[Q] PowerON + VolUP + VolDown does not work on my N7 3G - Nexus 7 Q&A, Help & Troubleshooting

If powered off, pressing together PowerON + VolUP + VolDown does not power on my N7 3G to bootloader. It gives no response.
After releasing this combination, I have to long press PowerON to power on the N7 3G, as it cannot power on properly.
However, PowerON + VolDown does work, this combination boots my N7 3G to bootloader. It is strange...
Also, after flashing recovery, I tried to make it permanent by
Code:
mv recovery-from-boot.p recovery-from-boot.bak
However, it said "no such files".
I tried to "ls" and could not find anything like "recovery-from-boot.p" and "recovery-from-boot.bak"
But the recovery does stick...not sure why
(I used recovery-CWM-touch-6.0.2.3-tilapia.img)

human-being said:
If powered off, pressing together PowerON + VolUP + VolDown does not power on my N7 3G to bootloader. It gives no response.
After releasing this combination, I have to long press PowerON to power on the N7 3G, as it cannot power on properly.
However, PowerON + VolDown does work, this combination boots my N7 3G to bootloader. It is strange...
Click to expand...
Click to collapse
AFAIK, there is no such button combination Pwr+Vup+Vdwn.
What is happening is that you are putting the tablet into APX mode with Pwr+Vup
Once it goes into APX mode, it takes 13 sec of holding Pwr down continuously to cause a reset to occur. It takes another 3-5 seconds after this before the bootloader splash screen shows up.
If you continue to hold down the power button, and press Vdwn within 1 second (be ready for it!) of the bootloader splash screen (B&W Google logo in center of screen + unlocked padlock image at bottom if the bootloader is unlocked) appearing on the screen, the tablet will go to fastboot mode.
If you miss that short-lived opportunity the bootloader will attempt to boot the image in the boot partition (LNX); which is to say: a normal OS boot.
In general you can always force a reboot by holding the power button down long enough (no matter what mode the tablet is in!) - and if you have Pwr+Vdwn pressed within one second of that bootloader splash screen appearing, the bootloader will go into fastboot mode rather than attempting a normal boot.
[REF] Nexus 7 Button Combinations

bftb0 said:
AFAIK, there is no such button combination Pwr+Vup+Vdwn.
What is happening is that you are putting the tablet into APX mode with Pwr+Vup
Once it goes into APX mode, it takes 13 sec of holding Pwr down continuously to cause a reset to occur. It takes another 3-5 seconds after this before the bootloader splash screen shows up.
If you continue to hold down the power button, and press Vdwn within 1 second (be ready for it!) of the bootloader splash screen (B&W Google logo in center of screen + unlocked padlock image at bottom if the bootloader is unlocked) appearing on the screen, the tablet will go to fastboot mode.
If you miss that short-lived opportunity the bootloader will attempt to boot the image in the boot partition (LNX); which is to say: a normal OS boot.
In general you can always force a reboot by holding the power button down long enough (no matter what mode the tablet is in!) - and if you have Pwr+Vdwn pressed within one second of that bootloader splash screen appearing, the bootloader will go into fastboot mode rather than attempting a normal boot.
[REF] Nexus 7 Button Combinations
Click to expand...
Click to collapse
Thanks for point this out.
It is strange that many tutorials which I read are having instructions saying this combination can bring your N7 to bootloader. That's why I got confused.

Related

Stuck on Google logo boot screen -- Bricked??

