Lost ADB connection after flashing recovery image - Shield Tablet Q&A, Help & Troubleshooting

I was in the middle of unlocking the bootloader for my tablet and just finished flashing the recovery image and i have seem to lost my adb connection. I was about to sideload supersu.zip and i can no longer get my tablet to be seen in my adb window by any commands, But it can be seen in my device manager. I also cannot seem to boot into recovery mode either. Can anybody help with my problem and thank you for your time.

blake1886 said:
I was in the middle of unlocking the bootloader for my tablet and just finished flashing the recovery image and i have seem to lost my adb connection. I was about to sideload supersu.zip and i can no longer get my tablet to be seen in my adb window by any commands, But it can be seen in my device manager. I also cannot seem to boot into recovery mode either. Can anybody help with my problem and thank you for your time.
Click to expand...
Click to collapse
The same thing happened to me (lost ADB connection) but worse - it happened while I was updating the system partition. I just posted a request for help and seeing how you got no response, I expect I won't get any help, either. I think my device is probably hosed now. Shame.

Related

[Q] Nexus S not working...

I'm going to probably get a lot of hate for this because there are a ton of forums that might get me here. I did search for about 3 hours tonight and discovered some things but am still confused. I hope someone can help this be more simple. So a friend has a Nexus S that isn't working (I have a Nexus S by the by too). It's unlocked but no ClockWork on it. I can press volume up and power to get to fastboot mode. When I click on "reboot," the phone will just loop on the Google logo. If I click recovery, it starts to boot then shows the triangle with the exclamation mark. From there, I can press power and up or down on volume to get the blue screen which says reboot system now, apply update, wipe, wipe. You get it. I'm stuck...I can also turn off the phone, hold volume up/down and plug in the usb to get to "downloading..."
I want to get this phone working and back to stock. I have the SDK Manager (my phone isn't rooted so I use it to take screenshots) and pda net (which I still don't understand why or how to use with this) and two versions of Odin. It seems like Odin can get this working but I can't get it to work or find a clear guide on how to use it and which ones to use. This is a Tmob Nexus S, I think the i9020. Any help would be so greatly appreciated and I will give you all the credit. Oh, and i can pull up the device on ddms with the sdk manager and can explore the files but there is nothing. I can't find a way to drag a file on the phone to "apply update from /sdcard." Sorry again and thanks again!
callison.168 said:
I'm going to probably get a lot of hate for this because there are a ton of forums that might get me here. I did search for about 3 hours tonight and discovered some things but am still confused. I hope someone can help this be more simple. So a friend has a Nexus S that isn't working (I have a Nexus S by the by too). It's unlocked but no ClockWork on it. I can press volume up and power to get to fastboot mode. When I click on "reboot," the phone will just loop on the Google logo. If I click recovery, it starts to boot then shows the triangle with the exclamation mark. From there, I can press power and up or down on volume to get the blue screen which says reboot system now, apply update, wipe, wipe. You get it. I'm stuck...I can also turn off the phone, hold volume up/down and plug in the usb to get to "downloading..."
I want to get this phone working and back to stock. I have the SDK Manager (my phone isn't rooted so I use it to take screenshots) and pda net (which I still don't understand why or how to use with this) and two versions of Odin. It seems like Odin can get this working but I can't get it to work or find a clear guide on how to use it and which ones to use. This is a Tmob Nexus S, I think the i9020. Any help would be so greatly appreciated and I will give you all the credit. Oh, and i can pull up the device on ddms with the sdk manager and can explore the files but there is nothing. I can't find a way to drag a file on the phone to "apply update from /sdcard." Sorry again and thanks again!
Click to expand...
Click to collapse
It seems your boot.img file either corrupted or missing.
Find a working copy of file, flash it via ADB interface or fastboot. Flash recovery file CWM. If that doesnt work, Try flashing CM7 Rom or someother ROM.
Did you check http://forum.xda-developers.com/showthread.php?t=895545 ?
Odin should be your last resort, if nothing really works for you.
If you want to return to stock, simply flash the NAND backup found here: http://forum.xda-developers.com/showthread.php?t=884093 .
Disclaimer : I take no responsibility of what so ever happens to your phone, however you should be good if you follow proper steps.
