Develop Bugs

[Q] adb/fastboot can't find device in bootloader, but they can do it when booted

Dear all,
I have worked on building Android from source code for few weeks. It used to be fine to me with my galaxy nexus, I can connect to my device via adb and fastboot and flash either the factory ROM or ROM built by me into my device. However, when updating the phone into 4.3, I forgot to extract drivers into the built directory and flash the built image into my device. Is surely can't work, and the screen turn off once "Google" is shown, so I would like to reflash it back to other image. However, my laptop can't recognize my Nexus S anymore in the bootloader. I can use "adb shell" once the device is normally booted (even without screen), but once I type "adb reboot bootloader", the connection is lost! Both "adb and fastboot devices" show nothing....
I have searched the forum and stackoverflow all day but can't find helpful information. There are many threads talking about unable to connect devices but 70% of them are driver-related issue and 30% of them, ex: sudo adb, just don't work for me. I think I am not facing the driver issue because I still can use "adb shell" once the device is normally booted (not in bootloader mode). Moreover, I also tried few debrick tools contributed by xda community but with no luck.
I am wondering if there is any way that I can reflash image to my device without accessing it in bootloader mode? (ex: push image in to device via adb shell when device is normally booted?). I am also wondering if there is any way to fix this problem. Any suggestion is very appreciated!: crying:
Thanks
Yu-Chih
ps. the most closed thread I found is called "ADB can discover devices but not fastboot" in stackexchange (I am not allowed to post the link)
but it seems there is no answer in this thread

I'm not a expert, but do you know how is the DD command ?,
I wonder, is you can DD the boot loader into the nexus partition?

chongns said:
I'm not a expert, but do you know how is the DD command ?,
I wonder, is you can DD the boot loader into the nexus partition?
Click to expand...
Click to collapse
Thanks for the reply. I am not sure what I should do with dd command? Could I use it to reinstall the drivers into device?
by the way, I found there is a error showing up in the bottom of screen in fastboot mode, "Fastboot Command Read Error -2147483647", and many closed threads (sorry that I am not allowed to post url because I am new). Some suggests are to reinstall drivers (even thought I don't get if they mean reinstall the usb driver for laptop or for android), but it seems not solved yet.
Yu-Chih

Dear all, I think I have tried all potential solution about "fastboot command read error -2147483647" that I can find at internet......
Here is what solution I have tried:
1. sudo the command of adb and fastboot
2. update drivers
3. update sdk
4. use another cable
5. install other drivers (win7), ex: naked driver
6. Wug's root kit
What I can't try:
1. enable USB debug mode at phone (because I don't have screen of it but only adb shell)
2. remove(uninstall) other software such as PDA net...etc (I don't try this because my system is clean-installed win7/MAC/ubuntu)
I think this problem is kind of common but my situation seems slightly different from others, that I can find the device when my device is normally booted but I can't recognize it when it is rebooted into bootloader (showing "fastboot command read error -2147483647" at bottom). I am starting to believe it either be the problem that I don't activate the USB debugging in my new flashed image (but I can connect it with adb when the device is normalled booted) or the usb driver in my device is broken.
Anyone has any idea.....:crying:
eddyxdxda said:
Thanks for the reply. I am not sure what I should do with dd command? Could I use it to reinstall the drivers into device?
by the way, I found there is a error showing up in the bottom of screen in fastboot mode, "Fastboot Command Read Error -2147483647", and many closed threads (sorry that I am not allowed to post url because I am new). Some suggests are to reinstall drivers (even thought I don't get if they mean reinstall the usb driver for laptop or for android), but it seems not solved yet.
Yu-Chih
Click to expand...
Click to collapse

