Develop Bugs

Flashing to stock Android NPD90G from TWRP error: "remote: unsupported command"

Flashing to stock Android NPD90G from TWRP error: "remote: unsupported command"
Fixed flashing error "remote: unsupported command" when flashing a Pixel C back to stock
I used TWRP and SuperSU to root and modify the buildprops to enable and get an early look at the windowing in Android N beta on my Pixel C release 5 ahead of time.
When Release 5 NPD90G was available I decided to flash back to stock from Developer Preview 4 NPD56N rooted with SuperSU and flashed with TWRP. I like root - I run Ubuntu and Win 7. I don't mind running a rooted device if it doesn't have all my work and financial data. When the final N release is out, the Pixel C will become my work machine. It's almost there.
I'm naturally paranoid. I change my long passwords frequently and use 2 factor authentication for everything. So if I can, I'll take a stock release. See my instructions for wiping Android devices: How to wipe an Android Phone: the paranoid editon
I could not flash the NPD90G stock bootloader because of an error "remote: unsupported command"
Here's how I fixed it.
Updated the SDK manager including SDK Tools and USB drivers.
With the Pixel C in recovery mode, {hold the power key and volume down}
In TWRP mount System and reboot to recovery
>ADB Shell.
From ADB Shell I ran
>fwtool vbnv write dev_boot_fastboot_full_cap 1 to reenable Fast boot.
Then I changed from TWRP to Fastboot mode {power button plus hold the volume up button}
>fastboot erase userdata
>fastboot erase boot
>fastboot erase cache
>fastboot erase recovery
>fastboot erase system
See Note 1. Below
>fastboot flash bootloader bootloader-dragon-google_smaug.7900.27.0.img
>fastboot reboot-bootloader
>fastboot flash bootloader bootloader-dragon-google_smaug.7900.27.0.img
>fastboot reboot-bootloader
Note 1.
The first time through I flashed the following line items which resulted in the resting robot Andi. I don't think I needed to do this, but if the above instructions don't work, run the following before continuing for {flash bootloader bootloader-dragon-google_smaug.7900.27.0.img}
>flash bootloader bootloader-dragon-google_smaug.7900.27.0.img
>fastboot reboot-bootloader
>fastboot reboot-bootloader
>fastboot flash system system.img
>fastboot flash boot boot.img
>fastboot flash recovery recovery.img
>fastboot flash cache cache.img

Twrp can't flash
The problem is that I can't boot into the twrp because when i try to flash it the answer is failed unsupported remote command

Tugio said:
The problem is that I can't boot into the twrp because when i try to flash it the answer is failed unsupported remote command
Click to expand...
Click to collapse
When in fastboot mode, use:
Code:
fastboot boot twrp-local-file-on-computer.img

DanBUK said:
When in fastboot mode, use:
Click to expand...
Click to collapse
It's nice of you to help a fellow XDA user. But I suspect he's already solved his problem of three months ago.....

Hi guys
I have the same problem:
- the bootloader is unlocked (Coreboot menu says so)
- fastboot says "secure: yes" but "unlocked: yes" too
- "fastboot flashing get_unlock_ability" returns "1"
- "fastboot flashing unlock" says that the bootloader is already unlocked
But I have no recovery and if I try to fastboot boot recovery.img it fails with signature verification error
Can I do something to unbrick the device?
Regards

lllopa said:
Hi guys
I have the same problem:
- the bootloader is unlocked (Coreboot menu says so)
- fastboot says "secure: yes" but "unlocked: yes" too
- "fastboot flashing get_unlock_ability" returns "1"
- "fastboot flashing unlock" says that the bootloader is already unlocked
But I have no recovery and if I try to fastboot boot recovery.img it fails with signature verification error
Can I do something to unbrick the device?
Regards
Click to expand...
Click to collapse
My solution is very simple:
fastboot flashing lock
fastboot flashing unlock
fastboot reboot
And now let it boot.... and wait.
After the (failed) reboot check again: Now you can write all partitions... worked with my Pixel C

Make sure you have the latest version of fastboot and adb. I get these errors almost every month if I don't update.
https://developer.android.com/studio/releases/platform-tools.html

@stevep2007, thank you so much! I've been dealing with this "remote: unsupported command" nonsense for days now after trying to revert back to an older Oreo version of Lineage. This did the trick!

