How to switch A/B slots? - LG V35 Questions & Answers

So I had a hell of a time updating to Pie and trying to keep root, including getting stuck in fastboot mode. Realized it wouldn't work if I kept my 8.0 engineering ABL, so I flashed my abl_a with the Pie version. So now I'm stuck with no root Pie, and my fastboot enabled engineering ABL is on the other slot. I remember reading somewhere here (unfortunately can't remember exactly, and can't find it anymore) that you can switch slots by repeatedly interrupting the boot sequence, but either I was doing it wrong, or I didn't do it enough times. Anyone know the exact process?

There might be a fastboot command for it.
This one says that a user tried "fastboot set_active b" but it didnt work for them, you can try that to see if it works for you, though the highest voted answer has different commands to try.

alatnet said:
There might be a fastboot command for it.
This one says that a user tried "fastboot set_active b" but it didnt work for them, you can try that to see if it works for you, though the highest voted answer has different commands to try.
Click to expand...
Click to collapse
Alas, I don't have fastboot on my active slot. I've got a real chicken and egg problem here. But yeah, "fastboot --set-active=b" would have worked if I had fastboot.

Hope you can enter download mode right?
Then boot Linux and use LGLAF:
Code:
python lglaf.py
!SABS 0
(0 for a, or 1 for b)
P.S.: All in one Linux image and needed tools is always is FWUL

vlad48 said:
Hope you can enter download mode right?
Then boot Linux and use LGLAF:
Code:
python lglaf.py
!SABS 0
(0 for a, or 1 for b)
P.S.: All in one Linux image and needed tools is always is FWUL
Click to expand...
Click to collapse
Well, that worked, except the fastboot I thought was working doesn't work. "Fastboot devices" shows ??????????????? and causes my phone to reboot into fastboot again. I think I'm hardbricked this time unless there's some hardware way to get back into slot A. Thanks anyway.
Oh, yeah, my laf doesn't work on this slot either.
Update: Ok, spoke too soon, had a heart attack too soon, it was the USB 3.0 port. Hell, my computer only has 2 USB 2.0 ports. Had to use an old version of fastboot that doesn't even support slots to flash for some reason, but it worked. I think next time I'll just get a more dev friendly phone. Thanks again though, your trick worked.

Well it is far from being hard bricked - it is a 5 minutes JTAG fix.
Search for @vbenkovskyy or @octoplus in Telegram and next time before upgrading make sure your both slots are bootable.

Related

Fastboot discussion.