Thanks so much for the quick reply. I think I've made some headway...I can "see" the device with cmd by typing adb devices. After that though, I don't understand how to get the stock nexus s rom on the phone. How do I move that file to my phone (what's the line of code I type)? I've tried "adb install <c:\grh78> but it says the syntax isn't correct. Any more help is so greatly appreciated and I appreciate the already prompt response. Thanks!!!
callison.168 said:
Thanks so much for the quick reply. I think I've made some headway...I can "see" the device with cmd by typing adb devices. After that though, I don't understand how to get the stock nexus s rom on the phone. How do I move that file to my phone (what's the line of code I type)? I've tried "adb install <c:\grh78> but it says the syntax isn't correct. Any more help is so greatly appreciated and I appreciate the already prompt response. Thanks!!!
Click to expand...
Click to collapse
Download your rom of choice (stock, custom)
Flash Cwm via fastboot if you haven't already
Boot into recovery.
Use adb push to push your zipped rom to the sdcard (adb push file.zip /sdcard/file.zip)
Use cwm to flash this zip.
Sent from my Nexus S using xda premium
callison.168 said:
Thanks so much for the quick reply. I think I've made some headway...I can "see" the device with cmd by typing adb devices. After that though, I don't understand how to get the stock nexus s rom on the phone. How do I move that file to my phone (what's the line of code I type)? I've tried "adb install <c:\grh78> but it says the syntax isn't correct. Any more help is so greatly appreciated and I appreciate the already prompt response. Thanks!!!
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=9866675
http://forum.xda-developers.com/showthread.php?t=884093
These threads should be a complete solution to your issue.
Disclaimer : I take no responsibility of what so ever happens to your phone, however you should be good if you follow proper steps.
Wow fast responses. I bet it's annoying to help yet another person having issues (again, phone was given to me like this but yeah...) while you guys or gals already know how to do these things very well. Here's where I'm stuck. I enter this code in cmd:
fastboot flash recovery recovery-clockwork-5.0.2.0-crespo.img
and it just says < waiting for device >.
Here's a pic of the screen that I'm on with my phone when i enter the command.
http://imgur.com/Pey3W
If I'm just in the first screen by holding volume up and power, the computer won't read the phone. So I click recovery, the screen shows it's trying to install something then the triangle exclamation mark, i press volume up/down with power and get this screen and the computer can "see" my phone on cmd.
How do I get this flipping clockwork on this phone or get the stock image on my sd card? Thanks again for helping me out guys. I have taken a look at the links you have sent me and that's where i found the download as well as the code to enter. I will keep looking at them but if you find a faster solution, please let me know.
One more thing to be super clear on...when I'm on the screen on the Nexus S that says Fastboot Mode on top in red and Lock State - Unlocked...my computer won't read the phone, therefore I cannot fastboot the recovery img...
callison.168 said:
One more thing to be super clear on...when I'm on the screen on the Nexus S that says Fastboot Mode on top in red and Lock State - Unlocked...my computer won't read the phone, therefore I cannot fastboot the recovery img...
Click to expand...
Click to collapse
So you already tried "fastboot devices" while in fastboot mode?
Edit: Actually it sounds you really want stock so download the complete stock OTA ROM (including boot.img etc.), rename it to update.zip and put it on the root of your sdcard. Boot into the stock recovery like you did already and hit apply update.
EDIT: Go here to download the correct OTA http://forum.xda-developers.com/showthread.php?t=1056062
Find the correct 2.3.6 "Full ROM" for your phone model. Sounds like in those instructions you don't need to rename to update.zip. Haven't seen stock recovery for a while so I don't remember.
If there is a wipe option in the stock recovery then do that first.
Yes I have tried fastboot devices in fastboot mode but nothing because my computer doesn't read the phone in that mode. And yes, I want to put the stock rom on there but that's the key, I can't get access to the root of my sdcard. I can't push anything into the sdcard to flash it. Any ideas what to type or how to access the sdcard? Thanks a million, billion.
Also, I can't get the phone to boot at all, like I can't get passed the Google Logo if I reboot so I can't access the sdcard in the traditional way.
callison.168 said:
Yes I have tried fastboot devices in fastboot mode but nothing because my computer doesn't read the phone in that mode. And yes, I want to put the stock rom on there but that's the key, I can't get access to the root of my sdcard. I can't push anything into the sdcard to flash it. Any ideas what to type or how to access the sdcard? Thanks a million, billion.
Click to expand...
Click to collapse
Connect with adb and type this:
adb shell mount /sdcard
Then type:
adb push rom.zip /sdcard/update.zip
callison.168 said:
Yes I have tried fastboot devices in fastboot mode but nothing because my computer doesn't read the phone in that mode. And yes, I want to put the stock rom on there but that's the key, I can't get access to the root of my sdcard. I can't push anything into the sdcard to flash it. Any ideas what to type or how to access the sdcard? Thanks a million, billion.
Click to expand...