How can I solve the problem when my Pixel C is not unlocked? My Pixel made an update and after installing the Update I got the green little man. Now I have no Chance to activate USB debugging etc. Its also not possible to install twrp.img
How can I go to ADB shell with locked bootloader? Or isn't it possible?
Fastboot devices shows me my tablet. ADB devices also show my tablet with "sideload".
But every try to flash my Pixel fails. I alway get the message .... remote: unknown command.......fastboot error: command failed
flash-all.bat showes that all "*.img are missing" error: command failed... unknown command etc.......
So any idea to get my Pixel working again? ADB shell would make it I think. But how with locked bootloader.

_Arne_ said:
My solution is very simple:
fastboot flashing lock
fastboot flashing unlock
fastboot reboot
And now let it boot.... and wait.
After the (failed) reboot check again: Now you can write all partitions... worked with my Pixel C
Click to expand...
Click to collapse
This did it for me!! Thanks much. I also updated platform-tools at the same time, who knows which did it

_Arne_ said:
My solution is very simple:
fastboot flashing lock
fastboot flashing unlock
fastboot reboot
And now let it boot.... and wait.
After the (failed) reboot check again: Now you can write all partitions... worked with my Pixel C
Click to expand...
Click to collapse
In the scenario described by @llopa this solution does not work.
In that scenario there are no solutions

bernardomarx said:
In the scenario described by @llopa this solution does not work.
In that scenario there are no solutions
Click to expand...
Click to collapse
Sorry replied incorrectly

Pixel C - fastboot unsupported command

Hi everyone ! (I apologyze for my english)
I cant flash anything on my Pixel C because of this:
C:\Users\ykant\Desktop\Minimal ADB and Fastboot>fastboot flash recovery TWRP_dragon_3.0.2-23.img
target reported max download size of 268435456 bytes
erasing 'recovery'...
FAILED (remote: unsupported command)
finished. total time: -0.000s
Click to expand...
Click to collapse
No system to boot on and my TWRP is wiped !!
--> Cant do this:
fwtool vbnv write dev_boot_fastboot_full_cap 1
Click to expand...
Click to collapse
Is my pixel C bricked now ?
regards !

Did you unlock your device first with "fastboot oem unlock"?

redukt said:
Did you unlock your device first with "fastboot oem unlock"?
Click to expand...
Click to collapse
Yes i did this before, i was running on Remix OS

I don't know if this is of relevance but there were new fastboot commands introduced from Android M (?) and I have recollection about "partial unlock" - two flags required to be set and if only one was set it could be reported that the bootloader was unlocked but fastboot saw it as locked. Above may be totally wrong.
Here's the difference between old and current fastboot commands. Note the new lock/unlock commands
Code:
************************ OLD **************************************
commands:
update <filename> reflash device from update.zip
flashall flash boot, system, vendor and if found,
recovery
flash <partition> [ <filename> ] write a file to a flash partition
erase <partition> erase a flash partition
format[:[<fs type>][:[<size>]] <partition> format a flash partition.
Can override the fs type and/or
size the bootloader reports.
getvar <variable> display a bootloader variable
boot <kernel> [ <ramdisk> [ <second> ] ] download and boot kernel
flash:raw boot <kernel> [ <ramdisk> [ <second> ] ] 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
************************ NEW **************************************
C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot
usage: fastboot [ <option> ] <command>
commands:
update <filename> Reflash device from update.zip.
Sets the flashed slot as active.
flashall Flash boot, system, vendor, and --
if found -- recovery. If the device
supports slots, the slot that has
been flashed to is set as active.
Secondary images may be flashed to
an inactive slot.
flash <partition> [ <filename> ] Write a file to a flash partition.
flashing lock Locks the device. Prevents flashing.
flashing unlock Unlocks the device. Allows flashing
any partition except
bootloader-related partitions.
flashing lock_critical Prevents flashing bootloader-related
partitions.
flashing unlock_critical Enables flashing bootloader-related
partitions.
flashing get_unlock_ability Queries bootloader to see if the
device is unlocked.
flashing get_unlock_bootloader_nonce Queries the bootloader to get the
unlock nonce.
flashing unlock_bootloader <request> Issue unlock bootloader using request.
flashing lock_bootloader Locks the bootloader to prevent
bootloader version rollback.
erase <partition> Erase a flash partition.
format[:[<fs type>][:[<size>]] <partition>
Format a flash partition. Can
override the fs type and/or size
the bootloader reports.
getvar <variable> Display a bootloader variable.
set_active <slot> Sets the active slot. If slots are
not supported, this does nothing.
boot <kernel> [ <ramdisk> [ <second> ] ] Download and boot kernel.
flash:raw boot <kernel> [ <ramdisk> [ <second> ] ]
Create bootimage and flash it.
devices [-l] List all connected devices [with
device paths].
continue Continue with autoboot.
reboot [bootloader] Reboot device [into bootloader].
reboot-bootloader Reboot device into bootloader.
help Show this help message.