I have searched and couldn't find a fastboot thread. So here it is.
I found out fastboot is working on Linux.
Bad news is Windows seems to need another driver for fastboot.
Please help look for a windows driver or make one.
The fastboot commands all seem to work fine.
Here you guys go! Enjoy.
Code:
[SIZE=5][SIZE=3][SIZE=5][SIZE=3]adb reboot-bootloader
fastboot -i 0x1949 command_here[/SIZE][/SIZE][/SIZE][/SIZE]
Just noticed pokey9000 said this but it was overlooked.
pokey9000 said:
That's it. And you're running fastboot as "fastboot -i 0x1949 your_command_here", and you have udev set to allow permissions for that VID (or are running as root) in Linux?
Click to expand...
Click to collapse
Thank you.
Still don't believe me, look at the last picture.
I'm having issues with some commands. Please test it out and enjoy!
shimp208 said:
In the Fire TV section a fastboot cable was created by splicing two USB A to B cables together, so that the A to A ends were together which when connected from your computer to the Fire TV on bootup put the device in fastboot mode, in the process then your computer recognized (Running Windows 8 was the example given) the device and installed the proper drivers. Since the devices are similar, a potential solution would be use the cable, have the computer recognize it and install the drivers, then backup the drivers, and share them here for others to use.
Click to expand...
Click to collapse
I'm quite sure the cable isn't the issue. Also that's just it, I can't get windows to recognize it or find much info about it. The adb driver for the device isn't enough I guess. The funny thing is windows says it's working properly as 'Kindle' for a little while when you plug it in (while in bootloader) then device manager refreshes and reports 'cannot start'. I tried launching 'fastboot devices' many times but still nothing. I think it needs a software fix and not a hardware one but I have no past experience using fastboot. So... noob alert.
btw the driver windows tries to use is ms_comp_mtp(Generic driver installed=true) and adb uses the Amazon one on the fourm here.
DevNode status Value:
01802400
DN_HAS_PROBLEM
DN_DISABLEABLE
DN_NT_ENUMERATOR
DN_NT_DRIVER
Also Bus reported device description Value:
fastboot
VID=1949 & PID=000C
(0x1949 && 0x000c)
Current Driver files:
\system32\DRIVERS\UMDF\WpdMtpDr.dll
\system32\DRIVERS\winusb.sys
\system32\DRIVERS\WUDFRd.sys
\system32\WpdMtp.dll
\system32\WpdMtpUS.dll
We need someone good on this.
I have a problem
I don't think there's ever been a question of getting into fastboot mode by using the adb reboot-bootloader command.
The issue is how to enter fastboot if the device is semi-bricked.
The device has source in the original bootloader to boot into fastboot mode if both volume buttons are pressed while powering on the device. But this has since been altered and now will only work if the device is unlocked.
Hashcode said:
I don't think there's ever been a question of getting into fastboot mode by using the adb reboot-bootloader command.
The issue is how to enter fastboot if the device is semi-bricked.
The device has source in the original bootloader to boot into fastboot mode if both volume buttons are pressed while powering on the device. But this has since been altered and now will only work if the device is unlocked.
Click to expand...
Click to collapse
Is flashing the stock .bin file any different than doing a factory reset?
I am bricked, have root, have adb, can get fastboot using adb reboot-bootloader in windows 8. I also have a Linux box if necessary.
saphi95 said:
I have a problem
Click to expand...
Click to collapse
I would recommend taking a look at this thread here, specifically the "Fixing No Permissions Error" section which should allow you to fix the problem your encountering.
dcoig1 said:
Is flashing the stock .bin file any different than doing a factory reset?
I am bricked, have root, have adb, can get fastboot using adb reboot-bootloader in windows 8. I also have a Linux box if necessary.
Click to expand...
Click to collapse
Fastboot works with win8? Not with win7.1 If you have fastboot working with win8 please go to device manager (when your in the bootloader) click properties on the device then look for what driver it uses.
Hashcode said:
I don't think there's ever been a question of getting into fastboot mode by using the adb reboot-bootloader command.
The issue is how to enter fastboot if the device is semi-bricked.
The device has source in the original bootloader to boot into fastboot mode if both volume buttons are pressed while powering on the device. But this has since been altered and now will only work if the device is unlocked.
