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Help with fastboot ubuntu

does anyone know where to get help with fastboot in ubuntu? i have tried flashing a recovery image to my Dell Streak 7, but it keeps failing. fastboot is working, and when i send the command "fastboot reboot" it works fine. however, "fastboot devices" returns "????????????". when i try to flash the recovery, i get
"sending 'recovery' (3654 KB)...
FAILED (command write failed (No such device))
finished. total time: 0.000s"
"fastboot getvar version" returns version: LG7 0.4
so i know fastboot is working, and that it has at least some communication with the tablet, but something is not quite working. any ideas?

SOLVED
i'm not sure what happened differently, but i plugged the tablet into a different USB port, and then i got a max-download-size error when flashing the recovery. i came across another post that said to use "fastboot -S 0 flash..." to resolve that error, and it worked. everything seems to be good now

[Q] Not quite Bricked, but can't get anything but Fastboot

Ok, so I'll be the first to admit, I'm a bit new to all this.... I figured I was following directions, but something went amiss...
I was working through the process to put CM11 on my Razr i (which had the soak of 4.4.2 from Motorola on it...).
I unlocked the bootloader, rooted it, (but of course never made a back-up). I was able to put in TWRP into the recovery partition and attempt to flash the OS zip image - which failed.
In that thread, there were many options to try, which I did, and eventually my phone will either get stuck at the "Warning - Bootloader Unlocked" screen, or if I reboot with Power/VolDown I can get into Fastboot. But every option in Fastboot menu just reboots the phone.
I can get to the phone with Fastboot from the PC through USB - and it *looks* like I can re-flash different recovery images, but nothing seems to change. The Lebobo flasher will not flash to the device at all - keeps saying "waiting for device" with any option. I have the Motorola USB drivers loaded.
Not sure what else to try.....

Check your drivers again and even reinstall them. U will need the Motorola ones and maybe even the Google ones.
The lebobo flasher uses the 'fastboot' executable to interact with the phone in fastboot. Get a copy off the fastboot exe from the Index thread in the general section. If u have the fastboot.exe or 'fastboot' binary if u are on linux then reboot your phone in bootloader mode. Open a commandprompt in the directory where u have the fastboot executable (shift+right mouse button). Now do the command "fastboot devices" if your device shows up in it the drivers are correctly installed. If it doesn't it not. If it does, install a recovery by using the command "fastboot flash recovery recovery.img" assuming u renamed the recovery image to recovery.img.

i have the same probleme , my motorola razr i is stuck on warning ......... help me pleas:crying:

Verified Moto driver installed (reinstalled).
fastboot.exe is latest from Android SDK - api 21 version
fastboot devices shows "TA237059P0 fastboot"
fastboot flash recovery recovery.img looks like it works. on the PC says "OKAY" and finished. On the phone says Downloading.... then Flashing recovery ... but just sits there. Tried with 2 different Recovery images.
Forgot to mention - in command window on PC, when I use above commend - first thing that comes back "(bootloader) Variable not supported!"
If I use fastboot menu on the phone to then go to Recovery, the phone reboots and sits at the Warning screen again.
Lelobo still says "waiting for device" even though command line fastboot seems to connect to the device.

Wipe cache through fastboot and try again. It van help

fastboot -w give the following....
(bootloader) Variable not supported!
Erase successful, but not automatically formatting.
Can't determine partition type.
FAILED (remote failure)
(bootloader) Variable not supported!
Erase successful, but not automatically formatting.
Can't determine partition type.
FAILED (remote failure)
erasing 'userdata'...
(bootloader) Creating EXT4 FileSystem for userdata
OKAY [ 13.707s]
erasing 'cache'...
(bootloader) Creating EXT4 FileSystem for cache
OKAY [ 2.902s]
finished. total time: 16.614s​
Then flashing recovery behaves same as above, except when I select it in the Fastboot menu, the phone just shuts off now (tried different recovery, now it reboots, stuck at Warning)

ccallana said:
fastboot -w give the following....
(bootloader) Variable not supported!
Erase successful, but not automatically formatting.
Can't determine partition type.
FAILED (remote failure)
(bootloader) Variable not supported!
Erase successful, but not automatically formatting.
Can't determine partition type.
FAILED (remote failure)
erasing 'userdata'...
(bootloader) Creating EXT4 FileSystem for userdata
OKAY [ 13.707s]
erasing 'cache'...
(bootloader) Creating EXT4 FileSystem for cache
OKAY [ 2.902s]
finished. total time: 16.614s​
Then flashing recovery behaves same as above, except when I select it in the Fastboot menu, the phone just shuts off now (tried different recovery, now it reboots, stuck at Warning)
Click to expand...
Click to collapse
Success!! used "fastboot erase cache" instead.... then flashed in the suggested Newbie recovery on page 1 of the CM11 thread. adb wouldn't sideload the modded image, so I stuck it on an sd card and loaded it from there... and voila, it is booting!