-Yazh- said:
Hi everyone ! (I apologyze for my english)
I cant flash anything on my Pixel C because of this:
C:\Users\ykant\Desktop\Minimal ADB and Fastboot>fastboot flash recovery TWRP_dragon_3.0.2-23.img
target reported max download size of 268435456 bytes
erasing 'recovery'...
FAILED (remote: unsupported command)
finished. total time: -0.000s
Click to expand...
Click to collapse
No system to boot on and my TWRP is wiped !!
--> Cant do this:
fwtool vbnv write dev_boot_fastboot_full_cap 1
Click to expand...
Click to collapse
Is my pixel C bricked now ?
regards !
Click to expand...
Click to collapse
Hi, I'm just wondering if you were able to fix your tablet. I ran into the same problem as you here and am not able to find a solution to it.

Hi !!
Sorry for bad news, but i didn't found any solution since my Pixel C was bricked. Maybe there is a solution, but I dropped it before finding it.
I hope you find something to fix it !

@viii_xvi Are you using "Minimal ADB and Fastboot" as shown in the post you quoted by -Yazh- ? The current (?) version that I can find is 1.4.3 and that looks to be "2015".
For the current versions of adb and fastboot and the revision history, 12 since October 2016, see https://developer.android.com/studio/releases/platform-tools.html

peterk-1 said:
Are you using "Minimal ADB and Fastboot" as shown in the post you quoted by -Yazh- ? The current (?) version that I can find is 1.4.3 and that looks to be "2015".
Click to expand...
Click to collapse
No. I used the 15 second ADB and Fastboot installer. I'm pretty sure it works fine as I can use fastboot commands.
peterk-1 said:
For the current versions of adb and fastboot and the revision history, 12 since October 2016, see https://developer.android.com/studio/releases/platform-tools.html
Click to expand...
Click to collapse
I don't really know what to do with the files found in the zip. If I'm doing it wrong, can you tell me what I should be doing?

viii_xvi said:
No. I used the 15 second ADB and Fastboot installer. I'm pretty sure it works fine as I can use fastboot commands.
I don't really know what to do with the files found in the zip. If I'm doing it wrong, can you tell me what I should be doing?
Click to expand...
Click to collapse
There are Youtube videos on installing Android Platform Tools and a web search for installing Android Platform Tools with your o/s will find many hits. You need to know you are installing just the platform tools - some of the guides assume you are installing or have installed the full Android Software Development Kit (SDK).
Assuming you are using Windows then the simplest method is to copy the contents of the zip file into the current location of your "15 second" files. This ensures that you can run the new version of fastboot with the folder path you have used previously. In file manager "find" fastboot.exe and that will give you the folder to unzip ALL of the platform tools files. You will know if you have done it correctly if you get requests to overwrite existing files when you unzip the files.

peterk-1 said:
There are Youtube videos on installing Android Platform Tools and a web search for installing Android Platform Tools with your o/s will find many hits. You need to know you are installing just the platform tools - some of the guides assume you are installing or have installed the full Android Software Development Kit (SDK).
Assuming you are using Windows then the simplest method is to copy the contents of the zip file into the current location of your "15 second" files. This ensures that you can run the new version of fastboot with the folder path you have used previously. In file manager "find" fastboot.exe and that will give you the folder to unzip ALL of the platform tools files. You will know if you have done it correctly if you get requests to overwrite existing files when you unzip the files.
Click to expand...
Click to collapse
I've followed the instructions so I'm confident I did it correctly. Despite this, nothing has improved. I still can't flash the stock ROM or a custom recovery in fastboot.
What I've noticed from updating the fastboot version are some new commands I found when I entered "fastboot -h"
Code:
fastboot -h
commands:
reboot [bootloader|emergency]
stage <infile>
get_staged <outfile>
options:
--skip-secondary
--skip-reboot
--disable-verity
--disable-verification
--unbuffered
--version
From what I've tried, all the commands in options returns
fastboot: usage: no command
Click to expand...
Click to collapse

