[Q] How to unbrick TF300T in APX mode - Transformer TF300T Q&A, Help & Troubleshooting

TF300T was running CM 10.2 with TWRP recovery before it was bricked. While installing CM 11, I installed CWM recovery over TWRP for the installation to be successful but that's when the tablet got bricked. The tablet is unlocked and when powered on it's stuck on the "ASUS logo" in the center and "the device is unlocked" in the top left corner.
The tablet won't boot into fastboot or adb either, but it's detected by the computer (Windows 8.1 Pro x64) in APX mode. I do not have NVFlash back up, so can't use NVFlash either.
I have removed the back cover, unplugged the battery and still no go. I have drained the battery completely a couple of times, still no go. Also, I have followed the thread http://forum.xda-developers.com/showthread.php?t=2034866 ([GUIDE] How to enter APX mode or Bootloader menu) which helped me get into the APX mode, but no go for the bootlooader menu.
Moreover, I also followed the thread http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12, but still no go.
While searching, I can across this video http://www.youtube.com/watch?v=I2PMJcAKSe0 but it's only for ASUS TF101. Can someone please create the same program but for TF300T or is there any other way to unbrick the tablet in APX mode?

Iscarecomputers said:
TF300T was running CM 10.2 with TWRP recovery before it was bricked. While installing CM 11, I installed CWM recovery over TWRP for the installation to be successful but that's when the tablet got bricked. The tablet is unlocked and when powered on it's stuck on the "ASUS logo" in the center and "the device is unlocked" in the top left corner.
The tablet won't boot into fastboot or adb either, but it's detected by the computer (Windows 8.1 Pro x64) in APX mode. I do not have NVFlash back up, so can't use NVFlash either.
I have removed the back cover, unplugged the battery and still no go. I have drained the battery completely a couple of times, still no go. Also, I have followed the thread http://forum.xda-developers.com/showthread.php?t=2034866 ([GUIDE] How to enter APX mode or Bootloader menu) which helped me get into the APX mode, but no go for the bootlooader menu.
Moreover, I also followed the thread http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12, but still no go.
While searching, I can across this video http://www.youtube.com/watch?v=I2PMJcAKSe0 but it's only for ASUS TF101. Can someone please create the same program but for TF300T or is there any other way to unbrick the tablet in APX mode?
Click to expand...
Click to collapse
In order to unbrick in APX mode, you need to have made NvFlash Backups prior to bricking. That is the only way to get into APX mode. The blank screen you get while pressing vol up means that the tablet is ready to enter, not that it has entered. If you made the bin.blob backuo, you can look here: http://forum.xda-developers.com/showpost.php?p=47903957&postcount=2. Otherwise, APX mode will not serve you any good.

cmendonc2 said:
In order to unbrick in APX mode, you need to have made NvFlash Backups prior to bricking. That is the only way to get into APX mode. The blank screen you get while pressing vol up means that the tablet is ready to enter, not that it has entered. If you made the bin.blob backuo, you can look here: http://forum.xda-developers.com/showpost.php?p=47903957&postcount=2. Otherwise, APX mode will not serve you any good.
Click to expand...
Click to collapse
As I mentioned in my first post, I do not have NvFlash backup. However, I am able to get into APX mode and the computer detects the tablet in APX mode. Moreover, the tablet is shown in "Devices and Printers" option in Control Panel on the computer as "Asus APX" or something similar to that name.
I hope there is a way to unbrick the tablet in APX mode without NvFlash backup, as someone created something on those lines in the youtube video I posted in my first post. Any help from any developers or members would be awesome. Thank you.

Iscarecomputers said:
As I mentioned in my first post, I do not have NvFlash backup. However, I am able to get into APX mode and the computer detects the tablet in APX mode. Moreover, the tablet is shown in "Devices and Printers" option in Control Panel on the computer as "Asus APX" or something similar to that name.
I hope there is a way to unbrick the tablet in APX mode without NvFlash backup, as someone created something on those lines in the youtube video I posted in my first post. Any help from any developers or members would be awesome. Thank you.
Click to expand...
Click to collapse
The easy flasher from the first post requires you to use the blob.bin extracted from the tf101, so it is the same concept. APX mode, as of now, will only be useful if you made those backups.

cmendonc2 said:
The easy flasher from the first post requires you to use the blob.bin extracted from the tf101, so it is the same concept. APX mode, as of now, will only be useful if you made those backups.
Click to expand...
Click to collapse
Gotcha. I do have the blob file, but it's from WW_epad-user-10.6.1.15.3.
Hopefully, someone can come up with a solution or a fix for such an issue. Will be waiting.