Dear all,
This is my latest update. I wipe out the whole system of Ubuntu and Win7 and restart everything from the first step. Magically, the new Win7 + Wug's root kit can successfully flash new image into my phone. But also magically, the ubuntu system faces the same issue as I described (no connection in bootloader with the error code but connection is fine after the device is booted). The bright side of this is that I am finally able to try other solutions, e.g., enabling debugging mode, but the sad part is that I still get no luck at Ubuntu and MAC.........can't believe it works at Win7 but not at Ubuntu and MAC.....
Yu-Chih
eddyxdxda said:
Dear all, I think I have tried all potential solution about "fastboot command read error -2147483647" that I can find at internet......
Here is what solution I have tried:
1. sudo the command of adb and fastboot
2. update drivers
3. update sdk
4. use another cable
5. install other drivers (win7), ex: naked driver
6. Wug's root kit
What I can't try:
1. enable USB debug mode at phone (because I don't have screen of it but only adb shell)
2. remove(uninstall) other software such as PDA net...etc (I don't try this because my system is clean-installed win7/MAC/ubuntu)
I think this problem is kind of common but my situation seems slightly different from others, that I can find the device when my device is normally booted but I can't recognize it when it is rebooted into bootloader (showing "fastboot command read error -2147483647" at bottom). I am starting to believe it either be the problem that I don't activate the USB debugging in my new flashed image (but I can connect it with adb when the device is normalled booted) or the usb driver in my device is broken.
Anyone has any idea.....:crying:
Click to expand...
Click to collapse

USB drivers problem

I have a oneplus 3. Basically I'm trying to root my device... But when I go in to the command prompt to attempt to unlock bootloader, and type in fastboot devices it doesn't show anything... Ive installed the drivers too.

AllenPlaysGames said:
I have a oneplus 3. Basically I'm trying to root my device... But when I go in to the command prompt to attempt to unlock bootloader, and type in fastboot devices it doesn't show anything... Ive installed the drivers too.
Click to expand...
Click to collapse
Uninstall and reinstall the drivers, if necessary use the all in one tool kit to install the drivers. Also check you've allowed unlocking in advanced settings.

Fastboot interface is missing. Help!

On Device Manager (Window 10). Were updating the driver, I can only see ADB interface but no Fastboot interface. I'm on the latest version SDK from Google and have OnePlus driver installed. I can command ADB but not fastboot. What am I missing? My device is OnePlus 7T TMobile is sim unlocked and I can toggle OEM unlocking and is on.

Not sure what mean, but fastboot only works when you're booted in bootloader. (Adb reboot bootloader)
Sent from my OnePlus7TPro using XDA Labs

That's correct but when I fastboot cmd it get stuck on "waiting for device". So I read around on XDA on how to fix it and I tried to follow the instruction on PC - device manager, still no go.

PesTicide. said:
That's correct but when I fastboot cmd it get stuck on "waiting for device". So I read around on XDA on how to fix it and I tried to follow the instruction on PC - device manager, still no go.
Click to expand...
Click to collapse
I myself have never had this problem, I can only suggestion reinstalling OnePlus drivers.
Hopefully you figure this out
Sent from my OnePlus7TPro using XDA Labs

I reinstalled couple of times. Still no go! This is the first time that this happening. Never had problem since day one on Nexus devices. I'm going to try again and search more around.

You can also use the universal drivers by clockworkmod https://adb.clockworkmod.com/
Here's what I did.
1) Extract the android sdk platform tools and put on your c:// drive
2) Install the universal usb drivers
3) Enable usb debugging on your one plus and connect to computer. Switch to usb debugging mode and accept the popup on your one plus to allow the connection.
4) Open cmd and run "cd C:\platform-tools", then run "adb devices" to ensure that your devices is connected properly
5) Run "reboot bootloader" and device will restart into bootloader mode and fastboot will now work
*This is all assuming that you've already oem unlocked your devices as well already*

It work till fastboot. Still stuck at "waiting for device".

PesTicide. said:
It work till fastboot. Still stuck at "waiting for device".
Click to expand...
Click to collapse
Are you trying to open? Command shell? In windows 10 right? So for your information in windows 10 it's not supported , you have to open that platform tool folder which you installed already named as adb, platform tools , sdk may go into that folder and you will see a folders directory above there .. just click on that and type cmd and hit enter and cmd will pop up now you can use all your commands it's not your fault it's windows 10 fault ..maybe hope it may work for you

That how I done it. Fastboot Command appear on my Google Pixel 2 and 3 but I can't do it on my 7T. I don't get it
Thanks for the help! I tried working on Device Manager on PC yet doesn't work. Adb shell command work but no Fastboot command.