viii_xvi said:
I've followed the instructions so I'm confident I did it correctly. Despite this, nothing has improved. I still can't flash the stock ROM or a custom recovery in fastboot.
What I've noticed from updating the fastboot version are some new commands I found when I entered "fastboot -h"
Code:
fastboot -h
commands:
reboot [bootloader|emergency]
stage <infile>
get_staged <outfile>
options:
--skip-secondary
--skip-reboot
--disable-verity
--disable-verification
--unbuffered
--version
From what I've tried, all the commands in options returns
Click to expand...
Click to collapse
Hi, Did you tried to flash with the oldest stock rom of the pixel C ? Because it uses older version of fastboot so maybe it will work. I has also the same problem as you but hopefully twrp still worked so i could flash another system image.

rhmanoa said:
Hi, Did you tried to flash with the oldest stock rom of the pixel C ? Because it uses older version of fastboot so maybe it will work. I has also the same problem as you but hopefully twrp still worked so i could flash another system image.
Click to expand...
Click to collapse
I have now tried to flash the earliest factory image and am disappointed to say the bootloader did not flash and so I wasn't able to complete the flashing.
I don't think the problem is the fastboot version. It may be the bootloader itself. I've read someone describe this problem as "Broken fastboot (bootloader) security." I think the problem is that, when unlocked, the bootloader would return the same messages as if it was locked. The security of the bootloader still thinks it's locked and not allow flashing of any images. Also that locking and reunlocking does not improve the situation. This would explain why, when bootloader is unlocked, I get "remote: unsupported command" and "remote: image verification failed", the same as when I try the same commands when the bootloader is locked.

viii_xvi said:
I have now tried to flash the earliest factory image and am disappointed to say the bootloader did not flash and so I wasn't able to complete the flashing.
I don't think the problem is the fastboot version. It may be the bootloader itself. I've read someone describe this problem as "Broken fastboot (bootloader) security." I think the problem is that, when unlocked, the bootloader would return the same messages as if it was locked. The security of the bootloader still thinks it's locked and not allow flashing of any images. Also that locking and reunlocking does not improve the situation. This would explain why, when bootloader is unlocked, I get "remote: unsupported command" and "remote: image verification failed", the same as when I try the same commands when the bootloader is locked.
Click to expand...
Click to collapse
Just bought today, same issue, have you solved it?

mansonstein said:
Just bought today, same issue, have you solved it?
Click to expand...
Click to collapse
No, I didn't manage to fix it.

did you found a solution yet？
I got a same problem,cant flash anything but ordinary using.
I got the problem caused by flashed twrp3.2.3,cant get into system,just always get into twrp.
cant flash any official firmware with "flash-all.bat",no matter which platform tool or firmware.but the twrp were installed before can flash anything.
finally,I flashed newest OTA firmware,then device can be booted. but got the unsupported command

richardwia said:
did you found a solution yet？
I got a same problem,cant flash anything but ordinary using.
I got the problem caused by flashed twrp3.2.3,cant get into system,just always get into twrp.
cant flash any official firmware with "flash-all.bat",no matter which platform tool or firmware.but the twrp were installed before can flash anything.
finally,I flashed newest OTA firmware,then device can be booted. but got the unsupported command
Click to expand...
Click to collapse
I'm assuming you have the latest version of TWRP installed. IIRC, there should be "Fix Fastboot" in advanced options. If indeed you have the same problem I had, pressing this should fix the problem. I don't know anything beyond this as I never got to find out what happens afterwards.

viii_xvi said:
I'm assuming you have the latest version of TWRP installed. IIRC, there should be "Fix Fastboot" in advanced options. If indeed you have the same problem I had, pressing this should fix the problem. I don't know anything beyond this as I never got to find out what happens afterwards.
Click to expand...
Click to collapse
really？where I can find the“fix fastboot in advanced options”？

richardwia said:
really？where I can find the“fix fastboot in advanced options”？
Click to expand...
Click to collapse
I believe I'm not qualified to help you as I disposed of my tablet months ago. All the advice I've given is off of memory and may not be accurate. That being said, I won't help you anymore in fear of giving inaccurate information that may lead to bricking of your tablet.

