t817v isn't recognized by pc in fastboot mode - Galaxy Tab S2 Q&A, Help & Troubleshooting

I have the t817v and I'd like to root it, but I can't get the device to be seen by my computer in fastboot mode. I tried Linux and Windows with the updated drivers from the website. I tried Odin and it also couldn't see anything. The regular usb connection while the tablet's on works fine. With different tablets in fastboot mode and in Windows, sometimes I'll see an unknown device in the list of connected devices, but that isn't happening either.
Any tips on getting the device to appear while in fastboot mode?
-Thanks
Todd

I'm able to answer my own question now- I had been holding volume down and power to get into "Boot mode" but I actually should have held volume down + Home + Power to get into "Odin mode." Now Odin can see it.

There is no Fastboot mode.

ashyx said:
There is no Fastboot mode.
Click to expand...
Click to collapse
I believe he's talking about fastboot with sdk.
And for 5.0.x you must have API 22 and 23 for 5.1.x

phil_man said:
I believe he's talking about fastboot with sdk.
And for 5.0.x you must have API 22 and 23 for 5.1.x
Click to expand...
Click to collapse
Like I said there is no Fastboot mode, so it's useless.
Android 5.0 API 21
Android 5.1 API 22
Android 6.0 API 23

tbsmith said:
I have the t817v and I'd like to root it, but I can't get the device to be seen by my computer in fastboot mode. I tried Linux and Windows with the updated drivers from the website. I tried Odin and it also couldn't see anything. The regular usb connection while the tablet's on works fine. With different tablets in fastboot mode and in Windows, sometimes I'll see an unknown device in the list of connected devices, but that isn't happening either.
Any tips on getting the device to appear while in fastboot mode?
-Thanks
Todd
Click to expand...
Click to collapse
so were you able to root the tablet? im planning on buying the tab s2 from verizon but dont know if its rootable or not

xuanphucn said:
so were you able to root the tablet? im planning on buying the tab s2 from verizon but dont know if its rootable or not
Click to expand...
Click to collapse
It's not.

Related

How to upgrade to 5.1.1 when rooting is available?

When I connect my device in recovery (power and volume down) mode, and select side load, my device doesn't show up in my "adb devices". And Device Manager only shows "KOFWII". When Fire OS Is running, my computer sees the device normally. Any help?
Adb Drivers
Did you install the adb drivers?
See http://forum.xda-developers.com/showthread.php?t=3236187 for instructions on drivers and getting adb to recognize your device.
When I do that, my computer doesn't recognize the tablet unless it's in FireOS
Sent from my KFFOWI using Tapatalk
does "fastboot devices" show anything?
AntDeek said:
When I do that, my computer doesn't recognize the tablet unless it's in FireOS
Sent from my KFFOWI using Tapatalk
Click to expand...
Click to collapse
Have you tried booting different recoveries to see if it is an issue with the one you are using? Development is still young for this device and most things will still have the occasional bug, even the recoveries.
How do I enable it?
Fastboot devices doesn't show anything when I'm in the "hold volume and power" mode, however my tablet shows up as KFFOWI in device manager. While in FIREOS, my adb devices works
AntDeek said:
When I connect my device in recovery (power and volume down) mode, and select side load, my device doesn't show up in my "adb devices". And Device Manager only shows "KOFWII". When Fire OS Is running, my computer sees the device normally. Any help?
Click to expand...
Click to collapse
While in sideload mode, install the drivers for KOFWII just as you did for "OS" mode.
DoLooper said:
While in sideload mode, install the drivers for KOFWII just as you did for "OS" mode.
Click to expand...
Click to collapse
All I did was use the installer from amazon's website, do I run the sAme installer in side load mode?
Well, the drivers are on your system somewhere. Try this guide, right-clicking KOFWII instead of KFARWI: http://forum.xda-developers.com/showpost.php?p=62561874&postcount=2

