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[Q] I need help! My TF got stuck and can't boot into recovery!!!

My Tf got stuck at the logo Eee Pad boot after I tried to restore the old rom, and now it can't do anything except boot and stuck at the logo.
I tried the nvflash unbricking technique from rayman84 : http://forum.xda-developers.com/showthread.php?t=1123429
, but my TF only listed as unknown device when I tried to get to APX mode and it also said,
"This device is disabled because the firmware of the device did not give it the required resources. (Code 29)"
Now I don't know what else to do. Please help! I hope I am not completely bricked the device yet.

Have you tried the button combo to get into recovery?
Press and hold the Vol down + power button.
When prompt, you'll see lines of words at the top left of the screen, push the Vol up button immediately within 5 sec to get into recovery.

Apparently, I didn't know the button combo. Anyways you save my niece's TF. Thanks a bunch
Edit: although the tablet is working now, it still got the message usb unknown device. Do you know how to fix it?

Hi, i don't know if i should post a new thread but my problem is almost the same as bengob3t's one.
I have a brand new TF101 with a B70 Serial number, but i successfully rooted it using the RazorClaw Tool. Then i tried to install clockwork mod followin this topic : http://forum.xda-developers.com/showthread.php?t=1106587
I directly applied the instructions from step 8 (download hashmyfiles etc...) and i rebooted my Eee pad manually step 13
I didn't see any progress bar, but my device is stuck on the Asus screen, and the speakers make stange noises at regular intervals.
I am able to go into recovery though (power + vol down then vol up) but the factory reset doesn't work, and i cant really do anything (at least not anything that i know what it is).
Is my tablet definitely bricked ? If not, how can i bring it back to life ?
I wasn't able to use NVFlash, as i can't seem to go in APX mode. I press power+vol up, i hear the sound usb device connected and immediately after i hear the sound "usb device disconncted"
Nvflash says
"Nvflash started
rcm version 0X4
Command send failed (usb write failed)"
Thanks in advance for your help.
EDIT : When i put the micro sdcard from my phone into the tablet, i am able to mount it. So i will probably be able to flash something from it, but what ? Do i have to flash a recovery ? Directly a custom rom ?
I'm a little lost, but i'll try to give you guys as mush info as i can find.
EDIT2 : I flashed the PRIME rom, everything seems to be back to normal... if you got info on my situation, don't hesitate to fill me in ^^ i'd like to understand what i did wrong, even though i dodged the bullet.

bengob3t said:
Apparently, I didn't know the button combo. Anyways you save my niece's TF. Thanks a bunch
Edit: although the tablet is working now, it still got the message usb unknown device. Do you know how to fix it?
Click to expand...
Click to collapse
Do you have the correct driver installed? Do you have Asus sync install on your PC?

hmm.. I'm not sure. I downloaded the unbricked tool nvflash file, and the tool already had usb driver inside it. Is that the driver you were talking about? I never were able to get to the point where I need to point the APX to where the driver located because it always said unknown driver the whole time.

Super bricked

I hope I can save it but after 4 hours of trying and reading I can't seem to do it.
I was running an unlocked tf300 with cleanrom. I wanted to update to the newest version of cleanrom and have my tablet on that and ready for school for next term. I downloaded cleanrom on laptop and put it on my micro sd. Went and grabbed the tablet and tried using rom manager to install from sd and backup the os that was on it. Didn't work. So booted into the fastboot spot (vol down and power) and decided i should wipe data since i was there. Went over to that and pushed vol up (once). Let it sit for like 45 minutes and was still on the same screen. Thought to myself well it must be done. Shut off the tablet to restart it.
This is where the problem came up. Now i'm stuck on asus logo. The VD+P doesn't do anything but reboot into the asus logo. The VU+P will put it into a black screen and windows sees it as Asus transformer Prime APX interface. But adb can't see the device. Just device manager. typing fastboot -i 0x0b05 thing just says <waiting for device>
Every post i've read seems to tell people to just push VD+P but if i could do that and get to recovery i wouldn't be doing this. I can't put a blob file into the root sd of the tablet because I can't see the tablet.
Any help would be greatly appreciated.