I have the same problem! there are no solution? I don't have backup

Related

[Q] TF101 entering NvFlash recovery mode

Hi there,
Help needed.
I have a TF101 and I was reading up on how to root my device. So this is what I did
I turned off my device, and then pressed volume up + power, and my tablet went into APX mode.
Then, I tried to use NvFlash. What I did was executing the download.bat file, it ran the script, and then my TF101 is stucked at "Entering NvFlash recovery mode"
I have tried searching around on how to fix this but to no avail.
Please please help me
Thanks
Sean
Link to the root kit you used.
And why didn't you just use vipermod?
I was reading this
http://forum.xda-developers.com/showthread.php?t=1494230
And it says use NvFlash to recover roms
And from there, I used this
http://forum.xda-developers.com/showthread.php?t=1123429
And followed these instructions
To use it you must enter APX mode on your TF101. This is tricky and confuses many users. The procedure is;
1. Press and hold volume UP and POWER buttons at the same time (it doesn't matter if the TF101 is on or off, if it is on, simply wait until it shuts off before proceding).
2. HOLD these buttons for approximately SIX SECONDS.
3. Plug TF101 into PC and listen for it to chime that it has detected it, it should load drivers and device will be listed in Right Cick>Computer/Properties/Device Manager/USB Universal Serial Bus Controller (or similar) as NVIDIA, not as ASUS.
4. If it does not, power on the TF and try again until it does.
NOTE: This is the only way to know if it is in APX mode as the screen remains powered off completely.
Once in APX mode now you can use NVFlash tool, place the system, boot, and recovery .img files into the root of the folder you extract NVFlash into and execute the download.bat file. If at any point the flash fails, this likely means you are SBK2.
Click to expand...
Click to collapse
I thought I would need to use NvFlash first, then get ADB running, and then only use ViperMod
You have a sbk1 tf right?
Correct,
SBK1 TF
I got my TF101 to boot up again by referring to this
http://forum.xda-developers.com/showthread.php?t=1573835
Okay so to root it, I should go straight away to ViperMod in ABK mode?
So I can avoid NvFlash?
If you are on 8.6.x.19 razor claw would be the easiest route, Otherwise viper mod will work. I have not used viper mod so you might want to read up on it first.
wzseow said:
I got my TF101 to boot up again by referring to this
http://forum.xda-developers.com/showthread.php?t=1573835
Okay so to root it, I should go straight away to ViperMod in ABK mode?
So I can avoid NvFlash?
Click to expand...
Click to collapse
Correct just use ViperMod (option 1), not sure what ABK is but just turn your tf on like normal.

[Q] Bricked my pad

Hi, I think I bricked my pad. Only thing I can access is CWM.
What I did was to install ubuntu tablet version and my tablet started to show black screen but do nothing else.
Then I managed to get into CWM by volume down and power and then volume up.
Now,I installed one of those roms at here http://forum.xda-developers.com/showthread.php?t=1112527
and my tab freezes at the startup screen where it says Eee Pad Asus.
How can I recover from here? volume up+power( for ASX) does not work too!
Tried one of the unbricking methods yet ?
http://forum.xda-developers.com/showthread.php?t=1681155
and
http://forum.xda-developers.com/showthread.php?t=1688012
Why do you think APX mode is not working?
Long press power for about 30 seconds to make sure the tablet is off, then try APX mode again, make sure it is plugged into the USB PC when you power it off and when you try APX so you know when it has connected by the USB connect sound
Does adb work? and in another 'help I'm bricked!' thread a few threads down in Q&A I posted a total NvFlash use guide. Try my PERI tool, then Easyflasher, and if neither work then find my other post and follow that.
Detection posted links above me^^

[Q] no fastboot no adb wrong drivers?