I unlocked the bootloader and flashed a custom recovery. I then rebooted the device. Now it is stuck at the bootloader (white Google logo on black background) and I can't get it to do anything else. I've rebooted it a bunch of times including with the vol + and vol - buttons held down to no avail. I've also let the battery run out and then tried to boot it up again and the same thing happens. adb nor fastboot see the device and it doesn't show up in the logs on my machine (Mint 13) as coming online at any time.
Most of the times I reboot it with the power switch it reboots to the Google logo even without me letting go of the power button. Sometimes I can get it to fully power off but I haven't figured out what combination of vol keys and reboot does that.
Anyone have any ideas what could be wrong? Any help would be much appreciated!
You are not bricked if you can still get into the bootloader.
Download the factory image from here, and flash it with fastboot. If you don't know how to do that, read this thread.
I wish I could get fastboot to see it then I could definitively flash that img.
I can't get into the bootloader and can't get fastboot or adb to see it. It's stuck at the Google logo now and when i hold the power key it reboots back to the Google logo with the unlock logo at the bottom.
Thanks for the help
You've tried holding volume down+power for 10+ seconds? That should power off the device, then hold both vol up+down down and power up
Ya I've tried to hold vol + and power for 10+ seconds and it reboots back to the Google logo even if I don't off the power key. Same happens with all the other combinations of keys being held with the power button. I can't get it to turn off now unless I let the battery die
Press and hold power till screen goes black. Then quickly press power+volume down and HOLD.
Sent from my Nexus 7
Tried that and still stuck at the Google logo. I have to go to work for a couple hours and then will hack on it when I'm back. Hope I don't have to deal with Googles rma process seeing how disorganized the rest of that company is
Sent from my HTC one s
No luck with any button combos but the vol + and power actually turned it off. All out of ideas over here. I'm thinking it really is bricked
I'm in the same spot. I can get it into recovery occasionally but once there it locks up after trying to flash or clear the cache.
I'm wondering if a contributing issue is CMR v6.0.0.6? I updated it from 6.0.0.4 that was running fine. But no fastboot or adb so that is doubtful.
This is frustrating and not a great start with this N7.
thank you
giveen said:
Press and hold power till screen goes black. Then quickly press power+volume down and HOLD.
Sent from my Nexus 7
Click to expand...
Click to collapse
this worked. you have to be fast. as soon as screen goes black release power button then quickly, very quickly repress along with vol up and down.
You will still be able to get into the bootloader! Force kill the tablet by holding the power button for ages. Then hold volume up and volume down and the power button together, which will boot to fastboot.
It looks like a CWM bug as I feared. Anyone in the same boat try here - http://forum.xda-developers.com/showthread.php?t=1782932
Nothing has worked and I've literally tried everything that those three buttons can do. Thanks again for all the help guys. Had a great time trying to resurrect it but guess it's time for it to go back home
Just as I suspected. Google puts out buggy junk once again.
I just wanted to report a similarly event. I have a rooted, unlocked Nexus 7, with TWRP recovery. I have previously rebooted without issue. Tonight I booted into bootloader mode to check something and the hit power button to choose start. I got stuck on the boot logo. After finding this thread, I started with the simplest combination and held power button until screen went dark, then added volume down and once again in bootloader. This time choosing start led to a regular system boot. It's as if the device froze and needed a hard reboot.
Sent from my SCH-I535 using Tapatalk 2
I was attempting to boot into recovery and kept getting the 'Google' logo (I am unlocked/rooted with twrp recovery). I wasn't aware that one had to be plugged in via usb in order to *not* hang....
Any way around this?
Once I plugged it in and attempted to boot into recovery it worked fine.
I had a similar issue after using the Nexus Root Toolkit to flash to nakasi 4.2 with CWM recovery - just got stuck on the nexus boot screen, flashing in a loop for over 15 minutes.
I ended up powering down the device, holding power for about 5-10 seconds - then QUICKLY holding both the power and volume up+down keys, it then went into the fastboot screen.
After it was there, plugged it into my PC.
Now, this should work for you - assuming you have all the fastboot/usb driver stuff installed.
I extracted the contents of nakasi-jop40c-factory-6aabb391.tgz into the same directory as the fastboot.exe provided by WugFresh with his Nexus Root Toolkit (google search or xda search for this if you dont have it, i dont think i can post links due to my low postcount) - typical filepath: C:\Program Files (x86)\WugFresh Development\data
By the files in there, I mean drilling down inside the tgz to where the image files were inside so that files like bootloader-grouper-4.13.img, image-nakasi-jop40c.zip etc were extracted into the directory and sitting alongside the fastboot.exe - NOT in a subfolder.
Once its all here, running flash-all.bat (this is provided by google in the nakasi-jop40c-factory-6aabb391.tgz) from the command line or by double clicking on it from explorer should kick off the process. After about 2-3 minutes, it was complete, and my Nexus then booted up within about 3 minutes after that.
Also worth noting, device remained unlocked, but I lost root/root binary

[SOLVED] "Downloading... do not turn off device" Help!