Click to expand...
Click to collapse
My main reason is to get fastboot working with windows. I just can't. Linux seems to work with fastboot but I can't access it via windows.
Just uninstall the kindle driver and replace it with the generic fastboot one
hello all,
i've kindle fire hdx 7" , no adb, grey screen logo then shutdown and goes to black screen.
when connected using cable, it show new devices... QHSUSB_BULK and sometime unknown devices.
press hold power button and volume up only go to recovery mode, but cannot recovery the system..
always go to grey screen logo...
sorry for my bad english language...
hope all of you, understand what i mean here
i need solution for fix the problem soon. thanks
I think all that works is reboot into fastboot mode. Windows 8 says no drivers are loaded. I tried a command (can't remember what) and it just went out to lunch so... I guess windows 8 isn't working either. Only to put the device in fastboot.
there are three oem commands:
oem device-info
oem idme
oem relock
Click to expand...
Click to collapse
but it doesn't support oem unlock so there must be another way of unlocking the bootloader, when you try some of the commands the device returns "not allowed for locked hw". Does anyone know what the "hw" is ?
hw = hardware?
MaximilianOzora said:
hello all,
i've kindle fire hdx 7" , no adb, grey screen logo then shutdown and goes to black screen.
when connected using cable, it show new devices... QHSUSB_BULK and sometime unknown devices.
press hold power button and volume up only go to recovery mode, but cannot recovery the system..
always go to grey screen logo...
sorry for my bad english language...
hope all of you, understand what i mean here
i need solution for fix the problem soon. thanks
Click to expand...
Click to collapse
Read up on this bud.
Hi,
I have a bricked kindle hdx 8.9 that stops at "Kindle Fire" boot screen. I am a newbie at these things.
Just discovered that it still respond to some adb queries. Sounds like there is still hope to recover... Could it be the bootloader is messed up? Anyway to reload an image boot file to repair?
Also "fastboot reboot-bootloader" puts it into fastboot mode...with the status "ready"....and i just dont know how to proceed. Any one can help?
uhg
Facepalm
just back a little: was rooted in April but with subsequent amazon auto updates - didn't have su status. But I was able to load apps & files, installed vpns, quite a few docs,mp4 files, etc. Not really using much of the new freedom or whatever was left of it... Nothing exciting.
Was working well until one fine sunday afternoon, just 2 weeks ago when it just simply stopped after rebooting from a previous low battery charge. Was told it could be an interrupted routine update when the battery power just fell below threshold - but thot it wouldn't have erase the previous image before the new update is effective. Or it could possibly be a deleted file that is related to the booting process as I did a bit of clean up prior to the last reboot?
In the meantime, I did some adb shell/pull to explore or extract the files, photos,etc in /sdcard & other places back to my PC just in case they were not backup by the cloud. Maybe it was not bricked...but just lost a boot file or something...
In a bad situation, have absolutely zero ADB access as my build.prop is botched (bad permissions) and I did a factory reset in hopes of recovering. There is a "fastboot cable" on amazon that says it will reboot a hdx into fastboot mode, but I'm unsure of it's legitimacy. Help?
here try
Tumbtack said:
In a bad situation, have absolutely zero ADB access as my build.prop is botched (bad permissions) and I did a factory reset in hopes of recovering. There is a "fastboot cable" on amazon that says it will reboot a hdx into fastboot mode, but I'm unsure of it's legitimacy. Help?
Click to expand...
Click to collapse
This thread.read read read http://forum.xda-developers.com/showthread.php?t=2588608
I don't quite understand. Why is a special cable required for this? What makes it any different from the standard one that comes with the device?
I don't know if this will add anything to the discussion...but I can confirm fastboot is working on Ubuntu 14.04. I am using a kindle fire HDX 7" and it detects it on devices..and most commands work. Sometimes the terminal must be closed and reopened for commands to go through..
fastboot oem unlock works..or rather it says "Okay" but I'm unable to flash anything.