WHats up guys? My tf300 is still bricked after like 6 months. It started with me flashing the wrong recovery image then a wipe data finished it off. I can get into apx mode and device manager sees it as an apx device with a yellow triangle, or as several different names according to which driver i use. I have tried all the asus ones, the adb, the composite adb, all the ones from the naked driver set. No matter which ones i use fastboot devices returns nothing and adb devices says "list of devices attatched but nothing. Is there something wrong with the way im using fastboot? I just go to the fastboot folder and open a cmd window and it starts like C:\user\fastboot or whatever and im stuck there please help
jerimynal wiley said:
WHats up guys? My tf300 is still bricked after like 6 months. It started with me flashing the wrong recovery image then a wipe data finished it off. I can get into apx mode and device manager sees it as an apx device with a yellow triangle, or as several different names according to which driver i use. I have tried all the asus ones, the adb, the composite adb, all the ones from the naked driver set. No matter which ones i use fastboot devices returns nothing and adb devices says "list of devices attatched but nothing. Is there something wrong with the way im using fastboot? I just go to the fastboot folder and open a cmd window and it starts like C:\user\fastboot or whatever and im stuck there please help
Click to expand...
Click to collapse
Questions: what rom did you have before? Did you wipe data from the Asus menu, and not from inside a custom recovery? When you now try to get into fastboot by holding volume down + power, what happens? No matter what, try Buster99's solution. If the only mode you can get into is APX, and you didn't generate NVflash files, then I'm afraid your motherboard is stuck, the only solution to which is replacing it.
graphdarnell said:
Questions: what rom did you have before? Did you wipe data from the Asus menu, and not from inside a custom recovery? When you now try to get into fastboot by holding volume down + power, what happens? No matter what, try Buster99's solution. If the only mode you can get into is APX, and you didn't generate NVflash files, then I'm afraid your motherboard is stuck, the only solution to which is replacing it.
Click to expand...
Click to collapse
i came from stock jb rom and i flashed an ics cwm recovery img i got into the bootloader screen but it wouldnt go into recovery so for some stupid reason i did a wipe from there, from the asus menu. volume down and power just shuts the screen off for a few seconds then straight back to the asus screen volume up and power will apx mode. the driver i had got from asus pulled up transformer prime apx interface in device manager
jerimynal wiley said:
i came from stock jb rom and i flashed an ics cwm recovery img i got into the bootloader screen but it wouldnt go into recovery so for some stupid reason i did a wipe from there, from the asus menu. volume down and power just shuts the screen off for a few seconds then straight back to the asus screen volume up and power will apx mode. the driver i had got from asus pulled up transformer prime apx interface in device manager
Click to expand...
Click to collapse
Must've been the wrong recovery that screwed up your tab. In my experience, wiping data from the Asus menu while you're on stock rom is not supposed to brick it as described by you. Try this method. It has saved quite a few semi-dead tabs. Good luck, and give thanks to the author if it helps.
graphdarnell said:
Must've been the wrong recovery that screwed up your tab. In my experience, wiping data from the Asus menu while you're on stock rom is not supposed to brick it as described by you. Try this method. It has saved quite a few semi-dead tabs. Good luck, and give thanks to the author if it helps.
Click to expand...
Click to collapse
im sure it was the wrong recovery i dont know why i did it. i had another ics tablet and for some reasone i put both recovery images in the same folder the link u provided is one that i had previously read. I cant even get fastboot to "see" the tablet.

[Q][A700]Boot to APX/nvflash Mode?

My a700 is soft-bricked, and after searching around (fastboot isn't able to flash anything, so my partitions are likely destroyed,) it looks like I can possibly fix it with APX or nVflash mode. Here's the thing: I'm not sure how to get into those modes. I've tried holding reset and power for APX mode, but nothing happens. As for nvflash, I'm clueless. Does anyone know anything that could help?
I'm afraid your in the same situation as myself, mine is also bricked to apx mode. Nvflash is of no use to us a700 owners as Acer will not release the sbk (secure boot key) that we would need to create blob files etc. Also you will not see any visual indications of apx mode and you will only be aware of it when you are plugged into the PC via a USB cable as your PC will attempt to load apx drivers. I have tried all combinations of resetting and even opened the a700 and disconnected the battery but to no avail.
Sent from my U30GT 2 using xda app-developers app
Ok, I at least figured out how to boot to APX mode, but now I need to find out if that's any use to me or not. I decided, in my sleepy 2AM stupor, to get creative with the button combinations. I held in BOTH volume buttons simultaneously, and it worked! Nothing came on on the tablet, but Windows saw it and said that it couldn't install an APX driver. Now... where to go from here, I wonder?