Click to collapse
If fastboot devices returns NOTHING then this is most likely a driver issue. Remove the device through device manager, make sure you have a recent SDK (for the USB driver) and let it re-detect.
callison.168 said:
Also, I can't get the phone to boot at all, like I can't turn on the phone so I can't access the sdcard in the traditional way.
Click to expand...
Click to collapse
If you can get into the boot loader and get a proper USB driver you should be able to flash a recovery.
Once you've flashed Clockwork Mod (recovery) you'll be able to push to the sdcard using ADB or possibly mount the sd card through the CWM menu (although I've yet to have that work).
In order to get a recovery flashed though you need to get fastboot to see your device (unless you can already boot into recovery, then just use ADB).
irishrally said:
Connect with adb and type this:
adb shell mount /sdcard
Then type:
adb push rom.zip /sdcard/update.zip
Click to expand...
Click to collapse
If he's stuck at the Google logo and has a trash boot.img it's not likely he'll be able to get a shell via ADB. Now, if the system is hanging starting a device or looping during boot then that's possible.
krohnjw said:
If he's stuck at the Google logo and has a trash boot.img it's not likely he'll be able to get a shell via ADB. Now, if the system is hanging starting a device or looping during boot then that's possible.
Click to expand...
Click to collapse
He said he can access stock recovery and has connected with adb, unless I read wrong.
irishrally said:
He said he can access stock recovery and has connected with adb, unless I read wrong.
Click to expand...
Click to collapse
Indeed - I saw no clockwork and figured he'd toasted his recovery image as well, but it does look like stock recovery is there. ADB should push fine to the sdcard from recovery then.
More...so if i type in adb reboot bootloader in the recovery screen, it does just that...great. But then my computer makes a noise, a double tap if you will...like a dun dun, like something didn't work. When you plug in something to the computer it usually goes like dun na...but the phone clearly won't read when I'm in bootloader/fastboot mode. So when I type a command, nothing will work...
callison.168 said:
More...so if i type in adb reboot bootloader in the recovery screen, it does just that...great. But then my computer makes a noise, a double tap if you will...like a dun dun, like something didn't work. When you plug in something to the computer it usually goes like dun na...but the phone clearly won't read when I'm in bootloader/fastboot mode. So when I type a command, nothing will work...
Click to expand...
Click to collapse
That noise is that it detects a device has been connected (assuming a recent version of windows). If you want to flash CWM you need to get the driver sorted for the device. No amount of plugging/unplugging is going to fix it.
If you have the stock recovery you can boot into the stock recovery, use adb to push the full OTA package to the sd card and then just flash that from the stock recovery.
callison.168 said:
More...so if i type in adb reboot bootloader in the recovery screen, it does just that...great. But then my computer makes a noise, a double tap if you will...like a dun dun, like something didn't work. When you plug in something to the computer it usually goes like dun na...but the phone clearly won't read when I'm in bootloader/fastboot mode. So when I type a command, nothing will work...
Click to expand...
Click to collapse
Go to the stock recovery like you have done before and type the adb command I wrote above.
Thanks is all I can say. Okay so when I type in the command, this is what I get:
- exec '/system/bin/sh' failed: No such file or directory (2) -
the "stock recovery" I can get into is the picture I posted a link for. That's what I can access as well as the fastboot mode when I first turn on the phone with volume up/power. But when my computer makes the noise that it's connected (using Windows 7 64bit) it makes a different sound then the normal "device connected." Like it's corrupted.
by the way...if we can get this working, I'll post a picture of me holding the fixed phone!

Wiped OS, ADB not working, verge of tears

I am new to this (clearly heh) and wanted to put CM12 on my OPO, as it just arrived today and CM11 is a bit dated.
So after 101 issues I got TWRP installed, great!
However I messed it up by wiping my OS off the phone, leaving me with just access to TWRP and nothing else.
I was reading about ADB, but I cannot get the ADB sideload to start on my phone (it just hangs...).
ADB also does not detect my phone when I do an ADB push.
Any help is appreciated :'(
Acrylicus said:
I am new to this (clearly heh) and wanted to put CM12 on my OPO, as it just arrived today and CM11 is a bit dated.
So after 101 issues I got TWRP installed, great!
However I messed it up by wiping my OS off the phone, leaving me with just access to TWRP and nothing else.
I was reading about ADB, but I cannot get the ADB sideload to start on my phone (it just hangs...).
ADB also does not detect my phone when I do an ADB push.
Any help is appreciated :'(
Click to expand...