[Q] Permanent problem with Unlocking Bootloader Nexus S

Hi guys,
I searched forums, web with no positive results. So I start a new thread. Here is the situation: one day my Nexus S (Worldwide edition) froze on restarting with the Google Logo on the screen. Every time I try to turn the phone on it stacks at Google logo. When in the fastboot mode the status is Locked. Every time I try fastboot oem unlock I get Phone’s prompt with Yes or Not to unlock bootloader and after choosing Yes, the status doesn’t change to Unlock. Tried on Linux, Mac, Windows (drivers installed successfully), the same result. Tried to force Flash Stock + Unroot in Wugfresh, doesn’t work due to the Locked Bootloader.
typing "adb devices" in cmd (should return the device number) shows:
List of devices attached
......
Empty line above
Any word of advise how to force Unlocking the Bootloader would be greatly appreciated. Please help. Thank you!
alpheus said:
Hi guys,
I searched forums, web with no positive results. So I start a new thread. Here is the situation: one day my Nexus S (Worldwide edition) froze on restarting with the Google Logo on the screen. Every time I try to turn the phone on it stacks at Google logo. When in the fastboot mode the status is Locked. Every time I try fastboot oem unlock I get Phone’s prompt with Yes or Not to unlock bootloader and after choosing Yes, the status doesn’t change to Unlock. Tried on Linux, Mac, Windows (drivers installed successfully), the same result. Tried to force Flash Stock + Unroot in Wugfresh, doesn’t work due to the Locked Bootloader.
typing "adb devices" in cmd (should return the device number) shows:
List of devices attached
......
Empty line above
Any word of advise how to force Unlocking the Bootloader would be greatly appreciated. Please help. Thank you!
Click to expand...
Click to collapse
It looks like your device is not recognized in Fastboot mode...
Have you turned on USB Debugging while connecting PC and Allow in Device when Prompt some message ..
Go to fastboot mode and write this command... fastboot devices
If it will give you a message like this
List of devices
1235456785164
Then your devices is successfully recognized...:good:
It is not recognized by adb devices, but:
fastboot devices - gives the following output:
ERROR: could not get pipe properties
3331E6EBCA6000EC fastboot
Click to expand...
Click to collapse
fastboot oem unlock - gives the following:
ERROR: could not get pipe properties
...
FAILED (remote: Erase Fail)
finished. total time: 4.753s
Click to expand...
Click to collapse
alpheus said:
It is not recognized by adb devices, but:
fastboot devices - gives the following output:
fastboot oem unlock - gives the following:
Click to expand...
Click to collapse
Pretty sure you have a bad USB cable, the error means the fastboot binaries are working on PC but can not connect to device, often this is due to a bad USB cable or port
Try a new cable, one you can verify works transferring data
demkantor said:
Pretty sure you have a bad USB cable, the error means the fastboot binaries are working on PC but can not connect to device, often this is due to a bad USB cable or port
Try a new cable, one you can verify works transferring data
Click to expand...
Click to collapse
Thanks, I tried 3 different cables on 3 different operating systems, with the same problem unlocking the fastboot. When I send fastboot oem unlock the device opens a prompt with Yes or No choice, but after choosing Yes, it stays Locked
Something indeed is strange...
So fastboot is for bootloader and adb is for within os and in recovery.
Try booting into recovery and see if adb works, also boot normal into your bootloop and see if adb works there too
demkantor said:
Pretty sure you have a bad USB cable, the error means the fastboot binaries are working on PC but can not connect to device, often this is due to a bad USB cable or port
Try a new cable, one you can verify works transferring data
Click to expand...
Click to collapse
demkantor said:
Something indeed is strange...
So fastboot is for bootloader and adb is for within os and in recovery.
Try booting into recovery and see if adb works, also boot normal into your bootloop and see if adb works there too
Click to expand...
Click to collapse
Loading into basic recovery and trying to wipe data/factory reset - doesn't work. adb devices returns the following output:
./adb-linux devices
* daemon not running. starting it now *
* daemon started successfully *
List of devices attached
****empty line here****
Somehow, adb doesn't recognize the device, whereas fastboot devices shows it.
Is there a way to flash new bootmode with the currently locked bootloader?
Thank you!
alpheus said:
Loading into basic recovery and trying to wipe data/factory reset - doesn't work. adb devices returns the following output:
./adb-linux devices
* daemon not running. starting it now *
* daemon started successfully *
List of devices attached
****empty line here****
Somehow, adb doesn't recognize the device, whereas fastboot devices shows it.
Is there a way to flash new bootmode with the currently locked bootloader?
Thank you!
Click to expand...
Click to collapse
I am damn Sure What's Your problem is, ADB is not working..
PROCEDURE:-
1) Download My attachement and unzip it and Place it in Folder...
See image 1.png
2) Go to that folder and Press CTRL+SHIFT+ Right click on mouse and Select Open Command Window here..
See image 2.png
3) Now type here Fastboot devices and Now you will get Those list of devices Number..
See image 3.png
If Everything will be done as Procedure and you will get List of devices Number... Now, You type those command for Unlocking bootloader and Root Your Devices...:good:
Hope this Guide will help..
UPDATE (resolved)
Here is an update. Hope this would help others with similar issue, as I've read many threads and folks complaining that they weren't able to unlock fastboot and further root their Nexus S, and who can't boot the phone, which stacked with Google Logo (soft loop). This was the case with my device and finally I got it resolved. I've read some guy tried to hit the phone and after that he was able to boot phone normally. It related to some hardware electrical circle issue. Anyways, I tried to hit my phone by placing it under the direct sun in balcony for some time until the phone got hot and then power it on. And ooops, my phone started booting passed by that Google Logo which was the good sign. Once the phone booted up, I went ahead and activated USB debugging and restarted the phone into the Fastboot mode. while the phone was still hot and in Fastboot mode I run "fastboot oem unlock" and hey, fastboot is Unlocked! Again, this was done while the phone was hot, any previous attempts (read above) weren't successful. From that point, I went ahead and rooted my Nexus S by Nexus Root Toolkit, available on wugfresh.com/nrt, without a slightest problem. Now my phone is fully rooted, bootable and working fine. I thank all who replied to my thread and tried to help and hope this info would help someone with the similar issue.
Rushabh22 said:
I am damn Sure What's Your problem is, ADB is not working..
PROCEDURE:-
1) Download My attachement and unzip it and Place it in Folder...
See image 1.png
2) Go to that folder and Press CTRL+SHIFT+ Right click on mouse and Select Open Command Window here..
See image 2.png
3) Now type here Fastboot devices and Now you will get Those list of devices Number..
See image 3.png
If Everything will be done as Procedure and you will get List of devices Number... Now, You type those command for Unlocking bootloader and Root Your Devices...:good:
Hope this Guide will help..
Click to expand...
Click to collapse
Thank you for your help and suggestions.
Q Mobile X 32
bootloader oem unlock problem
plz help
Q-mobile said:
Q Mobile X 32
bootloader oem unlock problem
plz help
Click to expand...
Click to collapse
Wrong device thread..
Try here..
https://forum.xda-developers.com/showthread.php?t=2363923
Setting.Out said:
Wrong device thread..
Try here..
https://forum.xda-developers.com/showthread.php?t=2363923
Click to expand...
Click to collapse
can you help me in rooting Qmobile x32
Q-mobile said:
can you help me in rooting Qmobile x32
Click to expand...
Click to collapse
That thread didn't help?
Here's what the guide says...