[Q] Unable to use fastboot

After installing B126 in my rooted P7 I'm unable to use fastboot although the phone shows unlocked bootloader in the screen.
Code:
$ sudo adb reboot bootloader
$ sudo fastboot devices
???????????? fastboot
The device seems unrecognised and when I try to flash or boot anything I get the following error:
Code:
FAILED (remote: Command not allowed)
On the other hand I'm able to reboot via fastboot command.
I'm using linux and running fastboot and adb as root in order to ensure I have permissions to access to de device although this shouldn't be necesary.
Why could this be happening?
Thanks in advance.

I've been trying other things with no success.
I've installed windows on a VM and rebooted the phone into fastboot mode. When I try to list devices in fastboot I get the '?' answer as if the phone wasn't recognised.
Device drivers seem to be installed as no missing drivers appear in the device manager.
How can I fix this?
Thanks in advance!
UPDATE: Added some more info
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot.exe oem get-bootinfo
...
(bootloader) unlocked
OKAY [ 0.016s]
finished. total time: 0.016s
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot.exe getvar all
getvar:all FAILED (remote: Command not allowed)
finished. total time: 0.017s

antoniovazquezblanco said:
After installing B126 in my rooted P7 I'm unable to use fastboot although the phone shows unlocked bootloader in the screen.
Code:
$ sudo adb reboot bootloader
$ sudo fastboot devices
???????????? fastboot
The device seems unrecognised and when I try to flash or boot anything I get the following error:
Code:
FAILED (remote: Command not allowed)
On the other hand I'm able to reboot via fastboot command.
I'm using linux and running fastboot and adb as root in order to ensure I have permissions to access to de device although this shouldn't be necesary.
Why could this be happening?
Thanks in advance.
Click to expand...
Click to collapse
Did you make the
Code:
/etc/udev/rules.d/51-android.rules
file? It is necessary to create it with the correct information to make ADB work on Linux.
If you don't have the file, read this: http://askubuntu.com/questions/213874/how-to-configure-adb-access-for-android-devices
The first answer explains how to create the file. You don't need to be root to use ADB by the way.

g4b3rm4n said:
Did you make the
Code:
/etc/udev/rules.d/51-android.rules
file? It is necessary to create it with the correct information to make ADB work on Linux.
If you don't have the file, read this: http://askubuntu.com/questions/213874/how-to-configure-adb-access-for-android-devices
The first answer explains how to create the file. You don't need to be root to use ADB by the way.
Click to expand...
Click to collapse
Thank you very much for your time and patience!
AFAIK changing udev rules only lets you use the USB devices with your regular user avoiding the need of elevated permissions. Anyway, because I had nothing to loose I've tryed the solution you adviced. Here are the results...
After creting the udev rules for my user I no longer need to use the sudo command for getting results with adb or fastboot, which was expected, but I keep getting the "Command not allowed" with fastboot.
Code:
$ fastboot oem ?
...
FAILED (remote: Command not allowed)
finished. total time: 0.000s
$ fastboot oem get-bootinfo
...
(bootloader) unlocked
OKAY [ 0.000s]
finished. total time: 0.000s
$ fastboot getvar ?
getvar:? FAILED (remote: Command not allowed)
finished. total time: 0.000s
$ fastboot getvar all
getvar:all FAILED (remote: Command not allowed)
finished. total time: 0.000s
On the other hand, fastboot devices now returns something interesting...
Code:
$ fastboot devices
0123456789ABCDEF fastboot
Any other hint?
Thanks in advance!

antoniovazquezblanco said:
Thank you very much for your time and patience!
AFAIK changing udev rules only lets you use the USB devices with your regular user avoiding the need of elevated permissions. Anyway, because I had nothing to loose I've tryed the solution you adviced. Here are the results...
After creting the udev rules for my user I no longer need to use the sudo command for getting results with adb or fastboot, which was expected, but I keep getting the "Command not allowed" with fastboot.
Code:
$ fastboot oem ?
...
FAILED (remote: Command not allowed)
finished. total time: 0.000s
$ fastboot oem get-bootinfo
...
(bootloader) unlocked
OKAY [ 0.000s]
finished. total time: 0.000s
$ fastboot getvar ?
getvar:? FAILED (remote: Command not allowed)
finished. total time: 0.000s
$ fastboot getvar all
getvar:all FAILED (remote: Command not allowed)
finished. total time: 0.000s
On the other hand, fastboot devices now returns something interesting...
Code:
$ fastboot devices
0123456789ABCDEF fastboot
Any other hint?
Thanks in advance!
Click to expand...
Click to collapse
Well, the bootloader seems to be fine and the fastboot ID "0123456789ABCDEF" seems to be also OK (according to this thread it means "the device is in fastboot mode"). My guess is a permission problem - is the device rooted? Also, this thread's resolution for this error message was turning debugging mode on - so you might want to check that too

g4b3rm4n said:
Well, the bootloader seems to be fine and the fastboot ID "0123456789ABCDEF" seems to be also OK (according to this thread it means "the device is in fastboot mode"). My guess is a permission problem - is the device rooted? Also, this thread's resolution for this error message was turning debugging mode on - so you might want to check that too
Click to expand...
Click to collapse
My device is in B609 not rooted because the method used still not very convincing to me... Could it be this?
Debugging is enabled...
Thank you very much!

