Acer Tablet stuck in DnX mode, almost no fastboot commands work - General Questions and Answers

Hi,
I have an old Acer Iconia One 7 B1-750, and I suspect something is corrupt.
When I start it up, all it says is this:
Code:
Entering DnX mode.
Waiting for fastboot command...
And I have no way of exiting this menu.
Fastboot as root detects the device, however ADB does not.
I tried downloading a stock ROM, however fastboot doesn't want to work.
Bash:
$ sudo fastboot --version
fastboot version 31.0.3p1-android-tools
Installed as /usr/bin/fastboot
$ sudo fastboot getvar all
getvar:all FAILED (remote: 'unknown command')
Finished. Total time: 0.001s
$ sudo fastboot flash boot boot.img
Sending 'boot' (9426 KB) OKAY [ 0.391s]
Writing 'boot' FAILED (remote: 'unknown command')
fastboot: error: Command failed
I'm using heavily modified Garuda Linux.
Code:
[email protected]
.%;888:8898898: --------------
x;XxXB%89b8:b8%b88: OS: Garuda Linux
.8Xxd 8X:. Host: ASUSTeK COMPUTER INC. TUF B450-PLUS GAMING
.8Xx; 8x:. Kernel: 5.17.4-zen1-1-zen
.tt8x .d x88; Uptime: 2 hours, 21 mins
[email protected]; .db: [email protected]; Packages: 2371 (pacman), 12 (flatpak)
,tSXX° [email protected]; Shell: fish
.SXxx bBBBBBBBBBBBBBBBBBBBbSBX8; WM: i3
,888S pd! Terminal: st
8X88/ q CPU: AMD Ryzen 7 2700 (16) @ 3.2GHz
GBB. GPU: NVIDIA GeForce GTX 1050 Ti
x%88 [email protected]@[email protected]@[email protected]@[email protected]@[email protected]@X. Memory: 3.56GiB / 7.73GiB
dxXd dB8b8b8B8B08bB88b998888b88x.
dxx8o [email protected]@;.
dx88 [email protected]
d:[email protected]
.d988999889889899dd.
Linux Cybertank 5.17.4-zen1-1-zen #1 ZEN SMP PREEMPT Wed, 20 Apr 2022 18:29:30 +0000 x86_64 GNU/Linux
How can I get fastboot to work and flash a stock or modified ROM?

niltigospe said:
Hi,
I have an old Acer Iconia One 7 B1-750, and I suspect something is corrupt.
.....
How can I get fastboot to work and flash a stock or modified ROM?
Click to expand...
Click to collapse
I don't know the format of your firmware but you could try flashing the firmware using Manufacturing Flash tool if its Intel-based

Hey
niltigospe​did you find solution?
I've got the exact same tablet with exact same problem. I've been trying to fix it for days and tried almost everything. Tried fastboot with linux machine, and win 7/10, different usb ports, different usb cables, with or without adapters. Nothing seems to work. I've tried the Platform Flash Tool Lite but it just always throws this:
Don't know how to reboot device BaytrailA844BC46, state is 'dnx_os'
ERROR : [Port 0/12/4] Failed to reboot the device
You found any real stock rom firmwares or TWRP images for the tablet?.
I suspect the bios might be corrupted but no idea how to get the original bios or how to flash it to the tablet.

Related

[Q] Do I still need a special fastboot.exe for TF300T?