Need help unlocking bootloader

I've tried several times to unlock the bootloader and it will not respond to any commands once in fastboot mode. I've tried to follow this guide https://www.xda-developers.com/oneplus-6t-unlock-bootloader-root/ but whenever I type "fastboot oem unlock" it just says "waiting for any device" and nothing happens. I have usb debugging enabled and oem unlocking on so I don't know what I'm doing wrong. I have the platform tools from Google installed. I can run adb and type "adb reboot bootloader" and it responds, but after that, no fastboot commands work. I mainly just wanted to root so I could restore my apps and data via Titanium Backup. Is there a temp root solution I can use? Or has anyone else experienced this?
Let me know if you need more info. Hopefully this is an easy one.
What do you get if you run "adb devices"?
thedrizzle said:
What do you get if you run "adb devices"?
Click to expand...
Click to collapse
ADB: USAGE: unknown command DEVICES
Or do you mean run it while it's in fastboot?
I feel like it's something simple I'm missing. I've never had trouble figuring this stuff out. I've been rocking an HTC M8 on VenomRom since forever ago so it was time for an upgrade. I've looked at several different guides, but some of them seem to be incomplete. Like the guide at the official TWRP page says to power off the phone. Then it says to hold volume up to go into fastboot mode. I tried following those instructions to a T, but that didn't actually do anything. It doesn't say where to put the twrp.img file, it just says to run the command to boot the .img. Getting into fastboot isn't a problem. It's that no matter what I do once it's in fastboot, I just get "waiting for any device". I've tried the OnePlus6t Manager because I thought maybe I needed a one-click method. But again, it gets to fastboot and goes nowhere from there.
blockhead428 said:
I feel like it's something simple I'm missing. I've never had trouble figuring this stuff out. I've been rocking an HTC M8 on VenomRom since forever ago so it was time for an upgrade. I've looked at several different guides, but some of them seem to be incomplete. Like the guide at the official TWRP page says to power off the phone. Then it says to hold volume up to go into fastboot mode. I tried following those instructions to a T, but that didn't actually do anything. It doesn't say where to put the twrp.img file, it just says to run the command to boot the .img. Getting into fastboot isn't a problem. It's that no matter what I do once it's in fastboot, I just get "waiting for any device". I've tried the OnePlus6t Manager because I thought maybe I needed a one-click method. But again, it gets to fastboot and goes nowhere from there.
Click to expand...
Click to collapse
Do not forget to enable OEM Unlocking in Developer options
Sent from my ONEPLUS A6013 using Tapatalk
Just my 2 cents I'm not an expert but it Might be your drivers or when you installed adb did you do it with administrator rights? The first time tried I couldn't get it to work it wasn't detecting the device in fastboot so I reinstalled adb and then it worked
I just rooted mines today but I went off a YouTube video I looked up and they had everything you needed to download in the description. Took about ten minutes ? I'm not sure if I can put a link on here
DinarQ8 said:
Do not forget to enable OEM Unlocking in Developer options
Sent from my ONEPLUS A6013 using Tapatalk
Click to expand...
Click to collapse
I've done that also. Developer options are enabled, USB debugging, and OEM unlocking. Are there newer drivers I need? But if that was an issue, it wouldn't allow me to do "adb reboot bootloader". It'll reboot to fastboot mode, but after typing "fastboot oem unlock" it just says waiting for any device.
blockhead428 said:
ADB: USAGE: unknown command DEVICES
Or do you mean run it while it's in fastboot?
Click to expand...
Click to collapse
In the picture it shows you typed your commands all capitals letters
Dr8ven said:
Just my 2 cents I'm not an expert but it Might be your drivers or when you installed adb did you do it with administrator rights? The first time tried I couldn't get it to work it wasn't detecting the device in fastboot so I reinstalled adb and then it worked
I just rooted mines today but I went off a YouTube video I looked up and they had everything you needed to download in the description. Took about ten minutes I'm not sure if I can put a link on here
Click to expand...
Click to collapse
Try and post it. It let me post the link to the guide in the initial posting. You could be on to something.
This is where I got my version of ADB. https://developer.android.com/studio/releases/platform-tools It's not so much an "install" as it is unpacking a zip archive.
twinnfamous said:
In the picture it shows you typed your commands all capitals letters
Click to expand...
Click to collapse
I did not know it was case-sensitive. I just tried again and it seems to show my devices (I'm transferring files off of my m8 which is why it shows two).
Good call, brother! Where do I go from here?
blockhead428 said:
I did not know it was case-sensitive. I just tried again and it seems to show my devices (I'm transferring files off of my m8 which is why it shows two).
Good call, brother! Where do I go from here?
Click to expand...
Click to collapse
you need to be careful in fastboot. One wrong command can lead to a catastrophe.
I used the adb installer from the same video. Once you unzip it. It's an .exe file which I granted administrator rights to install... it installs adb and drivers and it worked for me
That's the video and did it to a T
Another thing don't use power shell use command
twinnfamous said:
you need to be careful in fastboot. One wrong command can lead to a catastrophe.
Click to expand...
Click to collapse
I'm following a video now. I'm thinking I didn't have the ADB drivers installed so I'm trying that now.
Let us know how it turned out ?
Dr8ven said:
Let us know how it turned out
Click to expand...
Click to collapse
Still getting nowhere. I thought my problem was that I didn't intall the drivers as administrator. So I did it again, following this video https://www.youtube.com/watch?v=B-XZy27wy5o When I reboot into bootloader, I type "fastboot devices" and it just goes right back to the command prompt. Nothing happens. I guess I'm going to try the old fashioned computer restart and see what happens. If all else fails, I can unplug it from the wall and blow on it, lol.
I swear, I've never been this simple before.
blockhead428 said:
Still getting nowhere. I thought my problem was that I didn't intall the drivers as administrator. So I did it again, following this video https://www.youtube.com/watch?v=B-XZy27wy5o When I reboot into bootloader, I type "fastboot devices" and it just goes right back to the command prompt. Nothing happens. I guess I'm going to try the old fashioned computer restart and see what happens. If all else fails, I can unplug it from the wall and blow on it, lol.
I swear, I've never been this simple before.
Click to expand...
Click to collapse
::sigh:: Still no joy. Restarted pc, ran adb devices and it showed my phone. So i reboot into bootloader, typed fastboot devices and it still took me right back to the command prompt.
blockhead428 said:
::sigh:: Still no joy. Restarted pc, ran adb devices and it showed my phone. So i reboot into bootloader, typed fastboot devices and it still took me right back to the command prompt.
Click to expand...
Click to collapse
I was thinking that maybe the latest OTA broke the bootloader unlock process, but someone else in this thread said they just unlocked theirs. I don't understand what the issues is. I've followed this video so closely I could re-enact it in my sleep.
Got it! I had two sets of drivers installed so I uninstalled both and it finally recognized my phone in fastboot. My old drivers from my m8 from 2014 were probably interfering with it. I knew it was something simple. I feel like Carl in Sling Blade when they bring him the lawn mower engine and he says "ain't got no gas in it, mmhmmm".
Nice! For a noob I wasn't too far off lol it just had to be one of those two issues
Enjoy happy rooting ?
blockhead428 said:
Got it! I had two sets of drivers installed so I uninstalled both and it finally recognized my phone in fastboot. My old drivers from my m8 from 2014 were probably interfering with it. I knew it was something simple. I feel like Carl in Sling Blade when they bring him the lawn mower engine and he says "ain't got no gas in it, mmhmmm".
Click to expand...
Click to collapse
Hi I have the same problem, when fastboot it says waiting device. I also had rooted my other phone, so how to find my other driver phone in device manager because I can't find it