antoniovazquezblanco said:
My device is in B609 not rooted because the method used still not very convincing to me... Could it be this?
Debugging is enabled...
Thank you very much!
Click to expand...
Click to collapse
If think yes, it might be. It surely looks like a permission problem, and since you are not rooted, it could be that those commands can't be used.
Rooting B609 was pretty hard for me - I flashed the bootloader of B608, then used CWM to flash SU, and then I was 100 percent rooted. If you don't want to root your phone, I'll try tomorrow (or later today - it's 0:50 here and see if fastboot commands work properly when rooted. What commands should I try?

g4b3rm4n said:
If think yes, it might be. It surely looks like a permission problem, and since you are not rooted, it could be that those commands can't be used.
Rooting B609 was pretty hard for me - I flashed the bootloader of B608, then used CWM to flash SU, and then I was 100 percent rooted. If you don't want to root your phone, I'll try tomorrow (or later today - it's 0:50 here and see if fastboot commands work properly when rooted. What commands should I try?
Click to expand...
Click to collapse
Is this also happening to you?
I would like to be able to use fastboot boot for some kernel testing... It seems there's source code for kernel building both from Huawei and the comunity and it would be nice to have a free kernel as a base for cm devel...
It is also 00:50 here (Spain)... Tomorrow will be another day, no hurry

1. After editing udev rules, fastboot recognizes your device correctly ('fastboot devices' returns your device's SN).
2. Presence of su doesn't affect on work of fastboot anyhow.
3. You can't use 'fastboot boot' command because it's not supported. Huawei's bootloader supports very limited set of commands.

Kostyan_nsk said:
1. After editing udev rules, fastboot recognizes your device correctly ('fastboot devices' returns your device's SN).
2. Presence of su doesn't affect on work of fastboot anyhow.
3. You can't use 'fastboot boot' command because it's not supported. Huawei's bootloader supports very limited set of commands.
Click to expand...
Click to collapse
Thank you Kostyan_nsk! I really appreciate you sharing your knowledge .
About 2 I thought the same but I was not sure... so why not trying...
About 3 do you know what are the supported commands or where to find that information? It would be nice to have a post in the developers section with some documentation for those who want to perform tests with the device .

Root Assistance RP2 Android 9 pie, latest updates.

Got my bootloader unlocked, but when trying to flash or unlock critical I get an error and it goes to a screen with the razer logo, "powered by android" at the bottom, and super small text in the upper left "press any key to shutdown"
and shows this in the cmd window:
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flashing unlock_critical
< waiting for any device >
...
FAILED (command write failed (No error))
finished. total time: 0.027s
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash boot_a arter97-kernel-r9-20190607.img
< waiting for any device >
target didn't report max-download-size
sending 'boot_a' (30140 KB)...
FAILED (command write failed (No error))
finished. total time: 0.011s
I do have the full sdk package and used android studios sdk manager to get the latest google usb driver.
HTML:
EDIT: Also I'm on a global version (bought it on razer's website)

Download any version of the firmware available on the Razer developer portal then run the flash-all script. Once that's done, flash boot and system images separately on both partitions just to be on the safe side. Your phone should be able to boot normally after that. Just run setup, flash arter97's kernel, boot into TWRP and try to enter your lock code (odds are this'll fail), then reboot into TWRP, this time your password/lock code should work, then flash Magisk

blackknightavalon said:
Download any version of the firmware available on the Razer developer portal then run the flash-all script. Once that's done, flash boot and system images separately on both partitions just to be on the safe side. Your phone should be able to boot normally after that. Just run setup, flash arter97's kernel, boot into TWRP and try to enter your lock code (odds are this'll fail), then reboot into TWRP, this time your password/lock code should work, then flash Magisk
Click to expand...
Click to collapse
Running the flash_all script just throws it into that shutdowns again and keeps going into it anytime I go back into fastboot mode.
also gives me this
Code:
C:\Users\zacha\Desktop\platform-tools>fastboot devices
my S/N fastboot
C:\Users\zacha\Desktop\platform-tools>flash_all
C:\Users\zacha\Desktop\platform-tools>set fastboot_cmd=fastboot
C:\Users\zacha\Desktop\platform-tools>fastboot flash partition:0 gpt_both0.bin
Sending 'partition:0' (44 KB) FAILED (Write to device failed (Invalid argument))
fastboot: error: Command failed.
or is just sits there likes this:
Code:
C:\Users\zacha\Desktop\platform-tools>adb reboot bootloader
C:\Users\zacha\Desktop\platform-tools>flash_all
C:\Users\zacha\Desktop\platform-tools>set fastboot_cmd=fastboot
C:\Users\zacha\Desktop\platform-tools>fastboot flash partition:0 gpt_both0.bin