I have a pixel C, flashed with latest 3-rd pixel experience before, someday i tried to flash back to factory image, hit the same trouble like this topic, i came here several times before, no solution, today, i found another article about this , it's solved my trouble.
sorry i am new here, i couldn't share the outside article link.
would like to share what i did on my pixel c.
1. root your pixel c
2. adb shell //this command could be executed under recovery mode too.
3. su
4. fwtool vbnv write dev_boot_fastboot_full_cap 1
5. adb reboot fastboot
then you could flash anything you want.

I had this just now - I finally got fed up of my Pixel C being so laggy and also chrome opening up as blank pages (I switched to brace to fix this, but it's abit crashy).
Anyhow I found that after
adb reboot bootloader
that
fastboot flash recovery twrp.img
was failing for me in the "Writing" stage
I discovered that the fix was to use
adb flashing unlock
then it will ask you a question (power button to confirm and one of teh volume keys to cancel).
after this it spins with erasing for a while and then comes back to fastboot after which
fastboot flash recovery twrp.img
Worked, after this you get an annoying 30s delay for each restart, I think that can be fixed by
adb flashing lock
I'll verify this when I've finished flashing a usable ROM to my Pixel C...

[GUIDE] How to root your Asus Zenfone 6 without TWRP | Info about A/B

Hey guys and girls,
This is a bit of copy and paste for from my guide for the HTC U12+. I thought it might be helpful to people here too.
If you find mentions of the HTC U12+ please notify me and I will correct them.
I couldn´t find any guide on how to root the Asus Zenfone 6 without twrp yet, so I thought maybe it´s good to have one. It´s also useful for people who don´t like to boot/flash the recovery but want root access.
I also decided now to do a little write up about the A/B slot partition system.
General Information about the A/B slot partition system and seamless updates
Google firstly introduced seamless updates on the Pixel Phones and with it the A/B partition system.
So this means, contrary to non A/B devices, there are two copys of most partitions except userdata.
We have two system (system_a and system_b), two boot (boot_a and boot_b) and two vendor (vendor_a and vendor_b) partitions, amongst others (can be found further down in the partition list but let´s concentrate on these).
When booted in the OS, one slot is actively used and the other is "inactive".
The main advantage that emerges now is, that in case an OTA arrives the "inactive" partitions get updated, while the OS is running. That means while the actual OTA is happening you can use your phone just like you always do.
The following reboot will boot into the former "inactive" slot and use the seamless updated partitions. This happens seamless and just with a reboot. So OTAs are much faster!
If you are interested further here are some links:
https://www.xda-developers.com/list-android-devices-seamless-updates/
https://source.android.com/devices/tech/ota/ab/
https://source.android.com/devices/tech/ota/ab/ab_faqs
Here’s another writeup from the XDA portal!
https://www.xda-developers.com/how-...ess-updates-affect-custom-development-on-xda/
But here are a few tips and tricks:
How to reboot to bootloader to be able to use fastboot:
From booted OS with buttons: Press and hold power down until the screen goes black, then press and hold power and vol up to enter bootloader
non responding and the phone isn´t booting: press and hold power plus volume up to enter bootloader
From the OS or recovery via ADB (requires USB Debugging enabled in dev options):
Code:
adb reboot bootloader
How to get the active slot:
Code:
fastboot getvar current-slot
How to set the active slot:
A word of advice. If you don´t know what you´re doing you should probably not change slots. Because my U12+ only has a working A Slot. The B slot is without the first OTA or flashing a RUU unbootable.
Set active slot to a:
Code:
fastboot --set-active=a
Set active slot to b:
Code:
fastboot --set-active=b
How to extract the boot.img from a firmware.zip
1. Download the firmware zip from here : https://www.asus.com/Phone/ZenFone-6-ZS630KL/HelpDesk_Download/
2. Follow the steps described here: https://forum.xda-developers.com/nokia-7-plus/how-to/guide-how-to-extract-payload-bin-ota-t3830962
3. Obtain your boot.img
How to root your phone without TWRP
Prerequisites:
- unlocked bootloader
- USB-Debugging in developer options enabled
- latest adb and fastboot binaries (can always be found here
- working adb and fastboot environment
- magisk-patched boot.img
How to:
1. Download the latest magisk manager from here and install it on your phone: https://github.com/topjohnwu/MagiskManager/releases
2. Get a boot.img that fits your current firmware. Look at the point above, how to extract it from an Asus firmware zip.
Important: if you decide to use a pre-patched boot.img (available below), download it and place it in your fastboot folder, then skip to step 11!
3. Copy the extracted boot.img to your phone
4. Open the magisk manager app and tap two times on install
5. Now choose patch boot.img file and select the previously extracted boot.img you copied to your phone in the upcoming file chooser
6. Wait for the boot.img to be patched
7. Now connect your phone to your pc and make sure usb debugging is enabled in developer options
8. Open up a terminal in your fastboot folder and make sure adb is working by typing
Code:
adb devices
into terminal which should return your serial number
9. Pull the patches boot.img to your fastboot folder via:
Code:
adb pull /sdcard/Download/magisk_patched.img
10. Reboot to bootloader:
Code:
adb reboot bootloader
11. Flash the magisk patched boot.img:
Code:
fastboot flash boot magisk_patched.img
12. Congratulations you´re now rooted.
Pre-Magisk-Patched boot.imgs
Important: Make sure to download the correct version, that matches your firmware.
Downloads: https://www.androidfilehost.com/?w=files&flid=295609