Magisk attempt gone horribly wrong on Pixel 3a, haven't found the answer

So I tried to root my Pixel 3a, long story short it went into a boot loop, I got it back into fastboot mode, but now my pc can't see it. when using "adb devices" search comes up with zilch. when plugged into the pc it knows it's plugged in but I can't see it. Has anyone else seen this, or possibly know a way to at least get me to where I can flash the stock image on?
jedivulcan said:
You have to use "fastboot" commands in fastboot mode. Like ... "fastboot reboot bootloader" or "fastboot boot namearecovery.img" ... You might be able to boot into TWRP recovery and flash the Magisk uninstaller.
Click to expand...
Click to collapse
call me noob or insane, but it wasn't working, but then I typed that in and it rebooted into fastboot. Off to try to follow these steps and hopefully get this thing working again.
tcshaddix said:
call me noob or insane, but it wasn't working, but then I typed that in and it rebooted into fastboot. Off to try to follow these steps and hopefully get this thing working again.
Click to expand...
Click to collapse
It wasn't working because you were trying to use adb commands while in fastboot.
tcshaddix said:
So I tried to root my Pixel 3a, long story short it went into a boot loop, I got it back into fastboot mode, but now my pc can't see it. when using "adb devices" search comes up with zilch. when plugged into the pc it knows it's plugged in but I can't see it. Has anyone else seen this, or possibly know a way to at least get me to where I can flash the stock image on?
Click to expand...
Click to collapse
Should've checked connected devices when in bootloader mode:
fastboot devices