Stuck at loading screen when booting

I found out this morning that my phone had cut off during the night. When I tried to turn the phone back up it just stayed at the loading screen and does not go any further than that. I can get into Fastboot/recovery but not sure what is going on. Phone is locked as well.
I am running on Developer preview 5 and I assuming it has something to do with this. I have read up on others having issues and talk about sideloading the OTA that has resolved the issue but my computer does not even detect the device, so adb does not see the device. Feel like if I can just get my computer to detect my phone I'll be in business.
Really need some help on this one as it is starting to look like I am going to have a nice paper weight the rate its going. Thank you in advance.
cjsill9473 said:
I found out this morning that my phone had cut off during the night. When I tried to turn the phone back up it just stayed at the loading screen and does not go any further than that. I can get into Fastboot/recovery but not sure what is going on. Phone is locked as well.
I am running on Developer preview 5 and I assuming it has something to do with this. I have read up on others having issues and talk about sideloading the OTA that has resolved the issue but my computer does not even detect the device, so adb does not see the device. Feel like if I can just get my computer to detect my phone I'll be in business.
Really need some help on this one as it is starting to look like I am going to have a nice paper weight the rate its going. Thank you in advance.
Click to expand...
Click to collapse
If I understand correctly, you can get to fastboot mode. If you then plug in the usb cable, and type fastboot devices, does the computer recognize it?
Have you ever connected to the phone using your computer and either adb or fastboot? In other words, is there a high level of confidence that the drivers are setup on your computer?
That is correct, I am able to get into fastboot mode, the phone will detect a USB cable "will say transfer mode: USB connected" but when I am in command prompt on my computer and type in "adb devices" it finds nothing.
I've had experience with using adb/fastboot on my moto x 2014 but this is the first time doing this on my nexus and I am pretty sure I had never hooked up my nexus to this computer before this issue happened. So I wouldn't be surprised if it is a driver issue but I have downloaded Android sdk and gone into sdk manager to have it install google drivers. I just now now played around with Nexus Root toolkit to assist in installing drivers with the same results. I had used the tool to uninstall any drivers that could have impacted this and reinstalled with no luck.
ktmom said:
If I understand correctly, you can get to fastboot mode. If you then plug in the usb cable, and type fastboot devices, does the computer recognize it?
Have you ever connected to the phone using your computer and either adb or fastboot? In other words, is there a high level of confidence that the drivers are setup on your computer?
Click to expand...
Click to collapse
cjsill9473 said:
That is correct, I am able to get into fastboot mode, the phone will detect a USB cable "will say transfer mode: USB connected" but when I am in command prompt on my computer and type in "adb devices" it finds nothing.
I've had experience with using adb/fastboot on my moto x 2014 but this is the first time doing this on my nexus and I am pretty sure I had never hooked up my nexus to this computer before this issue happened. So I wouldn't be surprised if it is a driver issue but I have downloaded Android sdk and gone into sdk manager to have it install google drivers. I just now now played around with Nexus Root toolkit to assist in installing drivers with the same results. I had used the tool to uninstall any drivers that could have impacted this and reinstalled with no luck.
Click to expand...
Click to collapse
Do you have an otg cable? Does that work?
I do but I don't have one on me currently. I am currently at work but will be home in about 2 hours.
ktmom said:
Do you have an otg cable? Does that work?
Click to expand...
Click to collapse
cjsill9473 said:
That is correct, I am able to get into fastboot mode, the phone will detect a USB cable "will say transfer mode: USB connected" but when I am in command prompt on my computer and type in "adb devices" it finds nothing.
Click to expand...
Click to collapse
When you are in fastboot mode, and connect to your computer, you should run "fastboot devices", instead of "adb devices".
You are correct, device does show up when type in fastboot devices. Guess that is what I get when trying to do this while I am at work and haven't messed with this type of stuff in months. I really appreciate the fast response on this and my derp moment. Now to try and side load the OTA to see if I can bring my phone back to life. Looks like I just need to go into custom recovery and select "Apply Update from ADB" and hopefully I'll be in business.
jj14 said:
When you are in fastboot mode, and connect to your computer, you should run "fastboot devices", instead of "adb devices".
Click to expand...
Click to collapse
Well at this point I was able to side load the OTA DP5 build and its doing the same thing. Trying a factory reset now to see if that will make a difference but if not looks like I am going to have to go out and get me a new phone till I can get this one fixed or RMA'ed. Just stuck at the loading animation.
Edit: Factory restore finally brought it back to life. Thank you again for the quick help and assistance on this!