I have 3 HTC devices and 2 TF300T's. I have all the drivers for HTC's devices and TF300T
along with the SDK tools for ICS and JB. The two SDK directories are in my Win 7 Pro x64
PATH so I can run them from any cmd.exe window. I remember seeing a special
version of fastboot for the ASUS tablets and wondered if that was needed for
use of fastboot mode on the TF300T?
If I do, can someone past a download URL for it?
Thanks
fuzzynco said:
I have 3 HTC devices and 2 TF300T's. I have all the drivers for HTC's devices and TF300T
along with the SDK tools for ICS and JB. The two SDK directories are in my Win 7 Pro x64
PATH so I can run them from any cmd.exe window. I remember seeing a special
version of fastboot for the ASUS tablets and wondered if that was needed for
use of fastboot mode on the TF300T?
If I do, can someone past a download URL for it?
Thanks
Click to expand...
Click to collapse
The fastboot.exe is the same for all android devices.
Funny thing happening to me: fastboot devives doens't return serial no. but it does work when I flash ...
fuzzynco said:
I have 3 HTC devices and 2 TF300T's. I have all the drivers for HTC's devices and TF300T
along with the SDK tools for ICS and JB. The two SDK directories are in my Win 7 Pro x64
PATH so I can run them from any cmd.exe window. I remember seeing a special
version of fastboot for the ASUS tablets and wondered if that was needed for
use of fastboot mode on the TF300T?
If I do, can someone past a download URL for it?
Click to expand...
Click to collapse
Ti2 said:
Funny thing happening to me: fastboot devives doens't return serial no. but it does work when I flash ...
Click to expand...
Click to collapse
If you have got a problem with your adb or fastboot or recovery....it's very simply and faster
use this:
Download this file "fastboot.zip"
Install this file somewhere in one folder which is named "fastboot" on your PC
=> disk C: root
Unzipped this file on the folder "fastboot" and you will find 3 files:
- adb.exe
- AdbWinApi.dll
- fastboot.exe
and when you need to push something by the bootloader, you can use it.
Don't forget to push on this folder the file that you need. For exemple: boot.img or a recovery.img, etc...
The line command is :
Code:
c:\fastboot>
Enter
Code:
c:\fastboot>fastboot flash recovery recovery.img
Enter
If you want to flash the "recovery.img" file
******************************************************************
******************************************************************
If you want to know all lines of command
Code:
c:\fastboot>fastboot
Code:
usage: fastboot [ <option> ] <command>
commands:
update <filename> reflash device from update.zip
flashall flash boot + recovery + system
flash <partition> [ <filename> ] write a file to a flash partition
erase <partition> erase a flash partition
getvar <variable> display a bootloader variable
boot <kernel> [ <ramdisk> ] download and boot kernel
flash:raw boot <kernel> [ <ramdisk> ] create bootimage and flash it
devices list all connected devices
continue continue with autoboot
reboot reboot device normally
reboot-bootloader reboot device into bootloader
help show this help message
options:
-w erase userdata and cache
-s <serial number> specify device serial number
-p <product> specify product name
-c <cmdline> override kernel commandline
-i <vendor id> specify a custom USB vendor id
-b <base_addr> specify a custom kernel base address
-n <page size> specify the nand page size. default: 2048
Ti2 said:
Funny thing happening to me: fastboot devives doens't return serial no. but it does work when I flash ...
Click to expand...
Click to collapse
fastboot devives or fastboot devices?
RangerLG said:
fastboot devives or fastboot devices?
Click to expand...
Click to collapse
The latter of course eheh. Doesn't return serialno, yet yesterday I flashed twrp 2.4 w/o issues.

[GUIDE][BRICKED] [BOOTS ONLY TO RECOVERY][All ASUS TRANFORMERS]