Maybe this link can help.
http://forum.xda-developers.com/showthread.php?t=2034866

Device manager already sees it as transformer prime apx thing though. So i assume by getting it into APX mode doing the VU+P method it is in apx? or is that not mean it's actually in apx?

bigworm82 said:
Device manager already sees it as transformer prime apx thing though. So i assume by getting it into APX mode doing the VU+P method it is in apx? or is that not mean it's actually in apx?
Click to expand...
Click to collapse
Apx mode is not going to do you any good. The previous link also provides info on blootloader " recovery " mode.
Try the universal naked drivers from this link and try fastboot again.
http://forum.xda-developers.com/showthread.php?t=1766220
If that does not work leave off ' -i 0x0b05 ' in fastboot -i 0x0b05 command and try again.

tobdaryl said:
Apx mode is not going to do you any good. The previous link also provides info on blootloader " recovery " mode.
Try the universal naked drivers from this link and try fastboot again.
http://forum.xda-developers.com/showthread.php?t=1766220
If that does not work leave off ' -i 0x0b05 ' in fastboot -i 0x0b05 command and try again.
Click to expand...
Click to collapse
Already installed the naked drivers and that's when the computer recognized it in the device manager portion as the asus prime apx interface thing. It still just says <waiting for device> in everything i try on fastboot.

bigworm82 said:
Already installed the naked drivers and that's when the computer recognized it in the device manager portion as the asus prime apx interface thing. It still just says <waiting for device> in everything i try on fastboot.
Click to expand...
Click to collapse
Are you in fastboot mode or apx when you give the commands?

tobdaryl said:
Are you in fastboot mode or apx when you give the commands?
Click to expand...
Click to collapse
i just go into cmd and go to the folder i put fastboot and all in and type fastboot..... so on.. what should i do?

bigworm82 said:
i just go into cmd and go to the folder i put fastboot and all in and type fastboot..... so on.. what should i do?
Click to expand...
Click to collapse
I know you previously said you couldn't get into recovery-bootloader menu but that is what we have to accomplish. Apx mode on this unit is only good if you previously installed nvflash and had all of the proper backup files.
The first link I provided provides 9 ways to get into bootloader menu and from there either fastboot mode (usb symbol) or recovery (RCK). I know some may not work but we only need one.

tobdaryl said:
I know you previously said you couldn't get into recovery-bootloader menu but that is what we have to accomplish. Apx mode on this unit is only good if you previously installed nvflash and had all of the proper backup files.
The first link I provided provides 9 ways to get into bootloader menu and from there either fastboot mode (usb symbol) or recovery (RCK). I know some may not work but we only need one.
Click to expand...
Click to collapse
I'm confused the first link is to get into APX mode from how i read it on the page. Am i wrong? I have no issues getting into this mode.

bigworm82 said:
I'm confused the first link is to get into APX mode from how i read it on the page. Am i wrong? I have no issues getting into this mode.
Click to expand...
Click to collapse
apx or bootloader menu-recovery.
To use this guide to enter the bootloader menu just use volume down everywhere it says volume up. Everything else is the same.
4. with unit powered on hold volume down and press reset with paperclip - (don't press hard) reset is located about 25mm or 1in below the sdcard
try this one.

tobdaryl said:
apx or bootloader menu-recovery.
4. with unit powered on hold volume down and press reset with paperclip - (don't press hard)
reset is located about 25mm or 1in below the sdcard
try this one.
To use this guide to enter the bootloader menu just use volume down everywhere it says volume up. Everything else is the same.
Click to expand...
Click to collapse
nope just back to asus logo

bigworm82 said:
nope just back to asus logo
Click to expand...
Click to collapse
use cmd(terminal) in same directory as fastboot
adb reboot then immediately hold volume down
if no help then
adb reboot bootloader - no need for volume on this one

tobdaryl said:
use cmd(terminal) in same directory as fastboot
adb reboot then immediately hold volume down
if no help then
adb reboot bootloader - no need for volume on this one
Click to expand...
Click to collapse
Device not found.

bigworm82 said:
Device not found.
Click to expand...
Click to collapse
Force power off by holding power a few seconds.
Plug power cord into tab with the other end of the power cord not plugged into anything. Hold volume down and plug other end of power cord into pc. This done without pressing power again after it is powered off. Easier to do than describe.

tobdaryl said:
Force power off by holding power a few seconds.
Plug power cord into tab with the other end of the power cord not plugged into anything. Hold volume down and plug other end of power cord into pc. This done without pressing power again after it is powered off. Easier to do than describe.
Click to expand...
Click to collapse
The Problem lies in holding the volume down button. No matter how i turn it on. either plugging it in while holding power down, reset button, letting it die and then plugging it in and turning it on....it just goes into the asus logo screen .

bigworm82 said:
The Problem lies in holding the volume down button. No matter how i turn it on. either plugging it in while holding power down, reset button, letting it die and then plugging it in and turning it on....it just goes into the asus logo screen .
Click to expand...
Click to collapse
I'm sorry, I did understand that from the beginning but the only things that can save you is get into that menu or recovery or your tab accepts a fastboot or adb command. That is the reason you keep getting pushed into that direction.
My best guesses are out. Sometimes redoing something you have already done twice works.
My experience and all I have read rom manager has issues on this tab. Also many who wiped data from the bootloader- recovery menu reach this same point when they reboot.
Some have recovered by just doing each thing again and again and suddenly something works.