Can't flash TWRP

Hi. I decided to flash my Honor 3c with Cyanogenmod 12.1. My problem is that i need TWRP (now I have CWM) but i can't flash it to my device. I try to do it by SP Flash Tool, but after i connect my turned off device, I get this error:
BROM ERROR : S_BROM_DOWNLOAD_DA_FAIL (0x7D4)
[H/W] Fail to download DA to baseband chip's internal SRAM!
[HINT]: 1. There's an cable communication problem between FlashTool and BootROM. 2. Target might be shutdown unexpectedly or target lost power supply.
[ACTION] 1. Try again. 2. Proceed H/W checking in download cable and target side com port. 3. Monitor if power-drop occured in target side.
Click to expand...
Click to collapse
Where is the problem? I've tried with 2 different cables and 2 different computers
Ceranzuo said:
Hi. I decided to flash my Honor 3c with Cyanogenmod 12.1. My problem is that i need TWRP (now I have CWM) but i can't flash it to my device. I try to do it by SP Flash Tool, but after i connect my turned off device, I get this error:
BROM ERROR : S_BROM_DOWNLOAD_DA_FAIL (0x7D4)
[H/W] Fail to download DA to baseband chip's internal SRAM!
[HINT]: 1. There's an cable communication problem between FlashTool and BootROM. 2. Target might be shutdown unexpectedly or target lost power supply.
[ACTION] 1. Try again. 2. Proceed H/W checking in download cable and target side com port. 3. Monitor if power-drop occured in target side.
Where is the problem? I've tried with 2 different cables and 2 different computers
Click to expand...
Click to collapse
Is your phone in bootloader mode? Hold Vol down+power to enter fastboot mode and then connect your phone to PC.
If you are already doing that or the problem still persists and have an unlocked bootloader(which I am sure you have), try to flash twrp manually.
muradulislam said:
Is your phone in bootloader mode? Hold Vol down+power to enter fastboot mode and then connect your phone to PC.
Click to expand...
Click to collapse
When I do it, my phone just turns on normally.
How can I check if I have unlocked bootloader? I have unlocked it about 1 year ago, but I did full wipe yesterday.
Ceranzuo said:
When I do it, my phone just turns on normally.
How can I check if I have unlocked bootloader? I have unlocked it about 1 year ago, but I did full wipe yesterday.
Click to expand...
Click to collapse
Vol down+power should boot into fastboot. Turn off the phone, hold both until honor logo shows up, let go of power but hold vol down for about 5 sec more.
If still the same, Turn off your phone, connect USB cable to phone, hold Vol down and connect the cable to computer. It should boot into bootloader now.
If it can not boot into bootloader still, the last is to try adb but that is a bit lengthy.
In bootloader mode, it will be written on phone screen in red whether phone is locked, unlocked or relocked.
Wipe does not effect bootloader status so it's still unlocked imo.
muradulislam said:
If still the same, Turn off your phone, connect USB cable to phone, hold Vol down and connect the cable to computer. It should boot into bootloader now.
Click to expand...
Click to collapse
After this, I got this text on my screen:
FASTBOOT&RESCUE MODE
Please connect usb cable to your computer and open hisuite
Click to expand...
Click to collapse
Ceranzuo said:
After this, I got this text on my screen:
FASTBOOT&RESCUE MODE
Please connect usb cable to your computer and open hisuite
Click to expand...
Click to collapse
It did not say anything about phone unlocked in red?
muradulislam said:
It did not say anything about phone unlocked in red?
Click to expand...
Click to collapse
Nope. Maybe I was wrong and I have never unlocked it? I don't remember, but I did something when I was upgrading my phone to Android 4.4.2
Ceranzuo said:
Nope. Maybe I was wrong and I have never unlocked it? I don't remember, but I did something when I was upgrading my phone to Android 4.4.2
Click to expand...
Click to collapse
At least it should say, phone locked. Saying nothing is a phenomenon i never heard before but I usually go for newer versions. May be that's the case.
Anyways use adb to fire this command
Fastboot OEM device-info
To be sure if its locked or not.
To setup adb, download and install latest Android SDK, run the program and only download platform-tools.
Your phone is international variant and it came with locked bootloader, I am sure sp tools unlocked it coz otherwise CWM could not be flashed.
Right click platform-tools folder and select run command prompt window here and type the above command
If the bootloader is unlocked (it will tell you if it is), copy the twrp image to platform-tools folder and rename it to twrp.img and fire this command
Fastboot flash recovery twrp.img
And try to reboot into recovery after disconnecting from pc and simultaneously holding power+ Vol up.
edit: nevermind, i forghot about something...
muradulislam said:
If the bootloader is unlocked (it will tell you if it is), copy the twrp image to platform-tools folder and rename it to twrp.img and fire this command
Fastboot flash recovery twrp.img
Click to expand...
Click to collapse
Should I do this when my phone is switched off?
Ceranzuo said:
Should I do this when my phone is connected to pc or not? Switched off?
Click to expand...
Click to collapse
When your phone is connected to your pc in fastboot mode.
Lemme know how did it go, will reply back in the morning. Hope everything works fine for you.