This is a general users guide to unbrick your Transformer tablet.
This guide will help you if your Asus tablet will only boot into recovery
and the command
Code:
adb reboot-bootloader
does not work to get you booted back to bootloader screen ..
If the above command works then skip to the first fastboot command ..
WHAT YOU NEED
An Asus tablet that will only boot into recovery …
Woking adb and fastboot on your PC
Windows drivers (if using Windows)
A fully charged tablet
Asus data cable
Stock firmware blob (from Asus's web site, make sure you get the right one)
_that's bootit.ko (unzipped and placed with fastboot.exe)
Downloads
Asus Stock firmware---MAKE SURE YOU GET THE CORRECT SKU FOR YOUR TRANSFORMER TABLET
click me
_that's bootit.ko----click me
INSTRUCTIONS
Extract your stock firmware in your downloads folder twice...You will see a blob file rename it boot.blob and move it to the same folder as your fastboot.exe or if in linux to your home folder
Unzip the bootit.ko and place it wth the above blob file.
Let start with this command to make sure that your PC can see your table as an ADB device in recovery
Code:
adb devices
OUTPUT
Code:
[email protected] ~ $ adb devices
List of devices attached
015c7d7a445c260c recovery
Then lets push the bootit.ko to the root of the device like this
Code:
adb push bootit.ko /
OUTPUT
Code:
[email protected] ~ $ adb push bootit.ko /
673 KB/s (27690 bytes in 0.040s)
Then lets insmod this .ko file
Code:
adb shell insmod /bootit.ko
This should reboot the tablet into the bootloader menu, lets verifiy.
Once in the bootloader screen lets make sure your PC can see the device in fastboot.
Code:
fastboot devices
OUTPUT
Code:
[email protected] ~ $ fastboot devices
015c7d7a445c260c fastboot
So now its time to erase the misc & cache partitions, as that is most likely the partitions that is making it boot to recovery...
Code:
fastboot erase misc
OUTPUT
Code:
[email protected] ~ $ fastboot erase misc
erasing 'misc'...
OKAY [ 1.021s]
finished. total time: 1.021s
Code:
fastboot erase cache
OUTPUT
Code:
[email protected] ~ $ fastboot erase cache
******** Did you mean to fastboot format this partition?
erasing 'cache'...
OKAY [ 2.096s]
finished. total time: 2.096s
Once these two command run with OKAY as the OUTPUT .
It is time to make sure we can reboot into the bootloader with the hardware buttons
So from where you are at in the bootloader screen use the VOL DOWN & POWER buttons to boot the tab back into the bootloader screen ..
Run these command in fastboot in this order
The next command is to just verify your computer can see your device
Code:
fastboot devices
OUTPUT
Code:
[email protected]:~ > fastboot devices
015d2bbce2501405 fastboot
Code:
fastboot erase system
OUTPUT
Code:
[email protected]:~ > fastboot erase system
******** Did you mean to fastboot format this partition?
erasing 'system'...
OKAY [ 2.954s]
finished. total time: 2.954s
Code:
fastboot erase recovery
OUTPUT
Code:
[email protected]:~ > fastboot erase recovery
erasing 'recovery'...
OKAY [ 1.945s]
finished. total time: 1.945s
Code:
fastboot -w
OUTPUT
Code:
[email protected]:~ > fastboot -w
erasing 'userdata'...
OKAY [ 23.188s]
formatting 'userdata' partition...
Creating filesystem with parameters:
Size: 29618601984
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 7231104
Block groups: 221
Reserved block group size: 1024
Created filesystem with 11/1810432 inodes and 157662/7231104 blocks
sending 'userdata' (139133 KB)...
writing 'userdata'...
OKAY [ 26.358s]
erasing 'cache'...
At this point it will either hangs on erasing 'cache'
Or it will give you an error, either way you will need to
reboot the tablet back into fastboot with the hardware buttons
Once that is done continue on the path
Code:
fastboot erase boot
OUTPUT
Code:
[email protected]:~ > fastboot erase boot
erasing 'boot'...
OKAY [ 1.209s]
finished. total time: 1.209s
Code:
fastboot erase misc
OUTPUT
Code:
[email protected]:~ > fastboot erase misc
erasing 'misc'...
OKAY [ 0.978s]
finished. total time: 0.978s
Code:
fastboot erase cache
OUTPUT
Code:
[email protected]:~ > fastboot erase cache
******** Did you mean to fastboot format this partition?
erasing 'cache'...
OKAY [ 2.843s]
finished. total time: 2.843s
Code:
fastboot -i 0x0B05 flash system boot.blob
During the sending/writing process of this step you will get the blue bar on your screen.....
OUTPUT
Code:
[email protected]:~ > fastboot -i 0x0B05 flash system boot.blob
erasing 'system'...
OKAY [ 2.339s]
sending 'system' (800927 KB)...
OKAY [133.094s]
writing 'system'...
[OKAY [178.036s]
finished. total time: 313.469s
Code:
fastboot -i 0x0B05 reboot
OUTPUT
Code:
[email protected]:~ > fastboot -i 0x0B05 reboot
rebooting...
finished. total time: 0.020s
Let it boot into stock ROM ...
Credits
@_that for his bootit.ko
TEAM CROMBi and TEAM ZOMBi-X @sbdags @hardslog
Troubleshooting
Here is some troubleshooting
Check out this thread for fasboot.exe, adb.exe and driver help ...CLICK ME
@lj50036
A typo on your very first command: adb device?
Edit: What would you recommend if the userdata is corrupted and have only fastboot/adb? fastboot format data-partition? Thanks...