Click to collapse
If you are able to get into TWRP then this link http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471 will surely help you
- Install your device drivers first (If they are installed properly, then only skip this)
- Once adb and fastboot files are loaded on your computer, open command prompt and type command "fastboot devices". If you see your device serial number on the prompt, you are good to proceed ahead with flashing procedure.
- I recommend you to flash fastboot images of CMOS12 using that link.

Completely stock OnePlus One stuck in bootloop after latest CM OTA update

Hi everyone,
I'm hoping you can help me. I've had a OnePlus One since August 2014, completely stock. Never modded it, never 'flashed' anything, never installed anything outside of the Google Play Store. Always installed the official OTA updates as they pop up on the phone itself. Basically a reeeeealllly boring android user!
So Thursday morning (09/06/2016) I got a notification that a system update was downloaded and ready to install. Clicked install, the process began, phone rebooted as per usual. However, on the install progress screen (the green android with the spinning cogs), about one third of the way through the phone freezes. About 20 seconds later the phone reboots itself and then tries to install the update again. Freezes. Reboots. Tries to install. Freezes. Reboots. Tries to install.... I think you get the idea. It was doing this for a couple of hours before I checked it.
I'm moderately tech-savvy but never really got involved with android modding, rooting or flashing. So I'm a bit confused as to why my completely stock phone is stuck in a bootloop after installing an official CyanogenMod OTA update. The current status of my phone is that I can only boot into Fastboot mode via VolUp + Power. I can get my computer to detect my phone in Fastboot mode, however it informs me that my bootloader is locked. Attempting to boot into recovery mode via VolDown + Power just starts the update install and enters the bootloop.
I've done some research in to flashing a recovery image or manually applying the OTA update. One problem I've noticed is that I have absolutely NO idea what version of Android / CM my device was at before the update, and I have NO idea what version it was trying to update to. I do know that it was some version of Marshmallow before it broke. I've had no issues with the phone before this, aside the occasional self-reboot.
I REALLY want to keep all my data (pictures, contacts etc.) and am very nervous about actually doing anything because I have very little idea as to what I'm really doing.
Can anyone offer any advice on how to get my phone to boot/update/recover through Fastboot with a locked bootloader and without losing any data?
Thanks,
Stormin'
AKA the "HOW DO I PLAY BOOM BEACH NOW?!" guy
Edit: I solved my issue. It might work for you too, permalink to my post (#9) below: http://forum.xda-developers.com/showpost.php?p=67278091&postcount=9
Are you able to get into recovery mode? If so, you should be able to just flash a new ROM. Sideload one using the adb push command, wipe your data (this will clear settings, apps, etc. DO NOT SELECT SD CARD - that will wipe your personal files including your photos). Then install. Hopefully it should all work fine.
If you can't access the recovery can you access the bootloader sceen (the one with the big green bugdroid)? Then I'd suggest using Fastboot to install a new recovery. Then try the above.
If you can't even get to that stage you're screwed, just like me (unless anyone has any ideas). I've had soft bricks many times before but today I can't even get to the bootloader screen. ADB says the phone is offline. The screen is back and flickers on for a split second every now and then. Bloody CM Updater.
As IBM9001 has said, if you can get into recovery - even being stock - you can still clear your cache - don't do a full factory reset, just the cache, this may help, but even if it doesn't it still rules out one option.
I can't access recovery mode, using the key combo it just boots straight into the installer.
I've got a support ticket open with OnePlus and a scheduled remote assistance tomorrow. However from the preparational email it looks like they are going to factory reset the phone and then clean install CM. They've instructed me to make sure that all my files are backed up... I assume this means I will lose them.
Is there ANY way just to access or pull the photos off my phone? That's the most important bit. Dropbox hit its storage limit at the beginning of 2015 and I refused to pay, so now I have 18 months worth of pictures that I have no other copies of on death row
The only thing I can access is Fastboot...
Edit:
ibm9001 said:
If you can't access the recovery can you access the bootloader sceen (the one with the big green bugdroid)? Then I'd suggest using Fastboot to install a new recovery.
Click to expand...
Click to collapse
I can boot into Fastboot mode, and plugging my phone into my PC works i.e. it is recognised. I have the fastboot .exe and USB drivers, and can issue commands to my phone through cmd such as
Code:
fastboot reboot-bootloader
which works.
How do I use a recovery .img through Fastboot? or can I pull the contents of the sd card through Fastboot?
Hey mate i had same problem with my friends phone. But in that case i was able to open recovery mode.. So if you can do that just download any full zip of opo.. Like cm12.1 or cm13. Then flash it without clearing data.. So will not loose amything not even a single application..