OTG Mouse to get final Essential update - touch screen still won't work

After reading for hours, I was successful to find an OTG micro-USB adapter with male USB-A end which allowed a Logitech dongle to be inserted and the mouse allowed me to start afresh from a factory reset. The touch screen didn't work.
There was an OTA update and I got all excited thinking, "This will be the update that fixes the touch (or lack thereof) issue."
Sadly, after the message said this was the final update, the touch screen still didn't work.
I was successfully able to enable USB Debugging because of the OTG Mouse.
When I connect to the PC and run an ADB command (e.g. adb devices), a message pops up asking to verify I trust the RSA Fingerprint for that computer and to remember that device.
Now my huge predicament: there is no way for me to touch the checkbox and choose OK.
Once I unplug in the cable to connect the OTG Mouse, the dialog box disappears.
I read about TeamViewer on the PC and TeamViewer Host from the Play Store. I installed both and was able to see the Essential Phone on the computer but whenever I touched the screen of the computer (or used the trackpad), nothing happened on the phone.
I tried pressing spacebar thinking that might enable the checkbox but no remote response on the phone.
I'm so close...all I need is one checkbox and one ok and it'll remember the USB Debugging settings.
From there I can then figure how to either downgrade from Android 10 or hopefully some kind soul can let me know what file to install so I can get this stupid touch screen to work.
I explained in a lot of detail as I wanted you folks to know I've tried many options to troubleshoot this problem before asking for help.
If there's a non-USB Debugging checkbox checked way in Fastboot Mode (e.g. ADB Sideload in Recovery), I'm willing to try that.
Thanks.
Update 2020-07-07: I had an idea to connect a SteelSeries Stratus XL wireless gaming controller to the phone via bluetooth and was successfully able to use the controls of the controller to enable the checkbox and remember the RSA Fingerprint for USB Debugging. Whooo-hoo! Now for the rest of the matter...getting this darn touch screen working with an device image that solves the problem....
I had the same problem after flashing the newest (and final) Image on top of a rooted, very old marshmallow build.
I found a fix on reddit however, and hopefully it works for you too.
I tried the second method described there:
1. Connect to fastboot to unlock bootloader and critical
Code:
fastboot flashing unlock
(didn't do anything for me since I was already unlocked)
Code:
fastboot flashing unlock_critical
Let the phone wipe itself and reboot, then go into fastboot again
2. Then flash the image of September 2018 (PH1-Images-PPR1.180905.036) via the "flashall.bat". After a reboot my touchscreen worked again.
3. Upgrade to the newest image or whichever one you like.
I don't understand the whole problem exactly, so maybe you could try flashing the newest image directly after the unlock_critical step, but I just followed the instructions I found.
Good luck!
Thanks for the suggestion and the link for the file.
When I try and run the command
Code:
fastboot flashing unlock
in fastboot mode, I keep getting the message "Waiting for device".
Same thing, when I try and run the flashall.bat file.
I booted in to FastBoot mode, but when I type adb devices in an admin command prompt, it doesn't show any devices listed, even though adb devices does show the phone listed when the phone has booted up normally.
I have:
uninstalled the Essential Phone driver and reinstalled it (multiple times).
installed the 15 Seconds ADB installer and uninstalled it (multiple times).
rebooted the Windows 10 computer multiple times.
IconBoy said:
Thanks for the suggestion and the link for the file.
When I try and run the command
Code:
fastboot flashing unlock
in fastboot mode, I keep getting the message "Waiting for device".
Same thing, when I try and run the flashall.bat file.
I booted in to FastBoot mode, but when I type adb devices in an admin command prompt, it doesn't show any devices listed, even though adb devices does show the phone listed when the phone has booted up normally.
I have:
uninstalled the Essential Phone driver and reinstalled it (multiple times).
installed the 15 Seconds ADB installer and uninstalled it (multiple times).
rebooted the Windows 10 computer multiple times.
Click to expand...
Click to collapse
Make sure to use a proper cable and not the one that comes with the phone for charging.
I use the one from my Nexus 6p. The cable from Essential is only for charging, not data transfer.
I'm using a USB-A TO USB-C cable which shows device in normal boot mode.
I have tried three different cables which all work when using adb devices in normal boot mode.
Still no phone when List of devices attached is shown.
Just for clarity: adb and fastboot are completely different modes. To test if you successfully booted into fastboot and have a working connection, you have to type "fastboot devices". "adb devices" doesn't work here.
But the unlock command should have worked anyway. How did you boot into fastmode? Can you see this fastboot screen?
If not, the easiest way to get to fastboot is to connect the turned off phone to the PC while keeping the volume down button pressed, until you see the screen linked above.
But if you do see the fastboot screen, and still don't get anything from "fastboot devices", I'd try Google's official adb/fastboot tools.
xxera said:
...you have to type "fastboot devices".
Click to expand...
Click to collapse
Yes! I can see the device listed now! I had no idea that you had to type that command! Wow....years later of working with phones and I am still learning. :good: I guess I didn't progress because I mistakenly thought the device was not being found.