LetMeKnow said:
@lj50036
A typo on your very first command: adb device?
Edit: What would you recommend if the userdata is corrupted and have only fastboot/adb? fastboot format data-partition? Thanks...
Click to expand...
Click to collapse
Fixed let me know if you see anymore ..
Thx @LetMeKnow
LetMeKnow said:
@lj50036
A typo on your very first command: adb device?
Edit: What would you recommend if the userdata is corrupted and have only fastboot/adb? fastboot format data-partition? Thanks...
Click to expand...
Click to collapse
I am going to get to this once you have fastboot back and you can boot with hardware buttons then its just like @Buster99's
guide but there is one very important command that he leaves out ..
I will post the rest of the guide after bit ...
Thx Josh
Here is the original thread where the bootit module was tested for the first time -> http://forum.xda-developers.com/showthread.php?t=2291974
The problem was that the installed recovery was too old and incompatible with the bootloader and so could not access the eMMC at all. The bootloader command to boot to recovery is stored in the MSC partition (mmcblk0p3), and the recovery could not clear it. Since the bootloader checks the MSC partition before checking for volume-down, it is impossible to get to fastboot without some additional kick in the butt (aka "bootit.ko").
The correct bootit.ko file to use is the one in "bootit-bootloader.zip": http://forum.xda-developers.com/attachment.php?attachmentid=1985941&d=1369339132 - the older version turned out to be too weak. Note that this is a zipped kernel module, not a recovery-installable ZIP. You need to unzip it on your PC before adb push.
After making it to the bootloader menu and working fastboot, you can fastboot flash a current version of TWRP and install the custom ROM of your choice. No real need for the stock blob, unless you want to make sure you have the current bootloader and a known working ROM.
Here is another thread where bootit.ko didn't help, maybe it was really a hardware problem. But lots of good background info from me. -> http://forum.xda-developers.com/showthread.php?t=2437376
And here is another success story -> http://forum.xda-developers.com/showthread.php?p=47525770
_that said:
Here is the original thread where the bootit module was tested for the first time -> http://forum.xda-developers.com/showthread.php?t=2291974
The problem was that the installed recovery was too old and incompatible with the bootloader and so could not access the eMMC at all. The bootloader command to boot to recovery is stored in the MSC partition (mmcblk0p3), and the recovery could not clear it. Since the bootloader checks the MSC partition before checking for volume-down, it is impossible to get to fastboot without some additional kick in the butt (aka "bootit.ko").
The correct bootit.ko file to use is the one in "bootit-bootloader.zip": http://forum.xda-developers.com/attachment.php?attachmentid=1985941&d=1369339132 - the older version turned out to be too weak. Note that this is a zipped kernel module, not a recovery-installable ZIP. You need to unzip it on your PC before adb push.
After making it to the bootloader menu and working fastboot, you can fastboot flash a current version of TWRP and install the custom ROM of your choice. No real need for the stock blob, unless you want to make sure you have the current bootloader and a known working ROM.
Here is another thread where bootit.ko didn't help, maybe it was really a hardware problem. But lots of good background info from me. -> http://forum.xda-developers.com/showthread.php?t=2437376
And here is another success story -> http://forum.xda-developers.com/showthread.php?p=47525770
Click to expand...
Click to collapse
Thx _that I did update the OP with the correct bootit.ko ...
lj50036 said:
Thx _that I did update the OP with the correct bootit.ko ...
Click to expand...
Click to collapse
Great stuff! Thanks for this thread Josh!
Now , if I understand this correctly, the insmod command injects a command into the kernel to boot straight to the bootloader before checking misc to break that 'forced reboot to recovery' cycle.
Kinda correct?
In another thread @_that stated once that
Code:
fastboot getvar all
does not return misc as a supported partiton and that
Code:
fastboot erase misc
only "theoretically" erases misc partition. Is that confirmed now?
You guys are great! So much fun to learn this...
I tried to follow this but i get this output:
After pushing bootit.ko to the root and insmod, the transformer reboots directly in the bootloader.
When try fastboot devices, nothing happens just the next line to fill in a command.
Also, when trying then to fastboot erase misc, it hangs with 'waiting for devices'..
lvrijn said:
I tried to follow this but i get this output:
After pushing bootit.ko to the root and insmod, the transformer reboots directly in the bootloader.
When try fastboot devices, nothing happens just the next line to fill in a command.
Also, when trying then to fastboot erase misc, it hangs with 'waiting for devices'..
