Another bricked one, no bootloader menu, backlight loop - Transformer TF300T Q&A, Help & Troubleshooting

I had JB, rooted, unlocked and stock recovery working just fine. I forget the update file in sd card and accidentally go into recovery mode. Screen went black. Backlight of the screen is going on and off every 30 sec.
Forced to reboot, all white boot logo with small "the device is unlocked" print comes up, after a few seconds screen goes blank, and backlight of the screen goes off and on and off again in a continuous loop. No bootloader menu, no adb no fastboot (tried every combination). I can't even turn this thing off.
My only hope is nvFlash i guess, But no good for TF300s for now.

Related

[Q] So I'm pretty sure my phone is now bricked, can anyone assist?

Well, I am quite certain i have bricked my phone. I was trying to flash CM9 from openrecovery and everything was normal. When the phone rebooted out of OR it stayed on the M logo for quite some time. I figured usually it takes awhile so I let it go. Needless to say, it didn't boot up or do anything, it was stuck. I pulled the battery and tried to put it into recovery mode. at first it looked as if it was going to go into recovery, had the progress bar at the bottom, but then it quickly went blank and the phone rebooted. I tried again. This time it gave me the triangle with the exclamation mark. I tried accessing the recovery option to hard reset and wipe the phone both with and without the SD card by pressing Volume up + Gallery key down + camera shutter. It did nothing. I have tried to access the bootloader, but to my horror, the phone will not go into bootloader mode for me to flash with RSD! No matter what button combination I try the phone just stays on the M logo, it will not go into bootloader mode. This is both with and without the SD card inserted. Battery is/should be 90-100%.
Any suggestions on what I can do at this point? Or is all hope lost? It is a Motorola XT720 (not Motoroi) Singapore model.
I forgot to also mention, when the M logo is on screen, pressing the gallery button turns on and off the flashlight (red light)

[Q] Nexus s stuck on colorful boot up screen

Nothing was done to the phone. It's all stock and bootloader is locked.
Every time I go into the bootloader no options appear, but If I use Nexus Root Toolkit it gives me the options. But when I use it reboots the phone and gets stuck and when I remove the battery and Check to see if it save it, it still lock.
When I try Recovery mode a little android robot pops up and quickly takes me to a blank screen. The keys like the home, back those light up.
I try to flash it but since bootloader is locked everything fails.

TF700 Stuck on Android Logo, Unable to enter Recovery

Folks,
Here is the situation. I have a TF700T on Jellybean with the latest update. I unlocked the bootloader with the ASUS unlock tool. I flashed CWM Recovery and I then wanted to try the Crombi Kit-kat based ROM with f2fs and Overclocked Kernel. I used CWM Recovery to flash that ROM. In the Aroma installer for that ROM I chose to partition using f2fs for external and internal storage. The flash went ok and I booted into the ROM. Here is where the trouble began. I got a message from Android saying that it couldnt decrypt my file system or partition and asked if i wanted to restore the device to stock. I hit yes without thinking too much about it and it rebooted into the Android Logo and it is stuck there !!
I can't shut the device down because it restarts immediately into the white ASUS logo,then pauses for a few seconds, screen blinks, white asus logo again and then the Android Green Robot Screen again with a progress meter underneath it.
I tried holding down the Volume down and power for 10 seconds, the tablets reboots and repeats the process.. I never have an opportunity to enter recovery or wipe. I next tried holding the Volume UP button and holding the power button down for 10 seconds. The tablet buzzed and the screen shut off. I am guessing I am in APX mode.. I tried rebooting again by holding power button down and it does restart but goes into the same cycle, Screen with white ASUS Logo, Screen Blink, White Asus Logo and then Android Green Robot Screen again.. It is stuck in the screen and I cant even shut the tablet down Any idea what is going on ?
kchilaka said:
Folks,
Here is the situation. I have a TF700T on Jellybean with the latest update. I unlocked the bootloader with the ASUS unlock tool. I flashed CWM Recovery and I then wanted to try the Crombi Kit-kat based ROM with f2fs and Overclocked Kernel. I used CWM Recovery to flash that ROM. In the Aroma installer for that ROM I chose to partition using f2fs for external and internal storage. The flash went ok and I booted into the ROM. Here is where the trouble began. I got a message from Android saying that it couldnt decrypt my file system or partition and asked if i wanted to restore the device to stock. I hit yes without thinking too much about it and it rebooted into the Android Logo and it is stuck there !!
I can't shut the device down because it restarts immediately into the white ASUS logo,then pauses for a few seconds, screen blinks, white asus logo again and then the Android Green Robot Screen again with a progress meter underneath it.
I tried holding down the Volume down and power for 10 seconds, the tablets reboots and repeats the process.. I never have an opportunity to enter recovery or wipe. I next tried holding the Volume UP button and holding the power button down for 10 seconds. The tablet buzzed and the screen shut off. I am guessing I am in APX mode.. I tried rebooting again by holding power button down and it does restart but goes into the same cycle, Screen with white ASUS Logo, Screen Blink, White Asus Logo and then Android Green Robot Screen again.. It is stuck in the screen and I cant even shut the tablet down Any idea what is going on ?
Click to expand...
Click to collapse
Your case is very similar this user. Check this post to see if it helps, good luck...:fingers-crossed:
http://forum.xda-developers.com/showthread.php?t=2770727
Thank you !. I let the tablet sit like that for an hour and it got out of the Android Screen and tried booting the bad ROM install at which point I had the opportunity to shut the tablet down. Once I could shut it down, I could start the tablet into recovery and then I flashed the stock rom back from my nandroid backup.. Whew!!
LetMeKnow said:
Your case is very similar this user. Check this post to see if it helps, good luck...:fingers-crossed:
http://forum.xda-developers.com/showthread.php?t=2770727
Click to expand...
Click to collapse
Thanks a lot. It works. :good::good::good:

SGH-i727R Boot Loop Issue & cannot get to Recovery Mode?

Normal boot sequence results in boot loop few seconds after second logo (SAMSUNG) appears, then a brief screen flash (like a thin white horizontal line), then bzzz ... bzzz and so on.
When I try to enter Recovery Mode (hold middle volume & power simultaneously), wait for 2nd logo (SAMSUNG) to appear and release power button, it goes into boot loop before it can reach recovery mode. Specifically, when I release power button, it vibrates again, and goes back to two logo sequence, then a screen flash, the I get the dreaded one second cycle pulse vibrations.
When I try to Boot into Download Mode, the custom OS warning screen appears, I release the power button and within a few seconds it goes into boot loop
I suspect the hardware is fine. Is there any way to revive this by different means?
As background, I had first bootloop issues about a year ago and was able to resolve using the above method. I then upgraded from original ICS to Jelly Bean 4.1.2 which I installed using ODIN. The phone worked fine for like 6 months until this.
If you haven’t guessed, I’m a bit of a newb here.

Blank screen after boot animation

Hey my cell phone suddenly showed me a black screen and he was just lying on the table. It responds to pressing the screen but does not show after booting.
I have already reset the firmware with Odin3, but that did not help either.
The phone was not rooted
I can still get into the download and recovery mode

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