adb devices shows "unauthorized" and cannot run fastboot flash boot for Fxtec Pro-1 X - F(x)tec Pro1-X Questions & Answers

I just got a new F(x)tec Pro-1X and I want to root it. I'm following the instructions to use Magisk from the F(x)tec team which involves 1) installing Magisk, 2) connecting adb and authorizing, 3) adb pushing the Pro-1X boot.img, 4) Running Magisk and patching the boot.img, and 5) downloading the patched .img.
Then I run "adb reboot bootloader" which leads me to a screen where I can choose Recovery mode and then I get to an Android screen that says "No command". I believe it's here that I'm supposed to run "fastboot flash boot magisk_patched-25200_HsxJg.img"; however, when I run "adb devices", I get unauthorized, and trying to run fastboot anyway fails:
$ adb devices
List of devices attached
8ce396c8 unauthorized
$ fastboot flash boot magisk_patched-25200_HsxJg.img
< waiting for any device >
I found elsewhere that from this screen, I can hold the power button and press the volume up key and then release both and I see the Android recovery screen. Then I scroll down to Enter fastboot and press power to enter that and I see fastbootd, but I get the same "waiting for any device" output if I try the fastboot flash command here.
If I go back to recovery mode, and instead go to Apply update from ADB, I then see the following from adb devices, but I still can't run fastboot flash:
$ adb devices
List of devices attached
8ce396c8 sideload
I'm running the latest Android Studio and platform-tools on a Lenovo X270 running Fedora 37 and Linux kernel 6.0.17. I'm connecting using a USB-2 port without a hub and tried multiple USBC cords.
A commenter on the F(x)tec forums said that he could never get his Lenovo X250 to work and he had to buy a Raspberry Pi 3 model B.
Are there any alternatives or diagnostics I can run to help solve this "unauthorized" error?

Did you enable usb debugging in the developer options and validate the box after connecting with a USB cable?

ze7zez said:
Did you enable usb debugging in the developer options and validate the box after connecting with a USB cable?
Click to expand...
Click to collapse
Yes. That was required for steps 2-4 for pushing and pulling the image. When I did that, I had to authorize my laptop on my phone. There's no such dialog during recovery mode. Is there some way to pre-authorize recovery mode with my laptop, or otherwise disable this authorization?

Option below USB debugging, which is: Revoke USB debugging authorizations.
or
read this:
ADB Android Device Unauthorized
Since I reinstalled Eclipse (simply deleted and downloaded it again) I can't debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fine before reinstallation.
stackoverflow.com

ze7zez said:
Option below USB debugging, which is: Revoke USB debugging authorizations.
or
read this:
ADB Android Device Unauthorized
Since I reinstalled Eclipse (simply deleted and downloaded it again) I can't debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fine before reinstallation.
stackoverflow.com
Click to expand...
Click to collapse
Thanks, but none of that worked. My problem is authorizing during recovery mode, not during normal operations. It seems what I really need is to either modify /data/misc/adb/adb_keys on the device, or run adb disable-verity, or set ro.adb.secure=0, but I don't have permissions to do any of those.
It's interesting that another F(x)tec user says this works with a Raspberry Pi, and also says it does not work with his Lenovo X250 running Linux, which is similar to my laptop. This suggests there's some sort of limitation or additional security related to the Linux kernel 6.0.17 and/or Fedora, but I can't find what that is or how to diagnose it. I don't have SELinux running on my laptop.

Good day,
I'm use adb tools from my fedora 37
Your issue is related to how you call adb.
Try this:
adb kill-server
sudo adb start-server
sudo adb devices
The same game with fastboot tools
Its works perfect with selinux on
Regards

MoHuToP said:
Good day,
I'm use adb tools from my fedora 37
Your issue is related to how you call adb.
Try this:
adb kill-server
sudo adb start-server
sudo adb devices
The same game with fastboot tools
Its works perfect with selinux on
Regards
Click to expand...
Click to collapse
Doesn't work:
$ adb kill-server
$ sudo -i
# adb start-server
* daemon not running; starting now at tcp:5037
* daemon started successfully
# adb devices
List of devices attached
8ce396c8 device
# adb reboot bootloader
... Wait for recovery mode "no command" screen ...
# adb devices
List of devices attached
8ce396c8 unauthorized
# fastboot flash boot magisk_patched-25200_HsxJg.img
< waiting for any device >

For reference, attached are pictures of all the places where I try the commands and they fail.

