Database Develop

[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

Problem with on-boot password led to partial brick, need help [r13]

Hey guys,
I dun goofed when trying to do a routine backup.
First off, I'm trying to recover this without wiping, as I have some 2FA apps and other things that have secret keys that can't be recovered unless I can decrypt the darned thing
Rebooted into TWRP in order to do an image backup before I upgrade from arter97's kernel r13 to r14.
When TWRP comes up, it surprises me with a password prompt (instead of pattern unlock which is what it should be)
Reboot to system to remove encryption and then fix the password issue, greeted by "To start Android, enter your password" prompt, again instead of pattern unlock
Tried the numbers-to-pattern trick, no luck. Basically locked out of the phone now
Booted back into TWRP, while looking around for other options, accidentally chose "Slot A" which has gotten me stuck back on the old recovery
fastboot commands no longer work properly (see below)
Sometimes the commands hang, and I need to ctrl+c and re-run. I get very inconsistent results, as you'll see below
Code:
D:\adb>fastboot.exe boot twrp-3.2.1-0-cheryl.img
Sending 'boot.img' (23120 KB) FAILED (Write to device failed (Too many links))
fastboot: error: Command failed
Trying to re-flash the kernel just hangs:
Code:
D:\adb>fastboot.exe flash boot arter97-kernel-r14-20200428.img
Tried switching to Windows Terminal/Powershell and got slightly different error:
Code:
PS D:\adb> .\fastboot.exe boot .\twrp-3.2.1-0-cheryl.img
Sending 'boot.img' (23120 KB) FAILED (Write to device failed (Unknown error))
fastboot: error: Command failed
PS D:\adb> .\fastboot.exe flash boot .\arter97-kernel-r14-20200428.img
Sending 'boot' (30176 KB) FAILED (Write to device failed (Unknown error))
fastboot: error: Command failed
PS D:\adb> .\fastboot.exe getvar all
getvar:all FAILED (Write to device failed (Unknown error))
Finished. Total time: 5.004s
PS D:\adb> .\fastboot.exe --set-active=a
PS D:\adb> .\fastboot.exe --set-active=b
fastboot: error: Device does not support slots
PS D:\adb> .\fastboot.exe --set-active=q
Slot q does not exist. supported slots are:
a
b
PS D:\adb> .\fastboot.exe --set-active=a
Setting current slot to 'a' FAILED (remote: 'Invalid Slot')
fastboot: error: Command failed
PS D:\adb> .\fastboot.exe --set-active=b
Setting current slot to 'b' FAILED (remote: 'unknown command')
fastboot: error: Command failed
I'm sure the TWRP image is still there in slot b, but I can't get it to switch back.

Update:
I tried running the `fastboot --set-active=b` on a different (older) system which did finally work and allowed me to switch back over to TWRP, but I'm still having that decryption issue.
Anyone know why the encryption would suddenly switch from pattern unlock to "password" and how I could fix it?
Edit: After doing some more research on here, it sounds like my phone may have OTA'd itself to MR3 which may be the cause for the password issue.
Got an idea that I hope will work, which is to use the factory MR2 image, and comment out the lines for wiping data. Maybe that will bring it back?

System integrity is compromised error after restoring using Moto smart assistant.

I've had my Moto G6 rooted for some time now. An ota update for PPS29.118-15-11-16 was continually nagging so I uninstalled Magisk and installed it.
Upon reboot when checking for updates I now get the following:
As your device system integrity is compromised, it is no longer eligible for software updates. Please contact customer service to re-program the device with official software.
I tried restoring to factory using Lenovo Moto smart assistant and that worked as it should. I still get the same "System integrity is compromised" error. I was under the impression that this would be reset upon doing this factory reset.
How would I get this message to be removed as I don't ever remember seeing it when this phone was rooted all this time.
Thanks

If I downgrade back to my last version PPSS29.118-15-11-9 the "System integrity is compromised" is NOT present.

Installing magisk seems to allow the ota updater to NOT report the "System integrity is compromised". As for stock, no dice.

minipretzel said:
Installing magisk seems to allow the ota updater to NOT report the "System integrity is compromised". As for stock, no dice.
Click to expand...
Click to collapse
without Magisk = system recognizes your unlocked bootloader
with Magisk = unlocked bootloader is hidden and OTAs and OEM-Unlock toggle are enabled, even SafetyNet check will pass.