Click to expand...
Click to collapse
Did you have a working fastboot driver on your PC before you got into this pickle?
Give us a detailed description on why you tried this procedure.
berndblb said:
Did you have a working fastboot driver on your PC before you got into this pickle?
Give us a detailed description on why you tried this procedure.
Click to expand...
Click to collapse
Thanks for the advice.
It was not the driver, if was my fastboot and adb .exe, i think an old version?
I now downloaded from here http://forum.xda-developers.com/showthread.php?t=2588979
And these are working!
So if someone ever have problems command doesn't recognize fastboot commands, its not always the driver! It can also be the fastboot.exe
This transformer is working again !
lvrijn said:
Thanks for the advice.
It was not the driver, if was my fastboot and adb .exe, i think an old version?
I now downloaded from here http://forum.xda-developers.com/showthread.php?t=2588979
And these are working!
So if someone ever have problems command doesn't recognize fastboot commands, its not always the driver! It can also be the fastboot.exe
This transformer is working again !
Click to expand...
Click to collapse
Great to see you up and running...:good:
I did add a Troubleshooting post number 3
The Josh
berndblb said:
Great stuff! Thanks for this thread Josh!
Now , if I understand this correctly, the insmod command injects a command into the kernel to boot straight to the bootloader before checking misc to break that 'forced reboot to recovery' cycle.
Kinda correct?
In another thread @_that stated once that
Code:
fastboot getvar all
does not return misc as a supported partiton and that
Code:
fastboot erase misc
only "theoretically" erases misc partition. Is that confirmed now?
You guys are great! So much fun to learn this...
Click to expand...
Click to collapse
No, I dont think it injects anything into the kernel as there may not even be one in the LNX partition ..
The bootit.ko module comes from the source of the kernel code..
Also the /misc partition is a full partition as shown here ..
Code:
mmcblk0p3
Offset: 1292369920 (0x4d080000)
Size: 2097152 (0x200000)
File system size: 512 * 4096 = 2097152 (fully occupies partition)
Linux rev 1.0 ext3 filesystem
Not mounted
Permissions: GID system can manipulate
Contains: Empty file system
Purpose: Recovery /misc
Referenced by: /system/lib/libandroid_runtime.so recovery ramdisk: /etc/recovery.fstab
Note: File system is referenced in recovery as emmc, not ext3!
Thx Josh
lj50036 said:
No, I dont think it injects anything into the kernel as there may not even be one in the LNX partition ..
Click to expand...
Click to collapse
I think berndblb meant that insmod injects something into the *currently running* kernel, which it does. It's used for loading additional kernel modules, usually drivers. When a module is loaded, its "init" function is called by the kernel so that it can hook its functionality into the proper kernel subsystems. My bootit.ko's init function simply reboots the tablet - without properly terminating processes, unmounting filesystems, etc. - so it should only be loaded when no partitions are mounted.
_that said:
I think berndblb meant that insmod injects something into the *currently running* kernel, which it does. It's used for loading additional kernel modules, usually drivers. When a module is loaded, its "init" function is called by the kernel so that it can hook its functionality into the proper kernel subsystems. My bootit.ko's init function simply reboots the tablet - without properly terminating processes, unmounting filesystems, etc. - so it should only be loaded when no partitions are mounted.
Click to expand...
Click to collapse
Nothing like _that to put you in your place....
lj50036 said:
Nothing like _that to put you in your place....
Click to expand...
Click to collapse
I'm trying to get back to a working recovery. Now I get a cycle of TWRP splash screens. This method looks promising because it appears to rebuild all of the partitions. I can use the Vol Down + Power keys to get to the bootloader (us_epad-10.6.1.14.10-20130801 A03. Can I skip to the fastboot steps? I had Crombi-kk running with rom2sd before I broke something trying to upgrade to zombie-x.
Thanks!
awilson77584 said:
I'm trying to get back to a working recovery. Now I get a cycle of TWRP splash screens. This method looks promising because it appears to rebuild all of the partitions. I can use the Vol Down + Power keys to get to the bootloader (us_epad-10.6.1.14.10-20130801 A03. Can I skip to the fastboot steps? I had Crombi-kk running with rom2sd before I broke something trying to upgrade to zombie-x.
Thanks!
Click to expand...
Click to collapse
You can skip all the way down to the command "fastboot erase misc". It should kick you out of twrp cycling...good luck..:fingers-crossed:
LetMeKnow said:
You can skip all the way down to the command "fastboot erase misc". It should kick you out of twrp cycling...good luck..:fingers-crossed:
Click to expand...
Click to collapse
Thx!
Back up and running! Thanks!!!