Sent from my PLK-L01 using XDA Labs
muradulislam said:
When your phone is connected to your pc in fastboot mode.
Sent from my PLK-L01 using XDA Labs
Click to expand...
Click to collapse
Ok, after I typed this command, there appeared this message in window:
<waiting for any device>
Click to expand...
Click to collapse
after this I reboot into recovery mode, but there is still CWM, not TWRP
Ceranzuo said:
Ok, after I typed this command, there appeared this message in window:
<waiting for any device>
after this I reboot into recovery mode, but there is still CWM, not TWRP
Click to expand...
Click to collapse
You dont have your phone drivers installed. Google Huawei USB drivers and install them or use hisuite to install drivers for your phone.
After driver installation, do the same process again.
My bad. I assumed you would have drivers already installed
Sent from my PLK-L01 using XDA Labs
muradulislam said:
You dont have your phone drivers installed. Google Huawei USB drivers and install them or use hisuite to install drivers for your phone.
After driver installation, do the same process again.
My bad. I assumed you would have drivers already installed
Sent from my PLK-L01 using XDA Labs
Click to expand...
Click to collapse
I have already installed many drivers from different sites. I will try with hisuite
Ceranzuo said:
I have already installed many drivers from different sites. I will try with hisuite
Click to expand...
Click to collapse
Hisuite is the best option. Even if that does not work (there is a chance of that), Google Kouch's universal drivers and install those.
May have to manually install dribers if nothing works.
Lemme know how did it go. Will get back to you in the morning if nobody else came along (but someone surely will before that).
Have a nice day/night depending on your time zone
Sent from my PLK-L01 using XDA Labs
---------- Post added at 07:41 PM ---------- Previous post was at 07:31 PM ----------
Lemme get my teacher for you
@DigiGoon
Sent from my PLK-L01 using XDA Labs
I installed Hisuite and connected my phone. Windows have downloaded drivers automatically. And still the same...
But I forgot to tell you that when I connecting my switched off phone, my pc says "USB Device Not Recognized" (or something like that, I dont have english version of windows). Everything is ok when my phone is switched on...
This phone is cursed. I try to give up and stay on my current ROM, so I installed Nova Launcher, but setting it as default doesn't work :/
Thanks for trying to help me anyway.
Ceranzuo said:
I installed Hisuite and connected my phone. Windows have downloaded drivers automatically. And still the same...
But I forgot to tell you that when I connecting my switched off phone, my pc says "USB Device Not Recognized" (or something like that, I dont have english version of windows). Everything is ok when my phone is switched on...
This phone is cursed. I try to give up and stay on my current ROM, so I installed Nova Launcher, but setting it as default doesn't work :/
Thanks for trying to help me anyway.
Click to expand...
Click to collapse
I was awake just for your post. I think I got the problem. You need fastboot drivers imo but I would have to read a bit before I can suggest how to go about it.
Am busy tomorrow but will try to get back to you in the evening (GMT+5 time zone).
Can never be 100% sure but still I am confident, your problem has a solution. Just bear with me a day or two
Sent from my PLK-L01 using XDA Labs
Ceranzuo said:
I installed Hisuite and connected my phone. Windows have downloaded drivers automatically. And still the same...
But I forgot to tell you that when I connecting my switched off phone, my pc says "USB Device Not Recognized" (or something like that, I dont have english version of windows). Everything is ok when my phone is switched on...
This phone is cursed. I try to give up and stay on my current ROM, so I installed Nova Launcher, but setting it as default doesn't work :/
Thanks for trying to help me anyway.
Click to expand...
Click to collapse
Boot into recovery mode, no matter on which recovery are you on, and execute this command:
Code:
adb devices
And see the output, if it says something like:
Code:
**some_number** recovery
then it means there is no problem in the detection of your device by PC, if it does not, then check if the micro USB socket in the device is in good condition.
And I must ask: Are you able to do any operations on device via PC after connecting it?
DigiGoon said:
Boot into recovery mode, no matter on which recovery are you on, and execute this command:
Code:
adb devices
And see the output, if it says something like:
Code:
**some_number** recovery
then it means there is no problem in the detection of your device by PC, if it does not, then check if the micro USB socket in the device is in good condition.
Click to expand...
Click to collapse
I did it and it says some number and recovery
DigiGoon said:
And I must ask: Are you able to do any operations on device via PC after connecting it?
Click to expand...
Click to collapse
In "usb storage media" or something like that? Yes, I do.
Ceranzuo said:
I did it and it says some number and recovery
Click to expand...
Click to collapse
Okay, then it means that there is no problem in the connection. You are using SP Flash tool in which mode?
Sent from my PLK-L01 using Tapatalk