I bought a Raspberry Pi 3 B and microSD, installed Raspbian, installed adb and fastboot, connected to phone (normal boot), authorized the Pi, ran adb reboot bootloader, entered recovery mode, phone goes to "No command" screen, but then I get a popup on my Raspberry Pi desktop that says:
Unable to open MTP device "001,013"
Clicked OK and ran adb devices, and I'm back to the "unauthorized" status and adb and fastboot don't work. Tried this in the Raspberry Pi as both a normal user and root (with adb kill-server in between).
Tried with another USB C cable and got a similar error, although it ended with "001,016".
Any ideas?

Resolved by running fastboot on the START screen! (And worked through my X270)

Related

[Q] Sprint optik can't switch to USB Debugging mode after flashing kernel

Hello,everyone.I've got a Sprint optik(zte v55) 7" pad coming with HC 3.2.
After I flash a modified kernel, Its usb debugging mode can't work properly and my pc can't recgonize it.
Before I flash the kernel, when I switched to usb debugging mode and connect to my pc(runing win7), v55 will display a icon in taskbar showing it's connected with pc, my pc will show a new driver that showing the dirs and files in v55's internal storage, and when I run command "adb devices", it will show v55 is connected.
now, all the above is not happening anymore.
The thing is : I use 'adb reboot bootloader' and 'fastboot boot CWMrecovery.img' to flash the kernel in, which means the adb.exe and fastboot.exe can work before I flahsed the kernel, and now they can't work.So I think maybe it's the kernel cause v55's usb can't work ?
Forgot to metion: now, when boot into android system or recovery mode, I can't use 'adb devices' to discover the device;when I boot in ftm mode(which I don't know what it is),sometimes 'adb devices' print 'xxxxx offline' , sometimes print 'xxxx recovery'.
when print 'xxx recovery', I use 'adb reboot bootloader' , v55 enter black screen with back light which seems in bootloader mode, but 'fastboot devices' and 'fastboot boot CWMrecovery.img' are not working.Very strange.
Click to expand...
Click to collapse
Can anybody know what should I do now ? My intention is to root and flash CM10 to v55,and can be recongize by my pc again.
The kernel I flashed into is in http://forum.xda-developers.com/showthread.php?t=1473555,kernel #60 for v55.
mdky said:
Hello,everyone.I've got a Sprint optik(zte v55) 7" pad coming with HC 3.2.
After I flash a modified kernel, Its usb debugging mode can't work properly and my pc can't recgonize it.
Before I flash the kernel, when I switched to usb debugging mode and connect to my pc(runing win7), v55 will display a icon in taskbar showing it's connected with pc, my pc will show a new driver that showing the dirs and files in v55's internal storage, and when I run command "adb devices", it will show v55 is connected.
now, all the above is not happening anymore.
Can anybody know what should I do now ? My intention is to root and flash CM10 to v55,and can be recongize by my pc again.
The kernel I flashed into is in http://forum.xda-developers.com/showthread.php?t=1473555,kernel #60 for v55.
Click to expand...
Click to collapse
Hi, here are some things to keep in mind when using adb.
Be sure of the command you are issuing
Insure you are in fact cd'd to wherever on your pc the adb binary is located
Insure your jdk is included in your path on your pc
To make things easier you can always also add the tools and platform-tools folder of the android sdk to your path
Lets make sure you are properly set up first before you start flashing things randomly.
For more info, you should check Android's page on ADB if you would like. http://developer.android.com/tools/help/adb.html
I'm not sure if any of this is actually directly related to your issue, but it is nice to start with the basics.
wildstang83 said:
Hi, here are some things to keep in mind when using adb.
Be sure of the command you are issuing
Insure you are in fact cd'd to wherever on your pc the adb binary is located
Insure your jdk is included in your path on your pc
To make things easier you can always also add the tools and platform-tools folder of the android sdk to your path
Lets make sure you are properly set up first before you start flashing things randomly.
Click to expand...
Click to collapse
Thank you for reply.
The adb command I use is install by v55's driver.Everytime I use adb, I always go into the driver's dir (C:\Program Files\ZTE Tablet V55 USB Driver) which adb.exe is in.
And this dir is in my path.
The thing is : I use 'adb reboot bootloader' and 'fastboot boot CWMrecovery.img' to flash the kernel in, which means the adb.exe and fastboot.exe can work before I flahsed the kernel, and now they can't work.So I think maybe it's the kernel cause v55's usb can't work ?
Forgot to metion: now, when boot into android system or recovery mode, I can't use 'adb devices' to discover the device;when I boot in ftm mode(which I don't know what it is),sometimes 'adb devices' print 'xxxxx offline' , sometimes print 'xxxx recovery'.
when print 'xxx recovery', I use 'adb reboot bootloader' , v55 enter black screen with back light which seems in bootloader mode, but 'fastboot devices' and 'fastboot boot CWMrecovery.img' are not working.Very strange.
mdky said:
Thank you for reply.
The adb command I use is install by v55's driver.Everytime I use adb, I always go into the driver's dir (C:\Program Files\ZTE Tablet V55 USB Driver) which adb.exe is in.
And this dir is in my path.
The thing is : I use 'adb reboot bootloader' and 'fastboot boot CWMrecovery.img' to flash the kernel in, which means the adb.exe and fastboot.exe can work before I flahsed the kernel, and now they can't work.So I think maybe it's the kernel cause v55's usb can't work ?
Forgot to metion: now, when boot into android system or recovery mode, I can't use 'adb devices' to discover the device;when I boot in ftm mode(which I don't know what it is),sometimes 'adb devices' print 'xxxxx offline' , sometimes print 'xxxx recovery'.
when print 'xxx recovery', I use 'adb reboot bootloader' , v55 enter black screen with back light which seems in bootloader mode, but 'fastboot devices' and 'fastboot boot CWMrecovery.img' are not working.Very strange.
Click to expand...
Click to collapse
Ooook now we're getting somewhere, I think
Make sure when you send your fastboot flash command you send it like so:
Code:
fastboot flash recovery recovery.img
Replace 'recovery.img' with the actual name of the img, whatever it is.
Also if you are getting the device offline error try killing server:
Code:
adb kill-server
and then restart it
Code:
adb start-server
See if that helps.
wildstang83 said:
Ooook now we're getting somewhere, I think
Make sure when you send your fastboot flash command you send it like so:
Code:
fastboot flash recovery recovery.img
Replace 'recovery.img' with the actual name of the img, whatever it is.
Also if you are getting the device offline error try killing server:
Code:
adb kill-server
and then restart it
Code:
adb start-server
See if that helps.
Click to expand...
Click to collapse
I will try these command when I get home, thank u!:good:
"adb kill-server" and "adb start-server" works fine.They turn v55's "adb devices" from "offline" to "recovery".
And I run command "adb reboot-bootloader", it seems that v55 is in bootload mode.
But after that,I run command "fastboot flash recovery CWMrecovery.img",it returns '<waiting for device>' and stuck there.
Before I flash the kernel #60, I can run "fastboot boot CWMrecovery.img" to boot to cwm,so I think it's not likely be the driver's problem,am I right?
mdky said:
"adb kill-server" and "adb start-server" works fine.They turn v55's "adb devices" from "offline" to "recovery".
And I run command "adb reboot-bootloader", it seems that v55 is in bootload mode.
But after that,I run command "fastboot flash recovery CWMrecovery.img",it returns '<waiting for device>' and stuck there.
Before I flash the kernel #60, I can run "fastboot boot CWMrecovery.img" to boot to cwm,so I think it's not likely be the driver's problem,am I right?
Click to expand...
Click to collapse
Sorry to take so long to reply. I think it is not a driver issue. Do you know if debugging/adb is even enabled in the ramdisk? This generally would have to be done by the dev who created the kernel. Speaking of that, have you tried to contact that dev for further support? For sure they would know more than me since I don't own the device myself. I just know enough to be slightly dangerous, lol
wildstang83 said:
Sorry to take so long to reply. I think it is not a driver issue. Do you know if debugging/adb is even enabled in the ramdisk? This generally would have to be done by the dev who created the kernel. Speaking of that, have you tried to contact that dev for further support? For sure they would know more than me since I don't own the device myself. I just know enough to be slightly dangerous, lol
Click to expand...
Click to collapse
It's very nice of you to keep help me here ,thanks again:good:!
After keep trying in past two days, I found that in ftm mode adb is enabled, and 'adb reboot bootloader' truly made the device into bootloader mode.
On my win7 pc, It can't be recognized.I switch to my old xp pc,and install the driver come from other zte user,and then...fastboot works.
Now I have the v55 running CM10,Awesome!Thanks to all contributors.
Still, my win7 pc and xp pc can't recognize my v55 through usb.But it's not big deal now.I can use tf and wifi and other ways to transfer file to v55.
mdky said:
It's very nice of you to keep help me here ,thanks again:good:!
After keep trying in past two days, I found that in ftm mode adb is enabled, and 'adb reboot bootloader' truly made the device into bootloader mode.
On my win7 pc, It can't be recognized.I switch to my old xp pc,and install the driver come from other zte user,and then...fastboot works.
Now I have the v55 running CM10,Awesome!Thanks to all contributors.
Still, my win7 pc and xp pc can't recognize my v55 through usb.But it's not big deal now.I can use tf and wifi and other ways to transfer file to v55.
Click to expand...
Click to collapse
Oh wow, that is quite the ordeal, but atleast its something huh, lol
I wonder if you could run adb and fastboot commands in xp mode on your win7 pc?
I know there is a way to run programs in XP mode, its just been awhile since I've done it.
And its no problem to keep trying to help, even if I don't know the device and all that. Maybe I can learn to while we are at it, and maybe make a new friend along the way