Strange behaviour of 51-android.rules file

I've been scratching head all evening trying to solve this, with no luck.
I've added the following lines to the /etc/udev/rules.d/51-android.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee2", MODE="0600", OWNER="paul"
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee0", MODE="0600", OWNER="paul"
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee1", MODE="0600", OWNER="paul"​When I run adb devices, it looks OK
List of devices attached
07c082820f1e64c0 device​And lsusb | grep Google finds the device (although it is identified as a Nexus 4 for some reason)
Bus 001 Device 105: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)​Finally, ls -Rl /dev/bus/usb/001/105 indicates
crw-rw----+ 1 paul audio 189, 104 Nov 11 00:13 /dev/bus/usb/001/105​
But, when I set the phone to bootloader mode by running adb reboot bootloader, and run fastboot devices, I get an empty line.
When I run fastboot flashall -w, I get
< waiting for device >​When I run lsusb, the Google line is no longer displayed.
Also, I see in the /var/log/syslog that the Google device is added when I boot the phone, and is removed when I change to fastboot mode.
On reboot:
Nov 11 00:13:03 LENOVO-W541 kernel: [ 2807.950990] usb 1-2: Product: AOSP on HammerHead
Nov 11 00:13:03 LENOVO-W541 kernel: [ 2807.950992] usb 1-2: Manufacturer: LGE
Nov 11 00:13:03 LENOVO-W541 kernel: [ 2807.950993] usb 1-2: SerialNumber: 07c082820f1e64c0
Nov 11 00:13:03 LENOVO-W541 colord: Device added: sysfs-LGE-AOSP_on_HammerHead​In fastboot:
Nov 11 00:21:08 LENOVO-W541 kernel: [ 3293.100855] usb 1-2: USB disconnect, device number 105
Nov 11 00:21:08 LENOVO-W541 colord: device removed: sysfs-(null)
Nov 11 00:21:08 LENOVO-W541 colord: device removed: sysfs-(null)
Nov 11 00:21:08 LENOVO-W541 colord: device removed: sysfs-LGE-AOSP_on_HammerHead​
Can anyone help? I can't even do something as basic as flashing a new image to the phone.
Paul
Try
Code:
sudo fastboot devices
Found the problem (I think). Seems to be a stupid USB cable problem.
At work, with phone in fastboot/bootloader mode:
$ lsusb | grep Google
Bus 001 Device 098: ID 18d1:4ee0 Google Inc.​There seems to be a bug, because in normal mode, the same command gives:
Bus 001 Device 100: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)​At home, in fastboot mode this command gives nothing, just an empty line.
Similarly, at work, in fastboot mode:
$ fastboot devices
07c082820f1e64c0 fastboot​The same command at home gives:
<waiting for device>​
All with the same phone and laptop, just different cables.
After creating rules, did you reload them? either by rebooting or using udevadm?
What distro are you on?
beekay201 said:
After creating rules, did you reload them? either by rebooting or using udevadm?
What distro are you on?
Click to expand...
Click to collapse
beekay,
Yes, I had reloaded the rules, using sudo /etc/init.d/udev restart
Ubuntu 14.04. problem solved, as I indicated above.

Problem with unlocking XOOM

Hallo
I am trying flash my old XOOM with a custom rom. I was following the guide on
https://forum.xda-developers.com/wiki/Motorola_Xoom/Flashing_Guide
but I get to the point where I shall run the command (Yes I have remember to active USB debugger)
Code:
fastboot oem unlock
but then command returns
Code:
(bootloader) fastboot oem unlock disabled!
FAILED (remote: '')
fastboot: error: Command failed
Some general information about the device:
Model Number: XOOM 2
System version: 77.128.12.MZ615.NonEFIGSRetail.en.EU
Android version: 4.04
Kernel version: 3.0.8-ge2afd25
Build number: 7.7.1-128_MZ615-12
The bootloader information:
Code:
AP Fastboot Flash Mode (S)
0A.74 (sha-db24cb6, 2012-04-25 10:52:50)
eMMC Info: Size 16G
Device is LOCKED, Status Code: 0
Battery OK
OK to Program
Transfer Mode:
USB Connected

Flash phone by using command "fastboot flashall -w" then I can't turn the phone on

Environment:
ubuntu :14.04
android 9 AOSP download : repo init -u https://android.googlesource.com/platform/manifest -b android-9.0.0_r47
source code build Q3B.190801.002
source code tag:android-9.0.0_r47
driver binaries ixel 3a binaries for android 9.0.0(PQ3B.190801.002 )
phone:pixel 3a, Europe, unlocked ( Factory ImageQ3B.190801.002, Aug 2019 )
1、source ./build/envsetup.sh
2、lunch aosp_sargo-userdebug
After the compilation succeeded , I flashed phone by using command "fastboot flashall -w" and the teminal told me that it was successful.
is this a problem?
( target reported max download size of 268435456 bytes Erase successful,
but not automatically formatting.
File system type raw not supported.
Erase successful, but not automatically formatting.
File system type raw not supported. )
When I turned the phone on ,it failed . The phone was all on the state of bootloader and it can not be into the Android. AndI don't know what I could do next.
Could anyone help me solve this ? Please , Please .
sorry for my poor English

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