[Q] Shield Tablet stuck in APX mode - Black Screen - no bootloader

Good day everyone, here is my issue.
I bought the nVidia Shield WiFi 16G and didn't do any modification to it at all (original bootloader, straight out the box)
I tried to do the OTA updates and it kept freezing at the nvidia logo.
Force shut down and bootloader to Recovery mode.
The update 1.2.1 installed when it started to boot (little android guy with the thing spinning in his chest).
Update 2.1 same issue.
I repeat the steps. Everything seemed fine as well, the loading bar finished.
Then the screen went black... pressing any button doesn't do anything. So I decide to plug it in my PC.
It says APX Driver can't be found (recognized that way by PC)
Screen is black
Cannot get in bootloader by pressing power & volume-.
I can turn on/off the tablet (I get the sound that it disconnect from my PC) by holding power button down.
Then pressing power & volume+ together, it connects again. Still Black screen.
I read a bunch of forum about the NVflash and nothing seems to work, all the process require me to go in Bootloader which I cannot access.
I am able to install drivers for the tablet to be recognized, but there is so many of them that I am not even sure they are the right one.
When I try the NVflash solutions, my command prompt says "fastboot" unrecognized command.
Nothing is working.... I need help
Thank you in advance
Wicstar said:
When I try the NVflash solutions, my command prompt says "fastboot" unrecognized command.
Click to expand...
Click to collapse
Do you have fastboot on your computer?
danjull said:
Do you have fastboot on your computer?
Click to expand...
Click to collapse
I thought Fastboot was a mode I had to put my tablet in...
Where can I find it ?
Minimal ADB + Fastboot
Here, follow instruccions:
http://forum.xda-developers.com/showthread.php?t=2317790
albertorodast2007 said:
Here, follow instruccions:
http://forum.xda-developers.com/showthread.php?t=2317790
Click to expand...
Click to collapse
Ok so I have installed Fastbood and Minimal ADB.
For some reason, the NVidia website wants me to register as a Dev now to download the image of my tablet...
Anywhere I could find the image to nvflash ?
I am downloading the Linux version right now, 2.2Gb, will that be alright ? I am running Windows 7
Oh and the command prompt keep saying error: device not found when I type: adb reboot bootloader
This is frustrating....
Wicstar said:
Ok so I have installed Fastbood and Minimal ADB.
For some reason, the NVidia website wants me to register as a Dev now to download the image of my tablet...
Anywhere I could find the image to nvflash ?
I am downloading the Linux version right now, 2.2Gb, will that be alright ? I am running Windows 7
Oh and the command prompt keep saying error: device not found when I type: adb reboot bootloader
This is frustrating....
Click to expand...
Click to collapse
If you're not getting passed the bootloader, you're not getting adb access. Booting up by holding power and volume will get you in bootloader mode and fastboot should work.
danjull said:
If you're not getting passed the bootloader, you're not getting adb access. Booting up by holding power and volume will get you in bootloader mode and fastboot should work.
Click to expand...
Click to collapse
There is no bootloader for me.
Power button does nothing.
Power & volume down does nothing (no bootloader comes up, it was doing it the first time I got the tablet)
Power & volume up (while connected to PC) will connect to the computer as APX.
Holding power once in APX mode disconnect from the PC.
Those are the only thing happening with the tablet.
Black screen lol
Wicstar said:
There is no bootloader for me.
Power button does nothing.
Power & volume down does nothing (no bootloader comes up, it was doing it the first time I got the tablet)
Power & volume up (while connected to PC) will connect to the computer as APX.
Holding power once in APX mode disconnect from the PC.
Those are the only thing happening with the tablet.
Black screen lol
Click to expand...
Click to collapse
Sounds to me like you've got two options. Either a) Get the apx driver for windows, get it in apx mode and run nvflash. Or b) contact nvidia and get it swapped out.
I had a similar experience with another device. It shipped slightly damaged and when I tried to update it locked me out of my phone. Had to rma it....
danjull said:
Sounds to me like you've got two options. Either a) Get the apx driver for windows, get it in apx mode and run nvflash. Or b) contact nvidia and get it swapped out.