Trying to apply Nexus 6P bootloop fix

Downloaded and installed ADB. Following tutorial here:
https://www.xda-developers.com/nexus-6p-bootloop-fix/
Specifically:
- Connect your smartphone or tablet to your computer with a USB cable. Change the USB mode to “file transfer (MTP)” mode. Some OEMs may or may not require this, but it’s best to just leave it in this mode for general compatibility.
- In the Command Prompt window, enter the following command to launch the ADB daemon: adb devices
- On your phone’s screen, you should see a prompt to allow or deny USB Debugging access. Naturally, you will want to grant USB Debugging access when prompted (and tap the always allow check box if you never want to see that prompt again).install adb
- Finally, re-enter the command from step #6. If everything was successful, you should now see your device’s serial number in the command prompt. Yay! You can now run any ADB command on your device! Now go forth and start modding your phone by following our extensive list of tutorials!
https://www.xda-developers.com/install-adb-windows-macos-linux/
I did all the above. But don't see anything from:
C:\ADB>fastboot devices
C:\ADB>fastboot flash boot 6p48C.img
< waiting for any device >
Nexus 6P was plugged into the USB cable on Win10 machine. Am in MTP mode. Most recent Google USB drivers installed.
I have done OEM Unlock in setup|Developer options. I have also turned on USB debugging in same options.
I am [obviously] lost. Anyone know what else I might try?
OK, I have made a little progress messing around on my own. It seems that running from the CMD line in Win 10, ADB command works but Fastboot does not. WHY? Bith are in the same directory.
If I type Fastboot by itself, then I get a list of the associated parameters, which means that the CMD system DOES recognize the Fastboot command.
Now, if I run CMD====> "ADB devices", it looks like my device is recognized and attached (that is my serial# below).
But if I try CMD=====> "Fastboot devices", as the instructions require, I get nothing. And if I try to run the flash job via Fastboot, that does not work either.
==================
C:\ADB>adb devices
List of devices attached
8XV5Txxxxxxxxxxx device
C:\ADB>fastboot flash boot 6p48C.img
< waiting for any device >
===================
Wondering if I need to install the Android SDK on Windows for this process to work?
I Think You need to Redo The process from Step One.
I Heard about This and Never Did An OTA.
If it Persists Try Using A Different PC and If After That It doesn't work Then Yes Android SDK is The last Option.
Sent from my Nexus 6P using Tapatalk
Solved. I needed to add the ADB install directory to the environmental path. Don't quite understand why, but doing so allowed me to get the problem fixed.