I know this thread is old but I have the exact same problem.
I also restored stock roms from PPS29.118-15-11-16 using Smart assistant. I was already at this version, but I did the update anyway, as I have read that the smart assistant rescue would completely restore the phone to stock condition. But this didn't clear my "System Integrity..." message.
Just fyi, I actually ran the smart assistant commands manually... The SA failed to update my phone so I reconstructed the commands from the xml file and executed them one by one to find and fix this problem.
I re-ran the standard rescue after this and it was fine.
I noticed that my oem lock/unlock switch is enabled in my system->developer settings ( this was greyed out before).
Thing is, I do have magisk installed , as I wanted to root the phone. But this doesn't clear the message as it did for the OP.
I saw another article (thread) that recommended issuing "fastboot oem lock" twice, followed by some (re)flashing of the oem, system, and boot img files, and one final lock command. See "Using Lenovo Moto Smart Assistant to restore stock rom (and lock bootloader after)" by alexmaisa.
But the article by alexmaisa is from 2019 and is for a G5S....
Any ideas would be greatly appreciated.

pdpantages said:
I noticed that my oem lock/unlock switch is enabled in my system->developer settings ( this was greyed out before).
Click to expand...
Click to collapse
With magisk installed it's quiet normal.
pdpantages said:
I saw another article (thread) that recommended issuing "fastboot oem lock" twice, followed by some (re)flashing of the oem, system, and boot img files, and one final lock command. See "Using Lenovo Moto Smart Assistant to restore stock rom (and lock bootloader after)" by alexmaisa.
Click to expand...
Click to collapse
That's the correct way to relock your bootloader. Just follow the output lines in your cmd after executing fastboot oem lock.

WoKoschekk said:
That's the correct way to relock your bootloader. Just follow the output lines in your cmd after executing fastboot oem lock.
Click to expand...
Click to collapse
Thank you for the input. My bootloader was locked so the lock commands just reported this. When I ran the subsequent commands I got an error about unable to flash (bc the bootloader was locked)..... I thought maybe the original post had a typo so I switched to two "unlock" commands as the first commands. This unlocked me, and all the subsequent commands completed OK, including the final lock. But after setup I still have the System Integrity msg when I check for s/w updates under System menu.
The original post was from 2020 so possibly my version of Magisk (24.3) is the cause.?
I have most of what I want; latest stock ROMs and phone is rooted... just want to clear the problem with s/w updates.
I found another command set that that flashed the boot, system and oem twice.. I have cut these commands below. Unfortunately I don't recall where I got the bat file. It was called FLASH_OEM_LOCK.bat. Again these commands issue a lock command followed by some flash cmds which I thought would not work with the bootloader locked? Does a lock command not take effect until after reboot or something? Anyway, here they are:
fastboot oem lock
fastboot oem lock
fastboot flash oem oem.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash vendor vendor.img_sparsechunk.0
fastboot flash vendor vendor.img_sparsechunk.1
fastboot flash boot boot.img
fastboot oem lock
fastboot getvar max-sparse-size
fastboot oem fb_mode_set
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash modem NON-HLOS.bin
fastboot flash fsg fsg.mbn
fastboot flash dsp adspso.bin
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash vendor vendor.img_sparsechunk.0
fastboot flash vendor vendor.img_sparsechunk.1
fastboot flash oem oem.img
fastboot erase modemst1
fastboot erase modemst2
fastboot erase cache
fastboot erase userdata
fastboot erase DDR
fastboot flash fsg fsg.mbn
fastboot oem fb_mode_clear