Before anyone links me to different threads, the device this is happening to does work, it is still a big concern of mine though
My problem is that when I press the Power and Volume up buttons to start up my tablet, instead of getting all of the normal options (Restart boot loader, Recovery mode) I get a screen that says "Downloading... Do not turn off target" and I'm stuck on start (Volume buttons do nothing) but start still boots my device and it boots like normal without pressing any volume buttons
If it helps, it started doing this after a crash which my have done something to the firmware (But I'm not the smartest guy on this site)
My device is stock but rooted with an unlocked boot loader
2haloes said:
Before anyone links me to different threads, the device this is happening to does work, it is still a big concern of mine though
My problem is that when I press the Power and Volume up buttons to start up my tablet, instead of getting all of the normal options (Restart boot loader, Recovery mode) I get a screen that says "Downloading... Do not turn off target" and I'm stuck on start (Volume buttons do nothing) but start still boots my device and it boots like normal without pressing any volume buttons
If it helps, it started doing this after a crash which my have done something to the firmware (But I'm not the smartest guy on this site)
My device is stock but rooted with an unlocked boot loader
Click to expand...
Click to collapse
On my N10, Power+Volume Down button will put it into "Downloading" mode and I have to press Power+Both Volume Up and Down at the same time to enter normal bootloader mode.
xIsei said:
On my N10, Power+Volume Down button will put it into "Downloading" mode and I have to press Power+Both Volume Up and Down at the same time to enter normal bootloader mode.
Click to expand...
Click to collapse
Well this makes me feel dumb, thanks for the answer

Galaxy S4 (i9505) boot problem

Hello,
I create a new thread because all "hard/soft bricked" topic are not the same as me.
I explain, my sister give me a galaxy S4 (i9505 variant) who has fell into the water, the eMMC seems corrupted.
The phone has "boot order" problem:
- If i try to boot normaly (just pressing power button), the phone boot in recovery mode
- If i try to boot while pressing vol down + home + power, the phone boot in "normal mode" (android seem not damaged)
- If i try to boot while pressing vol up + home + power, i show the "samsung galaxy s4" splash screen and the phone reboot in recovery mode
The only way for me to start in download mode is to boot android (using vol down + home + power) and using ADB with "adb reboot download".
I've tryed to flash pit, rom (who is stock rom i9505XXUHOF2) and trying "bootloader update" option of odin, nothing change, the "boot order" is always wrong !
I'm not sure, so i think it's Qualcomm firmware who manage the "boot order", if yes, how can i redefine it?
If no, do you have some informations/solution that can help me to have the phone working "normaly"?
Thank you in advance for your reply.
Kev
Try this: uncheck everything in Odin except f.reset time, flash stock rom, remove USB cable from the phone, remove battery, wait 5 seconds, replace battery, boot into recovery, perform factory wipe, remove battery, try to get into download mode again.
Do the volume buttons work when the phone has booted into android?
Hi audit13,
Thx for your reply
I've tryed what you suggest so boot order is always wrong.
Volume buttons work fine (i need them to boot android).
The problem isn't to get the download mode, so key combinaison to boot method, before phone feel water, keys combinaison was:
power button => boot android
vol down + home + power => download mode
vol up + home + power => recovery mode
And after feel the water:
Power button => recovery mode
Vol down + home + power => android boot
Vol down + vol up => download mode
If it can help, while phone is shutdown and charging, the phone vibrate every 3 seconds and didn't charge, if i just press vol+ and vol- keys during 2~3 seconds, the battery logo appear and the phone start to charge. A second thing i've see, when i'm on android, if i use the "reboot" function, the phone reboot in recovery mode.
It seem that the bootloader didn't boot on the good partition.
I've see an option in odin v3.10.7 called "auto start" and can take value from 1 to 8 (or nothing), do you think this can be a setting that allow user to define the partition number used to start?