Is it possible to do this and still get OTA updates from ASUS?

sidamos77 said:
Is it possible to do this and still get OTA updates from ASUS?
Click to expand...
Click to collapse
You need to unlock the bootloader for this which will prevent you from getting ota updates automatically from asus. But you can install updates manually.

Ok, great, thank you.

Remember, this will void your warranty (as per Asus' own definition). Sad, but true.
I would root it in an instant, but am hesitant due to warranty being void.

Any way to unofficially unlock the Bootloader?

vasra said:
Remember, this will void your warranty (as per Asus' own definition). Sad, but true.
I would root it in an instant, but am hesitant due to warranty being void.
Click to expand...
Click to collapse
In Europe unlocking the bootloader and rooting doesn't legally void warranty. It was ruled this way a few years ago.

Freak07 said:
[...]
Pre-Magisk-Patched boot.imgs
Important: Make sure to download the correct version, that matches your firmware.
Downloads: https://www.androidfilehost.com/?w=files&flid=295609
Click to expand...
Click to collapse
The folder WW_PHONE-16.1210.1904.75-0 which is the firmware my device has, is empty. Do you still have the prepatched boot.img of that version ? ASUS doesn't have that version for download anymore.
Thanks in advance.
If not: how can I update manually since I do not get any OTA Updates with a locked Bootloader ?

GRöder said:
how can I update manually since I do not get any OTA Updates with a locked Bootloader ?
Click to expand...
Click to collapse
https://swedroid.se/forum/threads/snabba-fragor-snabba-svar-zenfone-6.165775/page-26#post-2433773
https://swedroid.se/forum/threads/snabba-fragor-snabba-svar-zenfone-6.165775/page-37#post-2442236
Use Translator.

I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
Code:
fastboot flash boot magisk_patched.img
target reported max download size of 805306368 bytes
sending 'bootb' (47064 KB)...
OKAY [ 1.094s]
writing 'bootb'...
FAILED (remote: (bootb_b) No such partition)
finished. total time: 1.106s
the getvar command returns the following output:
Code:
fastboot getvar current-slot
current-slot: b
finished. total time: 0.009s
Do you have any advice for me ?
Edit:
After being curious and trying
Code:
fastboot flash boot_a magisk_patched.img
which worked, I tried to flash it at the active slot b explicitly:
Code:
fastboot flash boot_b magisk_patched.img
which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .

GRöder said:
I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
the getvar command returns the following output:
Do you have any advice for me ?
Edit:
After being curious and trying which worked, I tried to flash it at the active slot b explicitly: which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .
Click to expand...
Click to collapse
Did you download the latest adb and fastboot binaries from the link I provided in the OP?
Or did you use already existing ones or from a toolkit/easy installer etc. from somewhere on xda?
To me it sounds you were using outdated binaries.
Fastboot flash boot boot.img detects the active slot automatically if you’re on the latest binaries. Did it like this on the zenfone like on all other A/B devices I’ve owned so far and it works just fine.

Freak07 said:
Did you download the latest adb and fastboot binaries from the link I provided in the OP?
Or did you use already existing ones or from a toolkit/easy installer etc. from somewhere on xda?
To me it sounds you were using outdated binaries.
Fastboot flash boot boot.img detects the active slot automatically if you’re on the latest binaries. Did it like this on the zenfone like on all other A/B devices I’ve owned so far and it works just fine.
Click to expand...
Click to collapse
That might have been the the point. In fact, I did download them, but I used (definately outdated, because on my pc since literally years) a minimal adb and fastboot installation.
I didn't think about it, as this is my first A/B device.
I won't try it now with the latest ones, because it worked and I don't want to destroy something (since we still dont have a working TWRP for backup & recovery) but I guess you're right, and the problem were the outdated binaries.
Thank you.