@pdpantages That's the way to relock the bootloader and get the status "oem_locked":
1. Flash the current complete firmware
2. !!! THIS STEP IS HIGHLY RECOMMENDED !!!
If your bootloader will be relocked successfully after these steps, you won't have any options to fix errors! So, this is your last chance...
Important functions to check: are you able to boot into system, mobile (data) connections, Wifi
boot into system and check everything's working fine.
3. Are you really sure everything`s fine?
4. *** The following shows fastboot commands + output for a better understanding of what we are doing here. I took them from the last relock of my Moto G6 ***
Reboot into bootloader and run these commands:
Code:
########################################################################
# new lines beginning with "#" are comments and should not be executed!!
########################################################################
$ fastboot oem lock
...
(bootloader) WARNING: This command erases all user data.
(bootloader) Please re-run this command to continue.
OKAY [ 0.001s]
finished. total time: 0.001s
$ fastboot oem lock
...
(bootloader) Flash valid Android images now
(bootloader) Then re-run this command to lock
OKAY [ 0.002s]
finished. total time: 0.002s
# no need to flash the whole firmware (= valid Android images) again since we already did it in step 1.. Skip it and run lock command again.
$ fastboot oem lock
...
(bootloader) Still require signed boot.img
OKAY [ 0.001s]
finished. total time: 0.001s
# ATTENTION: Cannot be skipped as we did before! Bootloader needs signed boot.img a second time!
$ fastboot flash boot boot.img
target reported max download size of 534773760 bytes
sending 'boot' (22528 KB)...
OKAY [ 0.919s]
writing 'boot'...
OKAY [ 0.518s]
finished. total time: 1.438s
$ fastboot oem lock
...
(bootloader) Still require signed system.img and/or oem.img
OKAY [ 0.001s]
finished. total time: 0.001s
# ATTENTION: Cannot be skipped as we did before! Bootloader needs signed system/oem.img AND vendor.img (it's also signed since it contains sensitive firmware data, too) a second time!
$ fastboot flash system system.img_sparsechunk*
target reported max download size of 534773760 bytes
sending 'system' (262140 KB)...
OKAY [ 9.463s]
writing 'system'...
OKAY [ 5.836s]
finished. total time: 15.300s
(...flashing all other sparse images of system...)
$ fastboot flash vendor vendor.img_sparsechunk*
target reported max download size of 534773760 bytes
sending 'vendor' (254668 KB)...
OKAY [ 8.950s]
writing 'vendor'...
OKAY [ 5.484s]
finished. total time: 14.434s
( ...flashing all other sparse images of vendor...)
$ fastboot flash oem oem.img
target reported max download size of 534773760 bytes
sending 'oem' (153181 KB)...
OKAY [ 5.566s]
writing 'oem'...
OKAY [ 4.727s]
finished. total time: 10.294s
# now bootloader is satisfied and can be locked (yeah!!)
$ fastboot oem lock
...
(bootloader) Lock complete! Flash signed images after reboot if needed
OKAY [ 0.163s]
finished. total time: 0.163s

Thank you kindly for the into. The notes in particular clarified things for me quite a bit, and I understand that issuing the unlock commands as I did was incorrect. I will try it shortly and report the success or failure of my attempt.
My bl is currently locked- my intent is to unlock it (2 commands) , let the phone reset and boot, verify with "fastboot flashing get_unlock_ability" that it is in fact unlocked, and start your procedure from there...
Thank you again for the help. I expect your post will be helpful to others too.

pdpantages said:
I will try it shortly and report the success or failure of my attempt.
Click to expand...
Click to collapse
So I did as promised. The basic answer is that it worked as described. A few notes follow; things I wonder about and error msgs I saw.
Procedure: Not exactly as outlined above; my boot loader was locked so I issued some unlock commands:
rigel:/home/pdp/adb>fastboot oem unlock
(bootloader) invalid boot state
OKAY [ 0.006s]
Finished. Total time: 0.006s
rigel:/home/pdp/adb>fastboot oem unlock
(bootloader) invalid boot state
OKAY [ 0.001s]
Finished. Total time: 0.001s
rigel:/home/pdp/adb>fastboot flashing unlock
(bootloader) WARNING: This command erases all user data.
(bootloader) Please re-run this command to continue.
OKAY [ 0.001s]
Finished. Total time: 0.001s
So, I got errors trying oem unlock but "flashing unlock" worked and the phone booted when I entered the second one. Not sure if this is an issue or not.
Errors: I got a "not found" error with each img I flashed. I was a bit nervous about this as it looked like partition names were "not found". But despite this, the commands appeared to work so I carried on.
rigel:/home/pdp/adb> fastboot flash boot boot.img
(bootloader) is-logical:boot: not found
Sending 'boot' (22528 KB) OKAY [ 0.901s]
Writing 'boot' OKAY [ 0.381s]
Finished. Total time: 1.675s
In the end, everything worked as expected- the "System Integrity..." message was gone from the Software update setting, and the also the boot-time warming about unlocked bootloader was gone (I have seen many posts claiming it is not possible to clear this message).
Magisk: After all that, I still wanted to root my phone... I thought i would be able to install Magisk using twrp.
I tried booting into twrp recovery using adb (not flashing recovery.img ) but this didn't work. So in the end I unlocked my bootloader again. (required the unlock key) to install Magisk.
WoKoschekk said:
with Magisk = unlocked bootloader is hidden and OTAs and OEM-Unlock toggle are enabled, even SafetyNet check will pass.
Click to expand...
Click to collapse
I was hoping the above would apply to me but it didn't; I now see the "System Integrity message" again in my software update settings. It is manageable- if I really want a software update I now know how to revert the phone to stock. Now that I am rooted I can make backups with Titanium Backup which was my primary motive for rooting in the first place .
Thank you again for the help, WoKoschekk , it is much appreciated.