I did that by using adb sideload just google it how to use it. And for that download full android sdk toollit and then download only fastboot and adb domt download whole studio. Because somete old version of adb and minifastboot will not work on adb sideload... So good luck with that..
Hi guys,
I have the same issue!
If I flash a new recovery from fast boot will I lose my data on sdcard?
Thanks.
Sent from my iPad using Tapatalk
masterjigar said:
Hey mate i had same problem with my friends phone. But in that case i was able to open recovery mode.. So if you can do that just download any full zip of opo.. Like cm12.1 or cm13. Then flash it without clearing data.. So will not loose amything not even a single application..
I did that by using adb sideload just google it how to use it. And for that download full android sdk toollit and then download only fastboot and adb domt download whole studio. Because somete old version of adb and minifastboot will not work on adb sideload... So good luck with that..
Click to expand...
Click to collapse
I cannot boot into recovery mode, unfortunately
masterjigar said:
Hey mate i had same problem with my friends phone. But in that case i was able to open recovery mode.. So if you can do that just download any full zip of opo.. Like cm12.1 or cm13. Then flash it without clearing data.. So will not loose amything not even a single application..
I did that by using adb sideload just google it how to use it. And for that download full android sdk toollit and then download only fastboot and adb domt download whole studio. Because somete old version of adb and minifastboot will not work on adb sideload... So good luck with that..
Click to expand...
Click to collapse
I'm currently having a very similar issue, but my phone completed the update. It's just stuck in a reboot/"optimizing apps" loop. I can boot into recovery and I tried to clear cache, but It's still just optimizing apps then rebooting and optimizing again over and over. Do you think your suggestion would help me too?
Wooooo, I've fixed it! I don't know why what I did fixed the issue (probably bypassed something) but my phone is up and running again! First thing I'm doing is making a freakin' backup!
So I was just trying everything in desperation. So that others can attempt to fix the same problem, here's what I did:
1. State of phone was either boots normally and crashes when installing update, or boots into fastboot. Would NOT boot into recovery!
2. Booted into fastboot using key combo (hold Volume Up, then Power Button)
3. Attached phone to computer via data usb lead
4. Started up cmd console, used command "fastboot devices" to check that device was recognised (note you need the fastboot files and USB drivers etc., Google it if you're not sure)
5. Used command "fastboot continue" to continue with 'autoboot'. This rebooted my phone but skipped the installer and went to the 'optimising apps' stage. Left phone alone for a couple of hours but it got stuck in another bootloop optimising apps, rebooting, optimising apps and so on.
6. Turned phone off, then booted normally with just the power button. This started the update install again except it didn't crash, and completed the update install. Then it optimised the apps again (albeit with a different total app count) and once finished, phone starts up normally.
Thanks for all the suggestions everyone! Happy to have my phone back. Now to go through the half-dozen or so voicemails I've collected over these last few days... great.
Hi guys,
@stormin, congrats!
@masterjigar, so you didn't lose the data like photos etc. doing so?
I can boot to recovery, but can't connect by PC to it.
In fast boot mode my PC sees it as well as in dab sideload mode.
I haven't the boot loader unlocked then I have to do it first, right?
But cyanogen site says that unlocking the boot loader will wipe all the device data.
Is there any way get the photos and other files back?
Thanks.
From the FAQ:
Q4a: Can I flash ROMs or SuperSU or anything else with the stock recovery?
No, the stock recovery can only flash zips that are signed by CM, this means official updates only. You need a custom recovery to flash anything else.​
Click to expand...
Click to collapse
Does it mean I can flash an official CM firmware without unlocking the boot loader?
Thanks.
hibernick said:
Hi guys,
@stormin, congrats!
@masterjigar, so you didn't lose the data like photos etc. doing so?
I can boot to recovery, but can't connect by PC to it.
In fast boot mode my PC sees it as well as in dab sideload mode.
I haven't the boot loader unlocked then I have to do it first, right?
But cyanogen site says that unlocking the boot loader will wipe all the device data.
Is there any way get the photos and other files back?
Thanks.
Click to expand...
Click to collapse
That's what adb sideload is all about. It will give you temporary adb access (which is always after unlocking bootloader and root). So you can also flash xip via sideload. Without losing data and media..
Same problem, Also PC not detecting my phone
Hey Guys, I am Stuck at the same thing at Bootloop. But to do anything further I need to connect my phone to the PC. I haven't been able to connect my phone to PC since the time I have got the phone. I tried all available drivers and even tried different cables. I dont know what has been left out to try.
If any one has a working driver pls share the link. Its been three days now that my phone is dead.