I found the solution! This is what I did and it worked for me! Here's the link for anyone who has the same issue I went through. Here you go and follow the instruction. http://www.wtfandroid.com/fix-fastboot-device-not-recognised-problem/
Mod you can close this thread. Thanks again for everyone who tried to help me. :highfive:

[GUIDE]UNBRICK NOTE 8 PRO - NO Authorised Service Account - YES Fastboot

Hello everyone.
Yesterday I bricked my Xiaomi Redmi Note 8 Pro, and today I managed to unbrick it without requiring anything special (no need for a Authorized Service Account).
I use Linux, so the scripts inside the Stock ROM end with the .sh file extension. If you're using Windows, use the .bat files.
Phone:
Xiaomi Redmi Note 8 Pro 128GB - Begonia (with NFC).
Bricked state:
Constant boot loop;
No access to bootloader;
No access to system;
Access to fastboot.
Phone requirement:
You must be able to load fastboot mode.
PC requirements:
1. You'll need adb tools (SDK Platform-Tools) to communicate with your phone. Official link is below;
2. Download and unpack the Stock ROM linked below.
Instructions:
1. You need to make sure your phone has some power in it;
2. Unpack the Stock Rom and enter its folder (begonia_global_images_V10.4.2.0.PGGMIXM_20191024.0000.00_9.0_global);
3. Put your phone into fastboot mode (Key Combo: Hold the Power button + Volume Down button until the fastboot logo appears);
4. Connect your phone to your PC;
5. Run the flash_all.* scripts according to your operating system:
5.1. Linux: "./flash_all.sh";
5.2. Windows (untested; I'm not using Windows): Run "flash_all.bat" (How to Run a BAT File on Windows);
6. Wait something between 5min to 10min. It's quite fast, and the flashing process is verbose enough.
7. Profit.
F.A.Q.:
1. How did you find this?
Well, none of the unbrick methods in the forum were working, except for the Authorised Service Account one which I didn' t test. I desperately wanted to unbrick my phone by myself, and I thought that it couldn't get worse (it could with a completely blank screen, but I got away with it).
2. Where did you get the Stock ROM from?
I can't remember. It likely was from a xda forum post but I'm unsure. If I can find the original post containing the Stock ROM I used I'll write it here.
3. Which Miui and Android version did you have prior to the brick?
MIUI Global 11.x + Android 9.
4. Which Miui and Android version does the Stock ROM you installed have?
MIUI Global 10.4.2 + Android 9.
5. Can I install any Stock ROM?
As long as it's compatible with your phone version, yes. I recommend not installing a Android 10 Stock ROM because of this: https://forum.xda-developers.com/showpost.php?p=82743011&postcount=3
6. What if can't enter fastboot mode (phone screen in dead blank)?
You won't be able to unbrick your phone using this method. It is worth trying to enter fastboot mode even though your phone has a dead screen, because fastboot might be working anyway (you'll have to test this yourself, as in trying to load fastboot with a blank screen). Read the next question.
7. How can I test if fastboot mode is working?
"adb devices" returns nothing;
"fastboot devices" returns your device (proof it works). Since "fastboot devices" finds your device, you can run the appropriate scripts.
8. What about your Mi Unlock Status before and after the brick?
Before: Unlocked.
After: Unlocked (I thought it would lock the bootloader again, but it didn't).
9. My phone is bricked and I don't know how much battery my phone has left. What should I do?
You should let it turn off due to 0% battery and charge it fully. I do not recommend you flash like I did, without knowing how much battery I had (yes, I took my chances there). As far as I know, any phone in fastboot mode does not charge its battery.
10. Why is fastboot working in your case?
I don't know. I suspect flashing the preloader and the lk from this OP Redmi Note 8 Pro - The Megathread helped, but it's just a hunch.
11. Will you attempt to flash a Custom ROM again?
After taking a break, yes.
12. Is this phone now unbrickable?
As long as fastboot mode works, perhaps. More feedback is required.
Files:
SDK Platform-Tools (adb/fastboot): https://developer.android.com/studio/releases/platform-tools
Stock ROM used: http://bigota.d.miui.com/V10.4.2.0.PGGMIXM/begonia_global_images_V10.4.2.0.PGGMIXM_20191024.0000.00_9.0_global_270117fdb2.tgz
Feedback:
Due to my job I'm currently very short on time during the week to follow this thread, so it would be immensely helpful to have your feedback on this procedure.
Feedback from people who's phones are bricked with blank screens would be very appreciated, specifically if they can enter fastboot mode without any visual cues from their phones. If any bricked state allows fastboot mode, it seems this phone is easily unbrickable.
Thanks:
strongst for his understanding and in reopening this thread.
Compass.