In that case, fastboot flash each part individually under both partitions (where applicable) and you should be back to stock

blackknightavalon said:
In that case, fastboot flash each part individually under both partitions (where applicable) and you should be back to stock
Click to expand...
Click to collapse
Just does the exact same thing.

Cyclo_sarin said:
Just does the exact same thing.
Click to expand...
Click to collapse
I'm having the exact same issue. I'm unable to get any flash to work. Tried multiple different machines. Keep getting the same errors. Did you find a solution?
Code:
c:\adb>fastboot flash partition:0 gpt_both0.bin
Sending 'partition:0' (44 KB) FAILED (Write to device failed (Invalid argument))
Finished. Total time: 0.005s
Then my RP2 will go to the "Powered by Android" screen with the Razer logo and say "Press any key to shutdown"
I can use "fastboot devices" and get my devices serial number back along with rebooting the bootloader so I don't think it's a driver issue. Out of options and could use some help. At this point I can't even get the factory images to flash.
RP2 - ATT

xCROv said:
I'm having the exact same issue. I'm unable to get any flash to work. Tried multiple different machines. Keep getting the same errors. Did you find a solution?
Code:
c:\adb>fastboot flash partition:0 gpt_both0.bin
Sending 'partition:0' (44 KB) FAILED (Write to device failed (Invalid argument))
Finished. Total time: 0.005s
Then my RP2 will go to the "Powered by Android" screen with the Razer logo and say "Press any key to shutdown"
I can use "fastboot devices" and get my devices serial number back along with rebooting the bootloader so I don't think it's a driver issue. Out of options and could use some help. At this point I can't even get the factory images to flash.
RP2 - ATT
Click to expand...
Click to collapse
Incorrect cord?
https://developer.razer.com/razer-phone-dev-tools/factory-images/
Razer recommends you use a USB 3 Type-A to Type-C spec-compliant cable for any device flashing.
Click to expand...
Click to collapse
Or old ADB/Fastboot: https://developer.android.com/studio/releases/platform-tools.html

xCROv said:
I'm having the exact same issue. I'm unable to get any flash to work. Tried multiple different machines. Keep getting the same errors. Did you find a solution?
Code:
c:\adb>fastboot flash partition:0 gpt_both0.bin
Sending 'partition:0' (44 KB) FAILED (Write to device failed (Invalid argument))
Finished. Total time: 0.005s
Then my RP2 will go to the "Powered by Android" screen with the Razer logo and say "Press any key to shutdown"
I can use "fastboot devices" and get my devices serial number back along with rebooting the bootloader so I don't think it's a driver issue. Out of options and could use some help. At this point I can't even get the factory images to flash.
RP2 - ATT
Click to expand...
Click to collapse
BeardKing said:
Incorrect cord?
https://developer.razer.com/razer-phone-dev-tools/factory-images/
Or old ADB/Fastboot: https://developer.android.com/studio/releases/platform-tools.html
Click to expand...
Click to collapse
Have ya'll tried using this tool?? It works I'm telling you it'll solve any issues you have with ADB and or FASTBOOT period....
https://forum.xda-developers.com/android/general/tool-adb-fastboot-installer-tool-windows-t3999445

fastboot error!!

I'm using LGv40 (lmv405ebw). I installed the latest minimal adb and fastboot driver 1.4.3. The adb command works fine. But when I do `fastboot oem device-id` i'm getting into some error. Couldn't figure it out.
C:\Users\ranji>adb reboot bootloader
C:\Users\ranji>fastboot devices
LMV405EBWxxxxxxxxx fastboot
C:\Users\ranji>fastboot oem device-id
...
FAILED (command write failed (Unknown error))
finished. total time: 0.004s
What is this error? How to solve it?

va2ranjith said:
I'm using LGv40 (lmv405ebw). I installed the latest minimal adb and fastboot driver 1.4.3. The adb command works fine. But when I do `fastboot oem device-id` i'm getting into some error. Couldn't figure it out.
C:\Users\ranji>adb reboot bootloader
C:\Users\ranji>fastboot devices
LMV405EBWxxxxxxxxx fastboot
C:\Users\ranji>fastboot oem device-id
...
FAILED (command write failed (Unknown error))
finished. total time: 0.004s
What is this error? How to solve it?
Click to expand...
Click to collapse
Try with USB 2.0