Click to expand...
Click to collapse
Well it seems to be in APX mode already.
I tried different drivers, but having the right one would help me out a bunch (I have the Shield tablet WIFI 16G)
not sure how to run nvflash. Everywhere I look they ask to access to the bootloader, which I don't have access to. And I am not sure where to get it, I found different version on different website.
A bit of help would help tons!
Wicstar said:
Well it seems to be in APX mode already.
I tried different drivers, but having the right one would help me out a bunch (I have the Shield tablet WIFI 16G)
not sure how to run nvflash. Everywhere I look they ask to access to the bootloader, which I don't have access to. And I am not sure where to get it, I found different version on different website.
A bit of help would help tons!
Click to expand...
Click to collapse
Did you ever get this figured out, it would appear I'm now in the same boat.
Mav3rek said:
Did you ever get this figured out, it would appear I'm now in the same boat.
Click to expand...
Click to collapse
I have this problem too. My device not start in fastboot mode - when i pressed Power+Volume down - tablet go on, logo nvidia, and power off, in normal mode not start, after logo nvidia, start launcher and message power off, and shutdown
My way in APX mode only, but how can i flash in this mode????
_SkyDreamer_ said:
I have this problem too. My device not start in fastboot mode - when i pressed Power+Volume down - tablet go on, logo nvidia, and power off, in normal mode not start, after logo nvidia, start launcher and message power off, and shutdown
My way in APX mode only, but how can i flash in this mode????
Click to expand...
Click to collapse
I too fell to the dark side and aquired this problem. You intelligent people, please solve it for me. I cant find any APX-drivers out there.
Yep my first shield did the same thing and I had to send it back because I couldn't figure out any way to get to bootloader nor fastboot, just a black screen.
My second shield had blown speakers due to that 3.0 update failure and finally the latest update works good with my 3rd tablet, thankfully I don't have the battery recall.
Sent from my SHIELD Tablet using XDA Free mobile app
All these problems you are all facing is the killswitch made by Nvidia for the recalled tablets. They render them unusable so you are forced to return/dispose of.
So far, there is no way to fix them, being necessary a special driver that only Nvidia has.
Hi I have a Shield Tablet killed by NVidia. Working on it, I created APX drivers to make this tablet recognized by Windows. I don't know if drivers work really as I wish... I created them basing on Universal Driver Naked (APX Version). But the only thing is that any nvflash tool that I tried doesn't work and one gave me error 0x30011 (I think it is device not connected). So this work is so hard...
Shield
Hi, same since 1st september, black screen+APX forever. I'm on Linux with nvflash version from Transformer LinuxTools.
Usually no need of drivers on linux so I give it a try. With '-r' stay on [resume mode] message, '--go' Error 0x8 and '-bl bootloader.img' Unknown device. Where did you find your nvflash version ? maybe mine is wrong or too old.
But what is fun is when I disconnect the Shield, I have a greetings from nvflash command line so Shield is alive...
Last thing I did with was playing with DS4/PS4 controller wired on usb by an app bought on store. Not rooted so I'm confuse but the Shield was plugged in charge since a week maybe the mistake. So I try to manually update/boot through APX, no way with pwr & buttons.
I found them googling and I tried tegra3 and 5.1.x (that I understood it is for GPU NVidia). So I haven't tried right version i think... I don't know even which one are good for me I'll see on linux what happens (if I can install it)
TDP 3.0r3/4 have nvflash and APX drivers (and I'd assume the Jetson TK1 OS images have them too). but, as repeatedly mentioned on these forums, these are all useless without the SBK that is unique to each device, and that only Nvidia knows
Bogdacutu said:
TDP 3.0r3/4 have nvflash and APX drivers (and I'd assume the Jetson TK1 OS images have them too). but, as repeatedly mentioned on these forums, these are all useless without the SBK that is unique to each device, and that only Nvidia knows
Click to expand...
Click to collapse
@Bogdacutu
can you dump a copy of the bootloader and post it?
m

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