Thread open again
strongst
Forum Moderator

Hi there,
Is there anyway to fix the hardbrick without the authorized account?? If not how can i find someone to do this for me?

andrewff2 said:
Hi there,
Is there anyway to fix the hardbrick without the authorized account?? If not how can i find someone to do this for me?
Click to expand...
Click to collapse
Yes, if you can access fastboot mode in your phone like I mentioned above. If hardbrick means loss of access to fastboot mode/recovery/system/basically everything, you'll need to find some other unbrick method.
If fastboot mode is working for you, you can unbrick your device by yourself with nothing else than the fastboot command and the Stock ROM. No need for any extra tools/programs.
inb4: The fastboot command is in the SDK Platform-Tools package I linked in the OP.
Compass.

Compass Linux said:
Yes, if you can access fastboot mode in your phone like I mentioned above. If hardbrick means loss of access to fastboot mode/recovery/system/basically everything, you'll need to find some other unbrick method.
If fastboot mode is working for you, you can unbrick your device by yourself with nothing else than the fastboot command and the Stock ROM. No need for any extra tools/programs.
inb4: The fastboot command is in the SDK Platform-Tools package I linked in the OP.
Compass.
Click to expand...
Click to collapse
Yeah i tried this method but fastboot cannot even detect device

andrewff2 said:
Yeah i tried this method but fastboot cannot even detect device
Click to expand...
Click to collapse
That's a shame.
It's worth trying different USB ports, cables etc.
I usually enter fastboot mode first and only then I connect the phone to my PC.
Then "./fastboot devices" and my phone is listed.
Compass.

Compass Linux said:
Yes, if you can access fastboot mode in your phone like I mentioned above. If hardbrick means loss of access to fastboot mode/recovery/system/basically everything, you'll need to find some other unbrick method.
If fastboot mode is working for you, you can unbrick your device by yourself with nothing else than the fastboot command and the Stock ROM. No need for any extra tools/programs.
inb4: The fastboot command is in the SDK Platform-Tools package I linked in the OP.
Compass.
Click to expand...
Click to collapse
Yeah i tried this method but fastboot cannot even detect device in windows appear com5 in Windows but fastboot do nothing just white led that blinks

andrewff2 said:
Yeah i tried this method but fastboot cannot even detect device in windows appear com5 in Windows but fastboot do nothing just white led that blinks
Click to expand...
Click to collapse
I can't give support in this area, but do you have the proper Windows drivers installed?
If you do and it still doesn't work, try a different computer. If you can use a Linux machine somehow it's worth trying. With Linux I didn't need to install anything besides the SDK Platform-Tools package to communicate with my phone.
I think you can unbrick your phone, because fastboot mode is loading (if it's loading it should reply to fastboot commands).
Compass.

Compass Linux said:
I can't give support in this area, but do you have the proper Windows drivers installed?
If you do and it still doesn't work, try a different computer. If you can use a Linux machine somehow it's worth trying. With Linux I didn't need to install anything besides the SDK Platform-Tools package to communicate with my phone.
I think you can unbrick your phone, because fastboot mode is loading (if it's loading it should reply to fastboot commands).
Compass.
Click to expand...
Click to collapse
Thanks for the help man but no the only thing is the white led that sometimes blink nothing more no vibration no sound no screen nothing.....
I'm trying to find someone who can help me with this but no one responds... sad

andrewff2 said:
Thanks for the help man but no the only thing is the white led that sometimes blink nothing more no vibration no sound no screen nothing.....
I'm trying to find someone who can help me with this but no one responds... sad
Click to expand...
Click to collapse
It seems the only solution for you is this (for now): [GUIDE] [begonia] UNBRICK - stuck on DA mode / Authorised Service Account required
Which you've probably read already.
I think you either do that or wait to see if another unbrick method appears.
Compass.