Change the SMS Limit on Android

Never actually got it done, But see the last post for a workable solution.
Hi all.
The basics:
Device Samsung Galaxy Tab A SM-T295 android 9 PC WIN 7 PRO
Trying to do this >> https://www.xda-developers.com/change-sms-limit-android/
Started this >>> https://www.xda-developers.com/install-adb-windows-macos-linux/
Got this:
I have the USB DEBUGGUNG turned on.
I get the COMMAND WINDOW open
I enter "adb devices" and I get a result
list of devices attached
Enter again and it doesn't show a serial number.
If command
Code:
adb devices
doesn't bring up any device, then an USB connection isn't successfully established. Read here how to fix it.
If device got successfully connected you get its serial-number entering command
Code:
adb shell getprop ^| grep ro.boot.serialno
jwoegerbauer said:
If command
Code:
adb devices
doesn't bring up any device, then an USB connection isn't successfully established. Read here how to fix it.
If device got successfully connected you get its serial-number entering command
Code:
adb shell getprop ^| grep ro.boot.serialno
Click to expand...
Click to collapse
OK. Since running "adb devices" returned "list of connected devices",, that would seem to indicate that the adb did start.
But as a test I will do the following from the other thread:
Type in cmd
adb kill-server
adb start-server
Click to expand...
Click to collapse
A lot of that other thread seems to be directed at LINUX users and the thread starter was working on a rooted device which I do not have.
Going to do this
run cmd as Administrator
Click to expand...
Click to collapse
too.
This looks promising so after the above I will try it:
it's so easy, just turn off your android device, then hold down both "Volume Down" key and "Power" at the same time, wait a few seconds till it start in recovery mode, done.
now type adb devices, and you'll see your device.
Click to expand...
Click to collapse
Back later
Cut_Right_Sharpening said:
OK. Since running "adb devices" returned "list of connected devices",, that would seem to indicate that the adb did start.
But as a test I will do the following from the other thread
Back later
Click to expand...
Click to collapse
OK.
Got this from everything except going into recovery mode.
C:\Users\790W7\Downloads\TAB A Stuff\platform-tools_r29.0.6-windows\platform-too
ls>adb kill-server
C:\Users\790W7\Downloads\TAB A Stuff\platform-tools_r29.0.6-windows\platform-too
ls>adb server
C:\Users\790W7\Downloads\TAB A Stuff\platform-tools_r29.0.6-windows\platform-too
ls>adb shell getprop ^| grep ro.boot.serialno
error: no devices/emulators found
Click to expand...
Click to collapse
Cut_Right_Sharpening said:
OK. Since running "adb devices" returned "list of connected devices",, that would seem to indicate that the adb did start.
This looks promising so after the above I will try it:
it's so easy, just turn off your android device, then hold down both "Volume Down" key and "Power" at the same time, wait a few seconds till it start in recovery mode, done.
now type adb devices, and you'll see your device.
Back later
Click to expand...
Click to collapse
Ok this is what I got in recovery mode on the Tab A
https://drive.google.com/open?id=1SCYtbrZKnnfrkNVP34S-H9Jq0SQHSYqj
Still getting this from the CMD WINDOW
C:\Users\790W7\Downloads\TAB A Stuff\platform-tools_r29.0.6-windows\platform-too
ls>adb shell getprop ^| ro.boot.serialno
error: no devices/emulators found
C:\Users\790W7\Downloads\TAB A Stuff\platform-tools_r29.0.6-windows\platform-too
ls>
Click to expand...
Click to collapse
@Cut_Right_Sharpening
Is the device shown with a yellow exclamation mark in the Windows device manager when in recovery mode? If so then look inside device's build.prop file - it's located in directory /system:
ro.adb.secure mut be set to 0
and
ro.debuggable must be set to 1
to allow the device gets ADB accessed in both the recovery mode and the normal mode.
BTW:
Wondering why the hell you started the device in recovery mode to access it via ADB? Noone does so, me included.
jwoegerbauer said:
@Cut_Right_Sharpening
Is the device shown with a yellow exclamation mark in the Windows device manager when in recovery mode? If so then look inside device's build.prop file - it's located in directory /system:
ro.adb.secure mut be set to 0
and
ro.debuggable must be set to 1
to allow the device gets ADB accessed in both the recovery mode and the normal mode.
BTW:
#1 Wondering why the hell you started the device in recovery mode to access it via ADB? Noone does so, me included.
Click to expand...
Click to collapse
#1 Because that was one of the suggestions by this guy https://forum.xda-developers.com/member.php?u=5498377 in the thread I was sent to by the first poster.
Yes, The SM-T295 has the exclamation mark.
If so then look inside device's build.prop file - it's located in directory /system:
ro.adb.secure mut be set to 0
and
ro.debuggable must be set to 1
to allow the device gets ADB accessed in both the recovery mode and the normal mode.
Click to expand...
Click to collapse
With WHAT????
@Cut_Right_Sharpening
This is my last post here: Honestly, I have no lust telling you how to successfully run ADB - this may do others here.
What you should know:
1.
Especially for Samsung devices a device-relevant USB driver for Windows OS provided by Samsung Co.Ltd. exists. Hint: Install the one that matches your device, don't further on make use of the obscure one you've already installed.
2.
ADB needs neither the device to be rooted ( unless you want to perform system relevant operations such as modifying system properties ) nor to be run as Administrator nor something else.
3.
Running Android in recovery mode only is useful if you want to perform system maintenance operations, such as
a) reboot system
b) apply update from SD card
c) apply update from cache
d) wipe data/factory reset
e) backup user data
f) restore user data
Note that on stock recovery the ADB utility only registers that the device is connected. When you try applying adb shell or any other thing you'll get an error: it only accepts adb push commands to the device.
Good luck.
jwoegerbauer said:
@Cut_Right_Sharpening
This is my last post here: Honestly, I have no lust telling you how to successfully run ADB - this may do others here.
Good luck.
Click to expand...
Click to collapse
Well, The link to the Drivers may someday be very useful.
I am going to change the thread line to indicate I have given up. There may be people that have the knowledge to do this, but I suspect Google has been working overtime to make it nearly impossible without rooting and I am not ready to go that far.
Should someone else stumble on this thread, it looks like my solution is going to be HitEmUp APP . Not exactly a fully automatic Bulk mailer, but I think it will work for what I want as long as I stay under the 30 SMS/30Minute limit.