Pls help!!
Thanks in advance.
masterjigar said:
That's what adb sideload is all about. It will give you temporary adb access (which is always after unlocking bootloader and root). So you can also flash xip via sideload. Without losing data and media..
Click to expand...
Click to collapse
can I flash this cm-13.1-ZNH2KAS1KN-bacon-boot-debuggable-b19ebe021f.img with the sideload and get adb working over usb?
Thanks
hibernick said:
can I flash this cm-13.1-ZNH2KAS1KN-bacon-boot-debuggable-b19ebe021f.img with the sideload and get adb working over usb?
Thanks
Click to expand...
Click to collapse
You can't adb sideload .img or a partition.
You have to use fastboot.
Code:
fastboot flash boot boot_img_name.img
or
Code:
fastboot boot boot_img_name.img
saurav007 said:
You can't adb sideload .img or a partition. You have to use fastboot.
Click to expand...
Click to collapse
Yes but then I have to unlock my bootloader first. And unlocking bootloader erase all the user files....
Is there other way to to run cm-13.1-ZNH2KAS1KN-bacon-boot-debuggable-b19ebe021f.img on the devise?

Alps x6_v5_x50 phone bricked

I uninstalled magisk root and my phone is not booting and just run into loop on start up. I have a backup on my system but the phone is not reading sdcard as well and I've been trying to send the backup to the phone through adb sideload, all I get is error message. Please help me, I just got the phone.
The phone is China smartphone known as X50 Plus
adb sideload only accepts a properly signed Stock ROM - what always is housed in a ZIP-file.
jwoegerbauer said:
adb sideload only accepts a properly signed Stock ROM - what always is housed in a ZIP-file.
Click to expand...
Click to collapse
Thanks so much, I really appreciate your response. I read your thread, my question is that:
Will my device be connected to the system while I run the command scripts?
Also the fastboot in stock recovery mode is not running!
Can anyone help with this
harbbyhordun said:
Also the fastboot in stock recovery mode is not running!
Can anyone help with this
Click to expand...
Click to collapse
Fastboot deals with device's bootloader, hence to work device must got booted into its bootloader
ADB deals with Android's filesystem, so to work USB debugging must got enabled on device
If you boot device into Recovery then an app gets started what offers you a menu where you can select specific actions from to get applied to the device in hope some common problems get fixed or that device's Stock ROM should get re-installed.

ASUS TF201 - issues getting any OS to boot (though TWRP works fine).

Hello folks.
In my months-long quest to avoid turning an ASUS TF201 tablet into e-waste ...
I've searched, searched again, searched some more, and while I've found answers (none of which have worked), a lot of them seem to be dated, or depend on files that are no longer available for download, so I turn to you for suggestions.
Current state:
The tablet will not boot Android.
TWRP works fine.
The problem(s):
I am unable to flash the device with ASUS' official firmware. TWRP returns an error when the ASUS firmware runs its "checks," then fails.
I have tried Chrombi-KK, following the directions step by step, but a few strange things occur:
1. When flashing through TWRP (.zip images sitting on an SD card), everything completes with no errors, but on reboot, the tablet displays its ASUS logo, but does not boot into Android. I let it sit there for three hours today, and it just sat there, displaying the logo.
2. When trying to flash from ADB (TWRP update for example), it sits there endlessly at "< waiting for any device >". This is odd, because ADB's "reboot" commands works fine.
Now, I'm at a loss. The hardware seems fine, but I'm stuck ... and this is after months of trying, giving up, trying again etc.
Is this a lost cause?
Any help at all would be much appreciated. I've tried so many things, so many online "solutions," to no avail. So I turn to the experts as my Hail Mary pass before sending this to the eco centre.
Thanks for reading, and hopefully ... just maybe ... someone will have the magical set of instructions to get this thing working again.
The only command to verify whether an ADB / Fastboot connection got successfully established is
Code:
adb devices OR fastboot devices
The command
Code:
adb reboot
simply in Android's system file called build.prop (re-)sets flag ro.bootmode to normal what is read by bootloader when Android boots up.
jwoegerbauer said:
The only command to verify whether an ADB / Fastboot connection got successfully established is
Code:
adb devices OR fastboot devices
The command
Code:
adb reboot
simply in Android's system file called build.prop (re-)sets flag ro.bootmode to normal what is read by bootloader when Android boots up.
Click to expand...
Click to collapse
As it turns out, I had already stumbled upon your your "ADB-FASTBOOT-Installer" during a trip down one of the many rabbit holes trying to get this tablet working again.
adb devices returns:
List of devices attached​0123456789ABCDEF recovery​
adb reboot restarts the tablet, which I assume means the ASUS tablet driver is working.