Device won't be detected in fastboot mode

My device is H811 running 10N version (rooted), but I'm unable to update it using because it won't be detected once it goes into fastboot or download mode. I have tried many drivers, and different PCs (running different OS, Windows 10, 8.1, 7) but still can't get it to works. Is there something I'm missing?
zenkhas said:
My device is H811 running 10N version (rooted), but I'm unable to update it using because it won't be detected once it goes into fastboot or download mode. I have tried many drivers, and different PCs (running different OS, Windows 10, 8.1, 7) but still can't get it to works. Is there something I'm missing?
Click to expand...
Click to collapse
first of all. update what.??
raptorddd said:
first of all. update what.??
Click to expand...
Click to collapse
I want to update it to Marshmalllow 20i or later.
zenkhas said:
I want to update it to Marshmalllow 20i or later.
Click to expand...
Click to collapse
have you tried lgbridge..
i doesnt detect phone at all.?
you have both of this drivers http://www.mediafire.com/file/k6ozyesitcqbkdr/driverslg.zip
usb 2.0 ? if nothing else works .. i can only think of format pc.. install drivers.. have windows update on in case it doesnt find drivers.. wait for it to install all drivers first time you connect phone.. or maybe bad usb port in phone .??
raptorddd said:
have you tried lgbridge..
i doesnt detect phone at all.?
you have both of this drivers http://www.mediafire.com/file/k6ozyesitcqbkdr/driverslg.zip
usb 2.0 ? if nothing else works .. i can only think of format pc.. install drivers.. have windows update on in case it doesnt find drivers.. wait for it to install all drivers first time you connect phone.. or maybe bad usb port in phone .??
Click to expand...
Click to collapse
No it doesn't. LG Up detects it when phone is On, but when LG Up restarts the device in fastboot, it says no devices connected, even when drivers are installed. Yes, the USB port is 2.0, and it can't be problem with port of phone since it is detected in normal mode. I will try these drivers and let you know if it works. Thank you
zenkhas said:
No it doesn't. LG Up detects it when phone is On, but when LG Up restarts the device in fastboot, it says no devices connected, even when drivers are installed. Yes, the USB port is 2.0, and it can't be problem with port of phone since it is detected in normal mode. I will try these drivers and let you know if it works. Thank you
Click to expand...
Click to collapse
LGUP and fastboot.??? what you talking about.?
turn off phone. then press vol up and plug you usb cable. it should take you to download mode and open LGUP it takes a while for connection sbut less then a minute..
raptorddd said:
LGUP and fastboot.??? what you talking about.?
turn off phone. then press vol up and plug you usb cable. it should take you to download mode and open LGUP it takes a while for connection sbut less then a minute..
Click to expand...
Click to collapse
Okay, that's the problem actually. I was confused between fastboot and download mode. When I press volume up and connect the cable it boots into fastboot mode instead of download mode. What could be the problem?
BTW here is the log from fastboot mode:
usb_error();transaction failed.txn_status = -1
usb_read(); DONE. ERROR. len 64
SECURE BOOT: DISABLED
LOCK STATE: LOCKED
zenkhas said:
Okay, that's the problem actually. I was confused between fastboot and download mode. When I press volume up and connect the cable it boots into fastboot mode instead of download mode. What could be the problem?
BTW here is the log from fastboot mode:
usb_error();transaction failed.txn_status = -1
usb_read(); DONE. ERROR. len 64
SECURE BOOT: DISABLED
LOCK STATE: LOCKED
Click to expand...
Click to collapse
am not good at readings of finding error i just suggestion why i think it might be..
can you do a factory reset.? can you try again to go into download mode.. maybe use an app that has download mode recovery mode one click on phone to take you there.?
its weird .. something not right when vol up and connect usb.. doenload mode should pop up. with screen showing usb icon.
I had the same exact problem for 6 hrs yesterday and i came across your thread and the problem is when you do adb reboot bootloader, and your phone doesn't show up on your pc under 'Computer management > devices', the driver says unsupported, follow this video starting around 4:50, you'll find all the drivers that way and it'll work right away
nkia2sg said:
I had the same exact problem for 6 hrs yesterday and i came across your thread and the problem is when you do adb reboot bootloader, and your phone doesn't show up on your pc under 'Computer management > devices', the driver says unsupported, follow this video starting around 4:50, you'll find all the drivers that way and it'll work right away
Click to expand...
Click to collapse
What video?