GRöder said:
If not: how can I update manually since I do not get any OTA Updates with a locked Bootloader ?
Click to expand...
Click to collapse
Download the new Firmware from Asus and copy it to the root of sdcard. Unplug the usb cable or reboot or search for update in settings. It will find the update file and display a notification.

isthisadagger said:
Download the new Firmware from Asus and copy it to the root of sdcard. Unplug the usb cable or reboot or search for update in settings. It will find the update file and display a notification.
Click to expand...
Click to collapse
In fact, I tried that before I tried the stock-recovery-method (found it at the ASUS FAQ-pages), but it didn't work, even after a reboot, no notification showed up.

GRöder said:
I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
Code:
fastboot flash boot magisk_patched.img
target reported max download size of 805306368 bytes
sending 'bootb' (47064 KB)...
OKAY [ 1.094s]
writing 'bootb'...
FAILED (remote: (bootb_b) No such partition)
finished. total time: 1.106s
the getvar command returns the following output:
Code:
fastboot getvar current-slot
current-slot: b
finished. total time: 0.009s
Do you have any advice for me ?
Edit:
After being curious and trying
Code:
fastboot flash boot_a magisk_patched.img
which worked, I tried to flash it at the active slot b explicitly:
Code:
fastboot flash boot_b magisk_patched.img
which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .
Click to expand...
Click to collapse
sorry guy,
how you unlocked the bootloader ? for me official tool asus doens't work. error due to internet connection is the message.
please can you explain every step ? thanks

Ya how do we unlock the bootloader without asus knowing it

MirkoMirko9 said:
sorry guy,
how you unlocked the bootloader ? for me official tool asus doens't work. error due to internet connection is the message.
please can you explain every step ? thanks
Click to expand...
Click to collapse
nikhil18 said:
Ya how do we unlock the bootloader without asus knowing it
Click to expand...
Click to collapse
I used the official app, while the device was connected to the internet. So yes, ASUS knows that I unlocked the device.
The device was still at the -75 firmware, when I did it.
 @MirkoMirko9 If you can live with asus knowing that you unlocked the device, try it again with active internet connection.
As far as I know, there is no other method yet.

unable to unlock bootloader with the official unlock device tool, it is showing network error although my network is alright. Any workaround?

QuazIqbal said:
unable to unlock bootloader with the official unlock device tool, it is showing network error although my network is alright. Any workaround?
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=79817571&postcount=31

magisk_patched boot.img for .156 firmware is uploaded to the patched boot.imgs folder

restart loop with V10.3.5.0.ODEMIXM after factory reset

I have my MI MIX 2 with official global V10.3.5.0.ODEMIXM. I upgraded to this version via regular OTA update about 2 weeks ago.
After factory recovery I did last day I stuck in restart loop with error.
I picked up language, region, and after that on Just a sec screen I have error Find Device closed unexpectedly and going to restart loop.
Via Mi suite 3 beta I am able to flash same firmware, but this is causing same error and loop. Older firmwares are not possible to flash because of error. (flashing firmware older the nactual firmware on phone)
Via fastboot I am not able to flash anything as phone has locked bootloader and is not assigned to my Mi account so unlock tool is not able to unlock it.
So.. what can I do to fix it ?

hi , if you have access to fastboot look if arb is on , download this => https://androidfilehost.com/?fid=24686681827312411 and copy/paste that => fastboot getvar anti ,, if you get 4, arb is on ..... if you have under , you can flash older firmware
So if you have 4 , search '' Anti-rollback Protection and Fastboot Unlocker '' to download antirbpass dummy.img

So
fastboot getvar anti
anti: 1
fastboot flash antirbpass dummy.img
target reported max download size of 536870912 bytes
sending 'antirbpass' (8 KB)...
OKAY [ 0.002s]
writing 'antirbpass'...
FAILED (remote: Flashing is not allowed in Lock State)
finished. total time: 0.006s
Mi suite 3.0 still says:
Sorry, I can't support the rollback to a non-newer previous version.
Push Man Brush Pack Version: V10.3.5.0.ODEMIXM

hi you have anti 1 , you can flash older rom without brick , you have unlock bootloader
rom 10.2.2.0 =>http://bigota.d.miui.com/V10.2.2.0....XM_20190109.0000.00_8.0_global_ffb701bb41.tgz ,, you can flash ,, after that make upgrade firmware via update
ps: un flash.bat it will ask for 0 to flash ............. i did mistake ....... you can try flash beta rom , it's under pie , i flashed it to and it's stable
=> https://bigota.d.miui.com/9.5.30/ch...30_20190530.0000.00_9.0_global_6c535734e7.tgz
after flash search update normaly get 9.6.13