I can't seem to do anything else with adb, however, such as push a new TWRP version, etc. This may be a key point, as it seems likely the version I have of TWRP may be too old to support upgrade using something like Chrombi-KK.
Is this a likely theory?
I would re-flash phone's Stock ROM to get rid off of all mofications applied so far to check for phone is working as expected.
NotTheLips said:
Hello folks.
In my months-long quest to avoid turning an ASUS TF201 tablet into e-waste ...
I've searched, searched again, searched some more, and while I've found answers (none of which have worked), a lot of them seem to be dated, or depend on files that are no longer available for download, so I turn to you for suggestions.
Current state:
The tablet will not boot Android.
TWRP works fine.
The problem(s):
I am unable to flash the device with ASUS' official firmware. TWRP returns an error when the ASUS firmware runs its "checks," then fails.
I have tried Chrombi-KK, following the directions step by step, but a few strange things occur:
1. When flashing through TWRP (.zip images sitting on an SD card), everything completes with no errors, but on reboot, the tablet displays its ASUS logo, but does not boot into Android. I let it sit there for three hours today, and it just sat there, displaying the logo.
2. When trying to flash from ADB (TWRP update for example), it sits there endlessly at "< waiting for any device >". This is odd, because ADB's "reboot" commands works fine.
Now, I'm at a loss. The hardware seems fine, but I'm stuck ... and this is after months of trying, giving up, trying again etc.
Is this a lost cause?
Any help at all would be much appreciated. I've tried so many things, so many online "solutions," to no avail. So I turn to the experts as my Hail Mary pass before sending this to the eco centre.
Thanks for reading, and hopefully ... just maybe ... someone will have the magical set of instructions to get this thing working again.
Click to expand...
Click to collapse
ok, so good thing is twrp boots, now again if you have box with wich the tablet come try to get correct model number and search for official frimware to flash through adb using flashall.cmd
again, if official rom is not installing don't worry flash THIS custom rom using TWRP make sure to wipe all before flashing.
jwoegerbauer said:
I would re-flash phone's Stock ROM to get rid off of all mofications applied so far to check for phone is working as expected.
Click to expand...
Click to collapse
As I mentioned: "I am unable to flash the device with ASUS' official firmware. TWRP returns an error when the ASUS firmware runs its "checks," then fails."
This is exactly what I'm trying to find a solution on how to do.
[email protected] said:
ok, so good thing is twrp boots, now again if you have box with wich the tablet come try to get correct model number and search for official frimware to flash through adb using flashall.cmd
again, if official rom is not installing don't worry flash THIS custom rom using TWRP make sure to wipe all before flashing.
Click to expand...
Click to collapse
Yes, thank goodness it's not completely bricked, haha.
I think the version of TWRP that's on there may be too old, and I'm having trouble pushing a newer version through ADB ... so this is the current hurdle I'm trying to overcome.
Might you happen to have a link to the ASUS TF201 drivers known to work in Windows 10, so I can rule that out? If I can't get ADB to push a newer TWRP version from Windows, I may give it a go in Linux too ... but I'm trying not to open up new avenues of complexity, so I've restricted all my efforts to Windows as that's where most of the online help I can find tends to take place.
Thanks!
Edit: Unfortunately, the download link to [ROM][N 7.1] KatKiss Nougat [TF201] no longer works:
404 Not Found
This has been another constant obstacle, i.e., recommended files to download are no longer available.
NotTheLips said:
As I mentioned: "I am unable to flash the device with ASUS' official firmware. TWRP returns an error when the ASUS firmware runs its "checks," then fails."
This is exactly what I'm trying to find a solution on how to do.
Click to expand...
Click to collapse
Nobody needs TWRP to re-flash a device's Stock ROM.
It's typically done via ADB Sideload method.
NotTheLips said:
Yes, thank goodness it's not completely bricked, haha.
I think the version of TWRP that's on there may be too old, and I'm having trouble pushing a newer version through ADB ... so this is the current hurdle I'm trying to overcome.
Might you happen to have a link to the ASUS TF201 drivers known to work in Windows 10, so I can rule that out? If I can't get ADB to push a newer TWRP version from Windows, I may give it a go in Linux too ... but I'm trying not to open up new avenues of complexity, so I've restricted all my efforts to Windows as that's where most of the online help I can find tends to take place.
Thanks!
Edit: Unfortunately, the download link to [ROM][N 7.1] KatKiss Nougat [TF201] no longer works:
404 Not Found
This has been another constant obstacle, i.e., recommended files to download are no longer available.