I have the same problem as yours and tried your solution but after i run flash_all.bat it just opens and closes in a split-second and i have no idea whether it works or not. Should I wait a couple of minutes or just try again?

advan93 said:
I have the same problem as yours and tried your solution but after i run flash_all.bat it just opens and closes in a split-second and i have no idea whether it works or not. Should I wait a couple of minutes or just try again?
Click to expand...
Click to collapse
That's not normal.
What you should see are various files being flashed along with their progress meter.
I'm assuming you're double clicking the .bat file. Instead of doing that, open a CMD Prompt and use that instead.
Compass.

Question I'm stumped - Fastboot mode LE2125 not responding to ADB commands

When I updated my LE2125 Oneplus 9 pro 5G to C.63 I lost root ( I tried the Magisk way when I previously updated and it allowed me to update and then preserve my root) and couldn't get it back.
So I decided to downgrade using MSM Tool and now I am on Oxygen OS build 11.2.2.2.LE15AA and I can no longer use any ADB commands when in Fastboot mode (the device does not respond), my laptop does not acknowledge using ADB Device (but it does when NOT in Fastboot mode).
The device shows Device State Locked.
When booting my phone up, I made sure in Developers options to set OEM Unlocking checked ON, as well as USB debugging checked ON.
When on Oxygen OS build 11.2.2.2.LE15AA and reboot into Recovery , I have the "Advanced" option, but not if I upgrade to LE2125_11.C.48_1480_202204082113 and rebooting into Recovery, choosing English, the next screen does not show the "Advanced" option as an available choice..
Laptop on Windows 10, have used MSM tool with my LE2125 with no issues. Anybody have any ideas?

LormaD said:
When I updated my LE2125 Oneplus 9 pro 5G to C.63 I lost root ( I tried the Magisk way when I previously updated and it allowed me to update and then preserve my root) and couldn't get it back.
So I decided to downgrade using MSM Tool and now I am on Oxygen OS build 11.2.2.2.LE15AA and I can no longer use any ADB commands when in Fastboot mode (the device does not respond), my laptop does not acknowledge using ADB Device (but it does when NOT in Fastboot mode).
The device shows Device State Locked.
When booting my phone up, I made sure in Developers options to set OEM Unlocking checked ON, as well as USB debugging checked ON.
When on Oxygen OS build 11.2.2.2.LE15AA and reboot into Recovery , I have the "Advanced" option, but not if I upgrade to LE2125_11.C.48_1480_202204082113 and rebooting into Recovery, choosing English, the next screen does not show the "Advanced" option as an available choice..
Laptop on Windows 10, have used MSM tool with my LE2125 with no issues. Anybody have any ideas?
Click to expand...
Click to collapse
You can't use adb commands in fastboot. You can only use fastboot commands. fastboot devices

jamescable said:
You can't use adb commands in fastboot. You can only use fastboot commands. fastboot devices
Click to expand...
Click to collapse
i meant to say fastboot commands...
i.e. fastboot devices, fastboot oem unlock, fastboot boot boot.img

LormaD said:
i meant to say fastboot commands...
i.e. fastboot devices, fastboot oem unlock, fastboot boot boot.img
Click to expand...
Click to collapse
Then it's a driver issue

jamescable said:
Then it's a driver issue
Click to expand...
Click to collapse
So you think it's a driver issue when the phone responds to my laptop when "Not" in Fastboot mode, and then no longer responds to commands when in Fastboot mode?...
Will try that...

LormaD said:
So you think it's a driver issue when the phone responds to my laptop when "Not" in Fastboot mode, and then no longer responds to commands when in Fastboot mode?...
Will try that...
Click to expand...
Click to collapse
Yes. A lot of people say adb works but fastboot doesn't. Usually there's a driver update in windows. Google it man. Very common

I had the same problem. After messing around with some drivers it finally started working

GeminiRx said:
I had the same problem. After messing around with some drivers it finally started working
Click to expand...
Click to collapse
Damn Drivers...
I did a system restore to an earlier point in Windows 10... I then redownloaded and installed oneplus USB drivers and it worked.