Question Phone in fastboot mode not recognised

Since I flashed my Mi 11 ultra from CN to EEA version Rom, it is not recognised by Windows 10 laptop when in fastboot mode.
Its the same Win 10 laptop which I used to flash the phone, so all the drivers are still installed.
You have to turn USB Debugging on again in developer settings
Done that. I've done everything. It just doesn't get recognised. No little chime when I plug it in, nothing. It works in normal mode, but not fastboot.
message me privately and i can help you through zoom/teamviewer
saisannihith said:
message me privately and i can help you through zoom/teamviewer
Click to expand...
Click to collapse
there is a hardware fault on my phone. usb debugging is enabled. when in plug in phone in fastboot mode, it doesn't even show in device manager. nothing. this screenshot is taken with the phone plugged in in fastboot mode. As you can see, it doesn't show at all.
spikemann007 said:
there is a hardware fault on my phone. usb debugging is enabled. when in plug in phone in fastboot mode, it doesn't even show in device manager. nothing. this screenshot is taken with the phone plugged in in fastboot mode. As you can see, it doesn't show at all.
Click to expand...
Click to collapse
I cant tell you anything until i see it.
Weird, I attached a screenshot before. Here I try again.
put cellphone in fastboot download and install file here's download link https://ufile.io/1xc7dudc
thephonetechdoc said:
put cellphone in fastboot download and install file here's download link https://ufile.io/1xc7dudc
Click to expand...
Click to collapse
I already installed that same file before. No difference. doesn't even show in devive manager. I give up.
Bro not like this. Iam asking if i can connect remotely to your PC to diagnose the drivers.
Unusual xiaomi drivers and adb devices and reinstall
Have a look and try out the method mentioned in the video. Did the trick for me
I did all of it. I don't even get that little chime that lets you know when you plug the phone in. Silence.
It works fine in normal mode.
Hi @spikemann007 !
I had the same issue.
Root cause was (for me) the USB cable. Have you already tried a alternative?
best regards!

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