I really appreciate your help, but I was not succesfull.
Bootloader is locked and unlocking via MI Unlock is not succesfull because no Mi account is bound to the device.
Flashing via Mi Suite 3 always ends like this:
V9.5.8 (pie) -> Unable to flash between different android versions. Please flash ROM via Fastboot Flashing
V9.6.13 -> Unable to flash between different android versions. Please flash ROM via Fastboot Flashing
V10.2.2.0.ODEMIXM - > ROM Package verification failed Unknown Error[2013]
V10.3.1.0.ODEMIXM -> Sorry, I can't support the rollback to a non-newer previous version.
V10.3.5.0.ODEMIXM -> Succesfull, but always get boot loop with error FIND DEVICE CLOSED UNEXPECTEDLY
I also tried to reboot to EDL with help of this srticle: https://www.xiaomigeek.com/edl-mode-xiaomi.html second option - 2. How to Boot into EDL From Fastboot Mode.
But it always restarts and goes to boot loop.
So is last try open the phone and test point method? http://en.miui.com/thread-1351514-1-1.html

Redmi note 8 pro, bricked for ever?

Hello guys:
One month ago i bought a Redmi note 8 pro, when it comes after a long time (almost 3 weeks) it comes with bootloader opened so i couldn use for example NFC pay. I looked for information to lock the bootloader i followed steps and bootloader was closed but phone was bricked too, so only can put smarthphone in fastboot or in recovery mode. I tried flash some roms by Fastboot using CMD in pc but appears this message
C:\adb>fastboot flash system system.img
target reported max download size of 134217728 bytes
erasing 'system'...
FAILED (remote: not allowed in locked state)
finished. total time: 0.004s
that was expected because bootloader is closed, but now i dont know if its posible to unlock bootloader and flash a new rom or beeing bootloader closed, flash a new rom for unbrick the phone.
To solve this problem I heard something abou autoriced xiaomi accounts and something about waiting seven days for unlock but i dont know nothing about it.
Thank you guys.

Have you tried the stock firmware and flash tool?
Sent from my SM-A705FN using Tapatalk

Sythel4 said:
Have you tried the stock firmware and flash tool?
Sent from my SM-A705FN using Tapatalk
Click to expand...
Click to collapse
I have tried to flash with fastboot and with miflash pro, and it always fails, I imagine that the flash tool will do the same as miflash pro and it will also fail, I will try anyway.
Thank you.

Try and give me a feedback
Sent from my SM-A705FN using Tapatalk

Sythel4 said:
Try and give me a feedback
Sent from my SM-A705FN using Tapatalk
Click to expand...
Click to collapse
I'm sorry for answering late, but I'm very busy with the current health situation.
What I have done is focus on unlocking the bootloader, and later will flash a new rom.
To unlock the device i have download "mi flash unlock tool"
Software recognice my phone
Click on "unlock">"unlock anyway">"unlock anyway"
Verifying device-ok
Unlocking-Fail
Couldn´t unlock
Please add your account in MIUI´s Settings > Developers option > Mi Unlock status
This way doesnt work.
I try by fastboot and cmd commands
Fastboot devices
Ok is connected and recognized
fastboot oem device-info
...
time 0.002s
Failed (remote: Unknown command)
fastboot oem unlock
...
time 18.455s
FAILED (Remote: GetVar Variable Not Found)
(Smartphone disconect and rebboy on recovery mode)
And well...I dont know what to do now.

It won't unlock because your device is already unlocked. You need to flash stock rom from custom recovery. Install custom recovery via adb. when you go back to stock rom device will be oem locked again. Also original account that was used to oem unlock device may be required that is why it might be failing.
https://forum.xda-developers.com/re...de-unlock-bootloader-flash-twrp-root-t3995919 (useful software here)
After flashing stock rom In fastboot try
Linux: adb fastboot-linux oem lock
OSX: adb fastboot-mac oem lock
Windows: adb fastboot-windows.exe oem lock