I ran both commands fastboot flashing unlock and fastboot flashing unlock_critical successfully.
Once the phone wiped itself and booted up (without progressing from the startup screen prompts), I shut it down then went back in to fastboot mode and successfully ran the flashall.bat command.
I shut it down and restarted it. Touchscreen is still not working. :crying:
When I finally get this working...would I just run the commands fastboot flashing lock and fastboot flashing lock_critical to relock the phone...? I need Google Pay and other banking apps to work so want the phone to be secure.
There is always more to learn
Shame that it didn't work, though :/ Did you flash the image from September 2018 that I linked, or the newest build? If you directly flashed the newest one, maybe try the 2018 build, since that worked for me. Alternatively, from the same reddit post I linked before, someone got it working by flashing the August 2018 build, and sideloading the September 2018 OTA Update after. But I never did this sideloading thing, so can't help much there. All builds and OTAs are available on this neat website by the way.
Regarding relocking, it is generally advised to only relock if you have a good reason to do it. You can only relock a completely unmodified stock image, otherwise your phone won't boot, so no root, magisk or anything.
My banking apps still work on my unlocked and rooted phone, but I'm using a Pixel 3, and not sure about Google Pay.
But yes, if you want to relock, make absolutely sure you're stock, and use the commands you mentioned. Just be aware that this also wipes the phone again.
xxera said:
Shame that it didn't work, though :/ Did you flash the image from September 2018 that I linked
Click to expand...
Click to collapse
Yes, I used the link you gave me for the Sep 2018 build.
I will try the Aug 2018 build and see if I get any joy with that.
Thank you so much for your patience and help!
Just to be clear, you should sideload the September OTA after that, the August build itself won't do much as far as I understood.
Glad to help, I just had the same hunt for clues behind me, I know how frustrating it can be
I tried the Aug 2018 build then sideload flashing the Sep 2018 build. No joy...touchscreen still not working.
The whole fastboot flashing worked except for this one error:
fastboot format userdata
CreateProcess failed: The system cannot find the file specified. (2)
fastboot: error: Cannot generate image for userdata
This message came up once the flash was complete and the phone rebooted itself):
Android Recovery
essential/mata/mata
9/PPR1.180610.091/249
user/release-keys
Use volume up/down and power.
Can't load Android system. Your data may be corrupt. If you continue to get this message, you may need to perform a factory data reset and erase all user data stored on this device.
--------------------------------------------------
Try again
Factory data reset
--------------------------------------------------
There was no choice to Apply update from ADB so I can sideload the Sep 2018 update so I went ahead and chose Factory data reset.
Once it factory reset, I was able to go in to recovery and sideload the Sep 2018 update.
Have I missed anything in this procedure...?
I also tried fastboot flashing the Apr 2019 build but that hasn't helped either.
(Attached is a screenshot of the two files I downloaded. The links are the purple ones I chose). Did I get the correct ones?
The files look right to me.
After some research I found that updating the adb tools worked for some people with that error. The creator of the 15 Seconds ADB installer even edited the post and said the tool is outdated by now. There's a newer version in this post, and maybe you are already using that, but I'd strongly recommend the official ADB from google, since I never had a problem with that one.
Also, I read that you should use a USB-3 cable. The official one from essential itself is USB-2 which can cause some problems in flashing sometimes (which is pretty stupid tbh).
Yes, after you updated ADB/fastboot, I'd just try the Aug image + Sept OTA again. Or directly the Sept image.
Not sure about the factory reset message, I'd say yes again just in case.
Edit: Ah, since it says "can't load android system", I guess the flashing failed.
I managed to fix phones with flashing a second time exactly the same way many times, sometimes fastboot is just moody. But may updating ADB can help here.
I updated fastboot and adb from the Google site.
Reflashed Aug and Sep 2018 files.
No joy. Touchscreen still doesn't respond.
An idea...I tried to install TWRP to see if the touchscreen is actually working but get the error fastboot: error: Couldn't parse partition size '0x' when running the command to install the TWRP Mata recovery image file.
Any way to check if the screen/digitizer is not a hardware fault?
Weird error... Can you post the whole log? If the partition size was read as 0, something went wrong with identifying the partition (if I interpret the error message correctly). Did you correctly flash to boot_a/boot_b depending on which one is active?
But TWRP might not help diagnosing the issue, I think touch stopped working in TWRP for essential phone a while ago, because it is also very outdated...
But to me it sounds like the usual problem after updating that many people had. The screen stopped working after an update, right?
Also, did you make sure to use the new platform-tools fastboot? Google's version doesn't automatically install itself system-wide, so if you just type "fastboot" in the command line, that might still be the old "15 Seconds ABD installer" fastboot. You can type "adb --version"to find out, it tells you in which folder the adb.exe file is.

Categories

Resources