ADB commands to power up a phone without button keys and adb enabled

Hi, I have a Xiaomi phone with the 3 buttons apparently broken.
I'm trying the adb commands to power up the phone, but unfortunately I don't have the adb enabled on the device (infact when I try to use the command "adb reboot" the system gives me the message "device unautorized").
do anyone knows how to use the adb commands to enable the adb on the phone to power up again?
thank you very much (I'm so depreeeeessed)
ADB ( read: ADB daemon ) is part of Android OS.. Thus it should be obvious when Android isn't running you can't run any ADB command where it doesn't matter whether USB debugging got enabled or not.

How to get Android Bootloader Interface with a cube U30 GT C4H

Hi,
I am new in this topic and not a great geek ans please excuse mi for my aprroximative english ! but i am trying to convert an old cube tablet to a domotic tablet. So i have to flash the old rom to a newer like lineageos for example.
So the tablet is an U30GT C4H with android 4.2.2 and the original rom.
I connect the device to my Mac Os and with adb tools (from plateform tools find here) and terminal i wrote adb devices (tablet on) i see the device. OK
When i command fastboot devices, nothing, no line
When i command adb reboot-bootloader, the tablet take off and the screen keep black. With the terminal fastboot devices, no response, with adb devices command > List of devices attached but no more, no device.
With this tablet it is possible to start in recovery mode with power + audio down but with this option i have the android logo and no command. If i take power on no change.
If with adb command and tablet on, i write adb reboot recovery, the tablet restart and the screen see logo android and no command.
I know this kind of topic do not interese a lot of people but i would like use this cube for my house to command domotic (music, heaters etc..). More, i think it's a shame not to recycle this type of device for the planet !!!
Thanx
Fastboot only works if in your tablet's Android's Settings -> Developer options the option OEM unlock got enabled and tablet got restarted afterwards.
i don't see any option OEM in the menu developer
I found that the solution is use slideload protocol. I reseted the tablet and now i get recovery mode. Then i can connect the tablet to my Mac and use terminal with slideload lines. OK
But each time the process failed with rom i found on the net...
Is there an universal rom !!!
Any idea ?
You don't have to boot the device into Recovery mode:
Code:
adb devices
adb reboot sideload
adb sideload <PROPERLY-SiIGNED-FILE.ZIP>
adb reboot
BTW: adb sideload is meant to re-flash Stock ROMs only.
jwoegerbauer said:
You don't have to boot the device into Recovery mode:
Code:
adb devices
adb reboot sideload
adb sideload <PROPERLY-SiIGNED-FILE.ZIP>
adb reboot
BTW: adb sideload is meant to re-flash Stock ROMs only.
Click to expand...
Click to collapse
maybe the issue is the rom i doawnloaded ?
it is kasty-cube_u30gt_h-411-111-rooted4_4gb.zip
or
kasty-cube_u30gtc4-441-20131212-rooted4.zip
both failed.
Perhaps i have to unlock the bootloader as you said but i don't know
I'm pretty sure the 2 mentioned ROMs are a Custom ROM. Hence you can't use adb sideload method to flash them. To install a Custom ROM it's required that a Custom Recovery already got installed on device's Android.
I don't find any way to instal a recovery. I had arctools.zip but the app failed to acess to the SD disk or internal storage...

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