for 2 days now with no luck and lots of either missing info or obscure info.
I bought this at Best Buy, so I'm assuming it's US Axon7 Mini version in terms of drivers (not sure if the box specifies any info that could be useful here).
Un-brick Axon 7 Mini
Dear all,
I experienced the same issue with my phone after I tried to flash it with custom ROMs and recovery.
I thought I lost it as I was not able to enter adb mode (not recognized on the PC) or even not able to enter EDL mode with the button combination so not able to do anything with it.
Only watch it boot and display the ZTE logo.
After some research, here is what I had to do to get it recovered.
First thing you need to get is an EDL cable.
I let you search on your favorite site. Mine was a Generic eDL Deep Flash Qualcomm 9008 Cable 2 in 1 for Z3 X/Octopus.
Until you receive it, make sure you have the latest Qualcomm drivers installed on your PC.
You can find it easily.
Then, connect your phone and your PC with the EDL cable.
Press the button on your EDL cable (there should be one) for a few seconds and keep it pressed.
Then, press the power button and keep it pressed for at least 20 seconds.
At this stage, you should have both buttons pressed and after some time, you should feel the phone rebooting.
After 20 seconds, release the power button.
Then, after 10 other seconds, release the EDL cable button.
At this stage, your phone screen should stay black and your phone should appear in the device manager as Qualcomm USBHUB (or somehting similar)
You are in EDL mode and should be able to perform a recovery flashing using tuliptool.
Then I followed the steps I found here:
https://forum.xda-developers.com/axon-7-mini/how-to/updating-uk-version-zte-axon-7-mini-to-t3717933
If you are still stuck, pm me.
Be patient, all will be fine,
mariegalante55 said:
Dear all,
I experienced the same issue with my phone after I tried to flash it with custom ROMs and recovery.
I thought I lost it as I was not able to enter adb mode (not recognized on the PC) or even not able to enter EDL mode with the button combination so not able to do anything with it.
Only watch it boot and display the ZTE logo.
After some research, here is what I had to do to get it recovered.
First thing you need to get is an EDL cable.
I let you search on your favorite site. Mine was a Generic eDL Deep Flash Qualcomm 9008 Cable 2 in 1 for Z3 X/Octopus.
Until you receive it, make sure you have the latest Qualcomm drivers installed on your PC.
You can find it easily.
Then, connect your phone and your PC with the EDL cable.
Press the button on your EDL cable (there should be one) for a few seconds and keep it pressed.
Then, press the power button and keep it pressed for at least 20 seconds.
At this stage, you should have both buttons pressed and after some time, you should feel the phone rebooting.
After 20 seconds, release the power button.
Then, after 10 other seconds, release the EDL cable button.
At this stage, your phone screen should stay black and your phone should appear in the device manager as Qualcomm USBHUB (or somehting similar)
You are in EDL mode and should be able to perform a recovery flashing using tuliptool.
Then I followed the steps I found here:
https://forum.xda-developers.com/axon-7-mini/how-to/updating-uk-version-zte-axon-7-mini-to-t3717933
If you are still stuck, pm me.
Be patient, all will be fine,
Click to expand...
Click to collapse
I had a feeling an EDL cable was my only option left given everything I've looked up and the multiple methods I've tried. Wanted to avoid spending money on one but doesn't look like I have a choice given the circumstances - oh well. Regardless, thank you for the response and advice. Have to wait a while, though, to get the cable and test to see if this works.
If anyone else ever ends up in the same royally screwed situation as me, getting an EDL cable - or DIY one if you wanna be cheap and are confident enough to do so - is probably your saving grace.
Kuma21 said:
I had a feeling an EDL cable was my only option left given everything I've looked up and the multiple methods I've tried. Wanted to avoid spending money on one but doesn't look like I have a choice given the circumstances - oh well. Regardless, thank you for the response and advice. Have to wait a while, though, to get the cable and test to see if this works.
If anyone else ever ends up in the same royally screwed situation as me, getting an EDL cable - or DIY one if you wanna be cheap and are confident enough to do so - is probably your saving grace.
Click to expand...
Click to collapse
K, I can get tuliptool to work and run command, but i keep getting a "Failed: Unkown Error" response everytime i run a command. Can't unlock my bootloader, nor write a recovery disk due to this error. does anyone have any idea why this happens?