Yeah i fear i'm just going to have to call ASUS . sad panda. i keep trying different methods of doing the VD+P method but it just won't get into recovery.

bigworm82 said:
Yeah i fear i'm just going to have to call ASUS . sad panda. i keep trying different methods of doing the VD+P method but it just won't get into recovery.
Click to expand...
Click to collapse
I'm sorry but I am afraid you are correct. If unable to use adb, fastboot, or get into recovery there aren't any other options. Sorry if I pushed more than I should but I wanted to see a more positive result than calling Asus.
Good Luck!

tobdaryl said:
I'm sorry but I am afraid you are correct. If unable to use adb, fastboot, or get into recovery there aren't any other options. Sorry if I pushed more than I should but I wanted to see a more positive result than calling Asus.
Good Luck!
Click to expand...
Click to collapse
I appreciate the attempts though . I really didn't want to have to call them lol.

bigworm82 said:
I appreciate the attempts though . I really didn't want to have to call them lol.
Click to expand...
Click to collapse
If you explain you were having issues with your tab and used wipe data hoping to correct the problem. Now when you turn on it just stays on the asus logo maybe they will repair it without cost.
If you go into detail you probably won't get lucky.

[Q] Bricked?

Hi,
My Transformer TF101 would not start, it got stuck at the ASUS boot screen. So I thought that I would restore the device by flashing stock rom using EasyFlasher. But I ran into problem...
I put the device into APX mode and updated the driver from Universal Naked Driver 0.72.
Once I do "Flash Asus stock zip / Unbrick" from EasyFlasher 0.8.3 a command window appear (see attached picture) and after a while the text in the windows stops at
[+] Sending bootloader...
Sending file: 100 %
The screen of my transformer lights up and says the following:
Entering NvFlash recovery mode / Nv3p Server
Chip Uid: 033c20c140e04117
I waited several hours in this state but nothing happens. If I unplug the transformer from my PC I am not able to reboot it, the only thing that seems to work is power button + volume up to start APX mode and then connect to the PC.
Does anybody have some idea what could be wrong? I am thankful for all suggestions.

Hi.
Happy new year ...
Suggestions
power button + volume Down, after volume up ---> to start RECOVERY mode ????
---------- Post added at 12:01 PM ---------- Previous post was at 11:56 AM ----------
then reinstalled a rom, or restore backup...

I got a new (to me) TF101 for my OH for Christmas - I seem to remember the serial number was not mentioned in EasyFlasher either - however cutting a long story short, EasyFlasher didn't work, but I googled and used PIRI and was rooted and booted in no time at all. Hope this helps you.

Hi,
Thanks for the suggestions. Unfortunately I cannot boot into recovery, nothing happens when I press volume down + power. Since I cannot start it I cannot use adb so I guess the only option is to flash recovery/stock rom in APX mode. But here is where I run into problem, nothings happens after the bootloader is sent to the device as I wrote earlier.

joooeeel said:
Hi,
Thanks for the suggestions. Unfortunately I cannot boot into recovery, nothing happens when I press volume down + power. Since I cannot start it I cannot use adb so I guess the only option is to flash recovery/stock rom in APX mode. But here is where I run into problem, nothings happens after the bootloader is sent to the device as I wrote earlier.
Click to expand...
Click to collapse
Since you can still use the APX mode you should be able to restore the stock firmware.
From my experience EasyFlash works like a charm. But it has no option to install the APX drivers. You also need to download the stock image from the Thread.
Did a restore to stock just a few days ago.
Looking at your command you did not tell wheelie to install any ROM after the bootloader.

SOLVED After unlocked the bootloader and rooting my Shield, screen will not turn on.

To sum it up, I followed the steps basically to a tee located here > http://forum.xda-developers.com/shi...t-root-nvidia-shield-tablet-lollipop-t2972316
After flashing custom recovery, I rooted through the supersu.zip I copied onto the SD card. I selected "yes" to the option that appeared for it to fix the root. After doing that, the screen on my tablet will not turn on, but the device appears to be on whenever I connect it to a computer. In device manager, it's labeled "APX", with a driver that failed to install.
Give it to me straight doc, can we fix her?
Edit: Issue solved, am in fact a monkey.

