adb not working - Xperia Z5 Compact Q&A, Help & Troubleshooting

guys I cant seem to get adb to work when i wanna flash boot or recovery stuff...
funny how flash tool recognizes the phone and i can install any ftf but i dont know why this is happening its so weird for adb not to work for no good reason...
please i need help why isnt my phone recognized by adb when connected in fastboot mode?

Related

[Q] LG optimus c stuck in fastboot mode PLEASE HELP

i tried to flash a recovery and it didnt work and the phone is stuck in fastboot mode
use this
BUT, before you even do a thing, know that you have to use the files that are meant for your phone (you need the recovery and usb drivers meant for your phone; i believe you can use the other files)
sweetnsour said:
use this
BUT, before you even do a thing, know that you have to use the files that are meant for your phone (you need the recovery and usb drivers meant for your phone; i believe you can use the other files)
Click to expand...
Click to collapse
My phone can't get to emergency mode and stuck in fastboot mode i have rooted my phone and backed up rom rebooted phone and went straight to fastboot mode what do i do
lg optimus c
Yes the tut didn't work for my phone. for some reason its not being recognized by the fastboot shell nor adb shell. I'd assume its completely bricked ? thanks for all the help.
My phone was not recognized by neither fastboot nor adb while in fastboot mode. "adb devices" and "fastboot devices" generated no result. Nevertheless, the following command worked flawlessly
fastboot flash recovery recovery.img
So, it seems that it's not necessary for the phone to show up in adb or fastboot.

Fastboot help

My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode. I get a blank space in return. Can anyone help me with this? ADB works fine, it's only Fastboot. Is there a Fastboot driver that I might be missing?
Thank you.
Edit: I'm trying to unlock the bootloader of my phone.
Me too !
Drivers are here: https://developer.android.com/studio/run/win-usb
These are the ones I use for ADB/Fastboot.
May I ask if anybody solved this already?
Having the same issue, tried various drivers, but fastboot won't find my phone
Help is highly apperciated!
Clock
If you using windows 10 have you disable the drivers signature verification.. And search on here (XDA) for Min ADB & Fastboot tools, easier than using SDK tools unless you modding apks ect..
Okay, I got this working.
When in fastboot mode, you have to go to the device manager, update driver, and manually choose the google fastboot driver. Then the ! is gone and it works.
Fastboot drivers for Xperia XZ1
Redcalibur said:
My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode.
Click to expand...
Click to collapse
I add a hint to the solution that is working for me (Windows 7, 64 bit): https://forum.xda-developers.com/showpost.php?p=79221714&postcount=44
Redcalibur said:
My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode. I get a blank space in return. Can anyone help me with this? ADB works fine, it's only Fastboot. Is there a Fastboot driver that I might be missing?
Thank you.
Edit: I'm trying to unlock the bootloader of my phone.
when u connect phone to pc choose no data transfer then open cmd and write: adb reboot fastboot
Click to expand...
Click to collapse

ADB unauthorized when phone shutted off

Hello,
I have specific problem.
I was on the stock rom 10.3.6... with root and twrp installed. So I wanted to update to Miui 11 and I uninstall Magisk and done the update through the twrp.
So, in order to back magisk I wanna to go to twrp via fastboot and PC. But I am constantly getting message "ADB devices unauthorized". Anyway... this is only happening when phone is shutted off(in order to go to fastboot mode). When phone is turned on everything is fine and I can se device via adb command prompt. I tried any written solution on internet but nothing could solve the problem. When I connect turned on phone I regularly get the question to authorize phone and I click ok. And while phone is turned on everything is fine and I have accsess to internal and external memory of phone.
Is there any possible solution to solve this stuck ? Is there some other way to boot into twrp besides fastboot ? For now I would skip installing magisk via stock recovery or without twrp access.
Thanks infront !
This is how its susposed to work. Device should be online when turned on, and not when off. This is first time i heard someone try to connect device wiht adb via fastboot.
EugenStanis said:
This is how its susposed to work. Device should be online when turned on, and not when off. This is first time i heard someone try to connect device wiht adb via fastboot.
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Click to collapse
Thank you for reply.
I think that the reguar way for boot into twrp via pc is that your phone is turned off. Than you connect with pc and start adb commands. I dont understand, really.
Ok, how can I boot into twrp without pc if dfe is not flashed ?
visinacgile said:
Thank you for reply.
I think that the reguar way for boot into twrp via pc is that your phone is turned off. Than you connect with pc and start adb commands. I dont understand, really.
Ok, how can I boot into twrp without pc if dfe is not flashed ?
Click to expand...
Click to collapse
You use fastboot instead of adb commands when phone is off. Put your phone in fastboot mode and type commands like fastboot boot (drop your twrp image here) and hit enter
EugenStanis said:
You use fastboot instead of adb commands when phone is off. Put your phone in fastboot mode and type commands like fastboot boot (drop your twrp image here) and hit enter
Click to expand...
Click to collapse
Yes. My mistake... huge. Thank you. I forget tottaly.
Should I delete this thread ?
visinacgile said:
Yes. My mistake... huge. Thank you. I forget tottaly.
Should I delete this thread ?
Click to expand...
Click to collapse
No problem. Leave it like it is for other users :highfive:

Mi A3 bricked! Please help!!!

Please help me. My computer doesn't recognize Mi A3 while on Fastboot mode. I connect the phone to computer but whenever I run adb device in command prompt and it's not showing my device. Please help me! ?
Barbiox Dogg said:
Please help me. My computer doesn't recognize Mi A3 while on Fastboot mode. I connect the phone to computer but whenever I run adb device in command prompt and it's not showing my device. Please help me!
Click to expand...
Click to collapse
For fastboot you must use "fastboot devices". ADB and fastboot modes are completely different, learn more about them for example here https://www.makeuseof.com/tag/use-adb-fastboot-android/
I got it to work. I used another computer. I think I am having issues with ADB drivers on my computer. I will see what I can do.
Barbiox Dogg said:
I got it to work. I used another computer. I think I am having issues with ADB drivers on my computer. I will see what I can do.
Click to expand...
Click to collapse
First of all, you'll need to learn the difference between ADB and fastboot (they also use different drivers). If you follow one of many guides, you should be able to get it working in a few minutes. [emoji846]
Quick reminder:
ADB - used when phone's fully running
Fastboot - phone in a special mode ("turned off"), ready for flashing

fastboot doesn´t work on windows pc out of the blue

What has happend with fastboot? I have a rooted phone with twrp 3.3.1.0.
I have used fastboot commands to flash boot.img and recovery.img for years.
Suddenly out of the blue i can´t connect with the phone in fastboot mode. I have tried everything, all kind of different windows drivers, emma, flashtool, drivers from sony, latest driver form google. but i cant get my phone to show up as a device in fastboot mode using fastboot commands. Are there something that has changed lately?
I can connect in flash mode and adb commands works normal.
Usb debugging are on, and I have tried to boot pc without driver signature check.
I have read topics for several days googling and I simply cant get it to work in fastboot.
Please help.
https://android.stackexchange.com/questions/129174/windows-10-fastboot-driver
pergoteborg said:
https://android.stackexchange.com/questions/129174/windows-10-fastboot-driver
Click to expand...
Click to collapse
Works like a charme..... Thanks:good:

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