Help! Stuck on black screen and cannot get to fastboot

I tried unrooting my 6T and something went wrong. Now when it boots it shows the bootloader unlocked warning then goes to black screen and stops. It will randomly vibrate when I press the screen or the power button. My computer doesn't recognize it and I can't even seem to be able to turn it off completely. The only thing I can get it to do is reboot by pressing and holding the power and volume up buttons.
Any advice on how I can force it into fastboot or get my computer to recognize it so I can working on it?
roblpetty said:
I tried unrooting my 6T and something went wrong. Now when it boots it shows the bootloader unlocked warning then goes to black screen and stops. It will randomly vibrate when I press the screen or the power button. My computer doesn't recognize it and I can't even seem to be able to turn it off completely. The only thing I can get it to do is reboot by pressing and holding the power and volume up buttons.
Any advice on how I can force it into fastboot or get my computer to recognize it so I can working on it?
Click to expand...
Click to collapse
Keep pressing simultaneously volume up , volume down and power button all three of them until you get the fastboot screen.
It maybe takes a while...
roblpetty said:
I tried unrooting my 6T and something went wrong. Now when it boots it shows the bootloader unlocked warning then goes to black screen and stops. It will randomly vibrate when I press the screen or the power button. My computer doesn't recognize it and I can't even seem to be able to turn it off completely. The only thing I can get it to do is reboot by pressing and holding the power and volume up buttons.
Any advice on how I can force it into fastboot or get my computer to recognize it so I can working on it?
Click to expand...
Click to collapse
like the first answer:
hold vol up, vol down and power butten as long as the phone boots into fastboot mode and flash fastboot Rom OR
hold vol up and vol down for about 5-6 seconds, and plug your phone to your computer. if it gets recognized (with typical sound of windows) try msm tool. And be sure you have the qualcomm driver installed.

Fix bootloop Galaxy Tab A 10.1 [SM-T510]

Hi, my device is boot-looping forever. I cannot enter recovery (I have TWRP installed). I cannot even switch it off.
What I have tried:
- normal switch off through power button (device is not switching off). It always restarts itself
- reboot to recovery (Power + Vol Up)
- reboot to bootloader (Power + Vol Down)
- force hard reset (Power + Vol Down for 7 seconds, then Power + Volume Up)
None is working.
Can I enter the recovery, maybe issuing some commands from a computer?
Any other option I could try?
Thanks!
andreapier said:
Hi, my device is boot-looping forever. I cannot enter recovery (I have TWRP installed). I cannot even switch it off.
What I have tried:
- normal switch off through power button (device is not switching off). It always restarts itself
- reboot to recovery (Power + Vol Up)
- reboot to bootloader (Power + Vol Down)
- force hard reset (Power + Vol Down for 7 seconds, then Power + Volume Up)
None is working.
Can I enter the recovery, maybe issuing some commands from a computer?
Any other option I could try?
Thanks!
Click to expand...
Click to collapse
No, the PC won't help. The trick is to hold power and vol down and as soon as the screen blanks, switch from VOL down to up, while keeping power button pressed. You have to be quick when switching or it will just bootloop again. And the cable shouldn't be plugged in.
Thanks, this helped. I recovered from the bootloop.
Hi, I'm stuck in bootloop too. The fix above isn't working for me. Could somebody discribe the process a bit differently please? Maybe I'm doing it wrong? What exactly is the time to switch from volume down to up?
My bootloop shows the Samsung logo then a warning about unlocked bootloader with prompt to press power and then the Samsung bootlogo again. Inbetween the screen turns of for a few seconds.
I was able to go to download mode by connecting the tablet to my pc and pressing vol + and - at the same time. Then I installed the nexus rom by Magendanz. Made a factory reset and format data in twrp. Everything is fine now.

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