Thepiewarrior said:
To sum it up, I followed the steps basically to a tee located here > http://forum.xda-developers.com/shi...t-root-nvidia-shield-tablet-lollipop-t2972316
After flashing custom recovery, I rooted through the supersu.zip I copied onto the SD card. I selected "yes" to the option that appeared for it to fix the root. After doing that, the screen on my tablet will not turn on, but the device appears to be on whenever I connect it to a computer. In device manager, it's labeled "APX", with a driver that failed to install.
Give it to me straight doc, can we fix her?
Click to expand...
Click to collapse
Can you get into fastboot?

mcord11758 said:
Can you get into fastboot?
Click to expand...
Click to collapse
As far as I'm aware, no. Whenever I try to connect the device to my computer, it's detected as an APX device, and I can't see anything on the display.

Hi,
How did you solve this issue, since I'm having the same problem (can't boot after logo firstly, not even fastboot, now won't boot at all).

APX
same here. wont show bootloader, black screen.
but does show up in device manager when connected to computer as "APX".
I can here it turning on/off through the computer when connected to usb, but always black screen on tablet.
am I fckd? i cant seem to get into bootloader
D:\Program Files (x86)\Minimal ADB and Fastboot>adb reboot bootloader
error: device not found

salado said:
same here. wont show bootloader, black screen.
but does show up in device manager when connected to computer as "APX".
I can here it turning on/off through the computer when connected to usb, but always black screen on tablet.
am I fckd? i cant seem to get into bootloader
D:\Program Files (x86)\Minimal ADB and Fastboot>adb reboot bootloader
error: device not found
Click to expand...
Click to collapse
If you can get APX mode then you'll have to work out how to flash via nvflash.
This is what you'd use for the ASUS TF100 when in APX mode and it's likely to be your only way out. Good luck!

salado said:
same here. wont show bootloader, black screen.
but does show up in device manager when connected to computer as "APX".
I can here it turning on/off through the computer when connected to usb, but always black screen on tablet.
am I fckd? i cant seem to get into bootloader
D:\Program Files (x86)\Minimal ADB and Fastboot>adb reboot bootloader
error: device not found
Click to expand...
Click to collapse
To exit USB boot recovery mode ( APX w/o driver installed ), simply press and hold POWER for at least 11 seconds.
kickassdave said:
If you can get APX mode then you'll have to work out how to flash via nvflash.
This is what you'd use for the ASUS TF100 when in APX mode and it's likely to be your only way out. Good luck!
Click to expand...
Click to collapse
The command for flash the SHIELD should be;
Code:
nvflash.exe --bct bct.cfg --setbct --odmdata [OFFSET REMOVED] --configfile flash.cfg --create --bl bootloader.bin --go
Please notice that I have removed the OFFSET required.

xXlAinXx said:
To exit USB boot recovery mode ( APX w/o driver installed ), simply press and hold POWER for at least 11 seconds.
The command for flash the SHIELD should be;
Code:
nvflash.exe --bct bct.cfg --setbct --odmdata [OFFSET REMOVED] --configfile flash.cfg --create --bl bootloader.bin --go
Please notice that I have removed the OFFSET required.
Click to expand...
Click to collapse
I am running in the same problem.
I both the tablet yesterday. Try 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.
Update 2.1 did the same thing. I repeat the steps.
Now I am stuck in APX mode (recognized that way by PC)
Screen is black
Cannot get in bootloader
I can turn on/off (with the sound from pc) by hold power button down and then pressing power & volume+ together. Black screen again.
Nothing is working.... I need help I bought the tablet for my trip to Belgium. I am leaving for the airport in 1 hour !!!

Wicstar said:
I am running in the same problem.
I both the tablet yesterday. Try 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.
Update 2.1 did the same thing. I repeat the steps.
Now I am stuck in APX mode (recognized that way by PC)
Screen is black
Cannot get in bootloader
I can turn on/off (with the sound from pc) by hold power button down and then pressing power & volume+ together. Black screen again.
Nothing is working.... I need help I bought the tablet for my trip to Belgium. I am leaving for the airport in 1 hour !!!
Click to expand...
Click to collapse
did you find a solution?

Motawa88 said:
did you find a solution?
Click to expand...
Click to collapse
I went to the movies on Friday, turned off my tablet before the show, and appear to be in this APX mode now. I've got a replacement (battery recall) LTE 32g US device. I don't know why nVidia would want / need to kill my device remotely as I am believing happened based on all the forum posts, but here I am..
No clue what to do...

How u solved it?

I too have the same problem with APX driver

Are you sure you guys are not pressing the Power and Volume Up buttons as this will boot you into APX.
If your unsure Press and hold the Power button for 15 seconds it will boot up if you have pressed the Power + Volume Up Button, i found this out myself and was totally bricking it till i held the power button in for 15 seconds and watched it come back to live.
Power + Volume Down = Bootloader
Power + Volume Up = APX Mode.

[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