Click to expand...
Click to collapse
how you tried to flash stock rom, i mean do you boot into fastboot after booting into twrp or not?
jwoegerbauer said:
Nobody needs TWRP to re-flash a device's Stock ROM.
It's typically done via ADB Sideload method.
Click to expand...
Click to collapse
As I mentioned before, "2. When trying to flash from ADB (TWRP update for example), it sits there endlessly at "< waiting for any device >". This is odd, because ADB's "reboot" commands works fine."
[email protected] said:
how you tried to flash stock rom, i mean do you boot into fastboot after booting into twrp or not?
Click to expand...
Click to collapse
I've tried two methods.
The first is to try to flash it from TWRP, but this fails with an error. The stock ROM appears to be checking for dependencies, and it fails this check.
The second is to use ADB (fastboot) while the tablet is sitting in TRWP. It stalls at "< waiting for any device >".
So this the problem. Neither of those two methods work for the stock ROM.
With a third party ROM, TWRP appears to flash the device successfully (no errors or stalls). When I reboot the device, it will not boot Android, and gets stuck at the ASUS boot logo indefinitely.
I'm not sure what do next to get past these two problems.
NotTheLips said:
I've tried two methods.
The first is to try to flash it from TWRP, but this fails with an error. The stock ROM appears to be checking for dependencies, and it fails this check.
The second is to use ADB (fastboot) while the tablet is sitting in TRWP. It stalls at "< waiting for any device >".
So this the problem. Neither of those two methods work for the stock ROM.
With a third party ROM, TWRP appears to flash the device successfully (no errors or stalls). When I reboot the device, it will not boot Android, and gets stuck at the ASUS boot logo indefinitely.
I'm not sure what do next to get past these two problems.
Click to expand...
Click to collapse
here is the problem, ok so follow the steps carefully,
boot into twrp
then connect your phone to your pc
type "adb devices",
if some thing like 1234567890 -recovery shows up proceed else start-over,
after successfully detected by adb typed "adb reboot bootloader"
then after booting into fastboot mode type "fastboot device"
if something shows up proceed else tell me
make sure you have installed adb and fastboot properly,
after all this run the cmd file in stock rom, to automatically flash it.
[email protected] said:
here is the problem, ok so follow the steps carefully,
boot into twrp
then connect your phone to your pc
type "adb devices",
if some thing like 1234567890 -recovery shows up proceed else start-over,
after successfully detected by adb typed "adb reboot bootloader"
then after booting into fastboot mode type "fastboot device"
if something shows up proceed else tell me
make sure you have installed adb and fastboot properly,
after all this run the cmd file in stock rom, to automatically flash it.
Click to expand...
Click to collapse
Here's what happened:
C:\Windows\system32>adb devices​List of devices attached​0123456789ABCDEF recovery​​C:\Windows\system32>adb reboot bootloader​​C:\Windows\system32>fastboot device​< waiting for any device >​​It sits at < waiting for any device > indefinitely, until I reboot the device.
NotTheLips said:
Here's what happened:
C:\Windows\system32>adb devices​List of devices attached​0123456789ABCDEF recovery​​C:\Windows\system32>adb reboot bootloader​​C:\Windows\system32>fastboot device​< waiting for any device >​​It sits at < waiting for any device > indefinitely, until I reboot the device.
Click to expand...
Click to collapse
the problem is your pc does not have adb and fastboot properly installed
try this one https://forum.xda-developers.com/t/tool-minimal-adb-and-fastboot-2-9-18.2317790/
also, use this official driver https://www.asus.com/SupportOnly/Eee_Pad_Transformer_Prime_TF201/HelpDesk_Download/
if your pc is 64 bit use win764bit version
NotTheLips said:
Here's what happened:
C:\Windows\system32>adb devices​List of devices attached​0123456789ABCDEF recovery​​C:\Windows\system32>adb reboot bootloader​​C:\Windows\system32>fastboot device​< waiting for any device >​​It sits at < waiting for any device > indefinitely, until I reboot the device.
Click to expand...
Click to collapse
This "waiting for device" problem happens when the USB device node is not accessible to your current user. The USB id is different in Fastboot mode, so you can easily have permission to it in ADB but not in Fastboot.
Each manufacturer implements Fastboot differently. So, if not already done yet, download and install the suitable "Android USB Driver" provided by ASUS. Then Fastboot should work.
BTW: Your device actually stucks in recovery mode.
Is OEM Unlock got enabled in Android settings? If not, Fastboot never will work.

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