pdpantages said:
Not sure if this is an issue or not.
Click to expand...
Click to collapse
It seems to be an issue because oem unlock does work for me. But as long as your bootloader is unlocked it does not matter.
pdpantages said:
and the also the boot-time warming about unlocked bootloader was gone (I have seen many posts claiming it is not possible to clear this message)
Click to expand...
Click to collapse
It happens on Moto G6+ devices but not on our device.
pdpantages said:
Errors: I got a "not found" error with each img I flashed. I was a bit nervous about this as it looked like partition names were "not found".
Click to expand...
Click to collapse
This is related to the new fastboot versions that are used to flash devices with a partition /super. It contains /system, /vendor and some others and they are called "logical partitions". Moto G6 does not use a /super partition and you can ignore that check by fastboot.

WoKoschekk said:
This is related to the new fastboot versions that are used to flash devices with a partition /super. It contains /system, /vendor and some others and they are called "logical partitions". Moto G6 does not use a /super partition and you can ignore that check by fastboot.
Click to expand...
Click to collapse
OK thank you again. I see now that I get this error when I flash from Linux, but not Windows 10....
In case it might help someone here are my linux versions:
rigel:/home/pdp/adb>fastboot --version
fastboot version 31.0.2-android-tools
Installed as /usr/bin/fastboot
rigel:/home/pdp/adb>adb --version
Android Debug Bridge version 1.0.41
Version 31.0.2-android-tools
Installed as /usr/bin/adb[/FONT]

pdpantages said:
OK thank you again. I see now that I get this error when I flash from Linux, but not Windows 10....
In case it might help someone here are my linux versions:
rigel:/home/pdp/adb>fastboot --version
fastboot version 31.0.2-android-tools
Installed as /usr/bin/fastboot
rigel:/home/pdp/adb>adb --version
Android Debug Bridge version 1.0.41
Version 31.0.2-android-tools
Installed as /usr/bin/adb[/FONT]
Click to expand...
Click to collapse
What version is installed on your Windows system? If you don't get any "error" like that you are not using the latest version of fastboot. SDK Platform Tools

WoKoschekk said:
What version is installed on your Windows system? If you don't get any "error" like that you are not using the latest version of fastboot. SDK Platform Tools
Click to expand...
Click to collapse
Adb version 1.0.39
fastboot version 0.0.1-4500957
I don't like to use windows but I ran Motorola Rescue & Smart Assistant tool there... If I have to use windows again I will update it.

Question 'fastboot oem unlock' failing with remote: 'unknown command'

I just got my OnePlus 10 Pro, and am trying to unlock the bootloader. I've enabled USB debugging, and enabled the option to allow the bootloader to be unlocked in the Developer Settings.
I ran `adb reboot bootloader`, then ran `fastboot devices` to confirm the phone was connected and visible.
When I try to run `fastboot oem unlock`, I get this response:
Code:
FAILED (remote: 'unknown command')
fastboot: error: Command failed
Fastboot version if necessary:
Code:
C:\Windows\system32>fastboot --version
fastboot version 33.0.2-8557947
Installed as C:\Program Files\Android Platform Tools\fastboot.exe
Thanks!

Fastboot flashing unlock

Awesome, thank you very much!