Oh man. I was trying to root my Xoom and followed the directions here: http://wiki.cyanogenmod.org/wiki/Motorola_Xoom_(Wi-Fi):_Full_Update_Guide#Method_via_ROM_Manager
I pushed the vol - button with the power button and got "starting fastboot support" with the Red M logo.
I opened a cmd window in win 7 and got to the ADB folder and did the "ADB devices" command.
It didn't list my Xoom so i looked down and the screen was black so i unplugged it and tried to restart but it won't start...nothing...nada...zip.
Have I bricked it?
EDITED TO ADD: i found the problem...it just ran out of battery. I plugged it in and it's fine.
Word of advice, NEVER do anything to your device(s) without a fully charged or at the minimum 70% battery, just incase things get fubar'd.
Sent from my Galaxy Nexus
ATT motorola backckflip .gray. I dont know what OS it was running when bricked. boots to white screen, black moto logo. .button configuration POWER+CAMERA does NOT work.If computer does finally find it , its unknown device. ADB CANNOT find phone.USB debugging seems to be turned OFF inside the phone..The phone WILL let me use button config. J+D+POWER and boots into a blue screen. bottom left corner of screen Bootloader USB Init... From there i m stuck .. the POWER button by its self changes screens from Bootloader USB Init... to Power key reset .If any one can help i appreciate I have looked every where I know to look and every post i have found says MAKE SURE USB DEBUGGING IS ON.. .help needed please ..thanks
Hi All:
First-time poster here. I searched the forums but could not find an answer to my problem.
I want to root my A700 and install a custom ROM but I can't get the bootloader unlocked. I have followed the instructions from this post but can't get past the first step. ADB definitely recognizes my device [adb devices] by returning the correct s/n. When I enter [adb reboot-bootloader] my tab reboots but then hangs on the green Acer logo and goes no further. Any attempts to use ADB result in a "waiting for device" message. My only option is to power off by holding the power button then reboot normally.
Here's my device/PC info:
A700:
Android version: 4.1.1
Kernel version: 3.1.10+
Image version: Acer_AV051_A700_RV18RC01_PA_CUS1
Build Number: Acer_AV051_A700_1.052.00_PA_CUS1
PC:
Windows 8 Pro 64bit
Android SDK 64 bit (I also tried 32bit with no luck)
I have rooted devices before so I am not totally new to the process, but no expert either! Any thoughts?
Thanks in advance for any advice/info shared!
Note: Had to use Acer USB driver for ICS. There was no USB driver for JB. Could that be the problem?
Perhaps try to reboot into bootloader manualy. For this first switch off your device, then press power button and volume (-) together. As soon as the tab vibrates, release the power button and switch the screen lock two or three times. Then you should get into the bootloader mode and can try to use the adb commands. Of corse, with a connected usb cable.
Sent from my A700 using xda app-developers app
georgepcde said:
Perhaps try to reboot into bootloader manualy. For this first switch off your device, then press power button and volume (-) together. As soon as the tab vibrates, release the power button and switch the screen lock two or three times. Then you should get into the bootloader mode and can try to use the adb commands. Of corse, with a connected usb cable.
Sent from my A700 using xda app-developers app
Click to expand...
Click to collapse
Good thought but no luck.
Thanks, though.
After rebooting with "adb reboot bootloader" you should be in the bootloader, and in fastboot mode. Try issuing "fastboot devices" after rebooting.
Edit: Just tried the unlock guide from that thread, and with the ICS driver from Acer. Getting the driver to install was way worse than unlocking the bootloader (many "installations" that didn't create any files for whatever reason).
After ADB recognized my tab, I was able to follow the guide up to the "flash recovery" part.
- with "adb reboot-bootloader" you should land in the bootloader. It only shows the Acer logo and some very small written things in the upper-right corner;
- from here on you need to use fastboot: "fastboot oem unlock". Typing "fastboot devices", as I said before, works just like "adb devices";
- the whole unlocking procedure is very frustrating, because the instructions are so small and the timeout so fast. If I'm not mistaken, you need to choose with VOL- and confirm with VOL+.
PS: pmrmx was faster
rgkjr1 said:
Hi All:
First-time poster here. I searched the forums but could not find an answer to my problem.
I want to root my A700 and install a custom ROM but I can't get the bootloader unlocked. I have followed the instructions from this post but can't get past the first step. ADB definitely recognizes my device [adb devices] by returning the correct s/n. When I enter [adb reboot-bootloader] my tab reboots but then hangs on the green Acer logo and goes no further. Any attempts to use ADB result in a "waiting for device" message. My only option is to power off by holding the power button then reboot normally.
Here's my device/PC info:
A700:
Android version: 4.1.1
Kernel version: 3.1.10+
Image version: Acer_AV051_A700_RV18RC01_PA_CUS1
Build Number: Acer_AV051_A700_1.052.00_PA_CUS1
PC:
Windows 8 Pro 64bit
Android SDK 64 bit (I also tried 32bit with no luck)
I have rooted devices before so I am not totally new to the process, but no expert either! Any thoughts?
Thanks in advance for any advice/info shared!
Note: Had to use Acer USB driver for ICS. There was no USB driver for JB. Could that be the problem?
Click to expand...
Click to collapse
After the ADB reboot-bootloader, there should be some really tiny white type in the upper left corner of the green logo screen.
This is when you type "fastboot OEM unlock" then volume +, then volume -
The tiny type should change. Forever after you will have a tiny message up there about the bootloader is unlocked.
smirneger said:
After rebooting with "adb reboot bootloader" you should be in the bootloader, and in fastboot mode. Try issuing "fastboot devices" after rebooting.
Edit: Just tried the unlock guide from that thread, and with the ICS driver from Acer. Getting the driver to install was way worse than unlocking the bootloader (many "installations" that didn't create any files for whatever reason).
After ADB recognized my tab, I was able to follow the guide up to the "flash recovery" part.
- with "adb reboot-bootloader" you should land in the bootloader. It only shows the Acer logo and some very small written things in the upper-right corner;
- from here on you need to use fastboot: "fastboot oem unlock". Typing "fastboot devices", as I said before, works just like "adb devices";
- the whole unlocking procedure is very frustrating, because the instructions are so small and the timeout so fast. If I'm not mistaken, you need to choose with VOL- and confirm with VOL+.
PS: pmrmx was faster
Click to expand...
Click to collapse
pmrmx774 said:
After the ADB reboot-bootloader, there should be some really tiny white type in the upper left corner of the green logo screen.
This is when you type "fastboot OEM unlock" then volume +, then volume -
The tiny type should change. Forever after you will have a tiny message up there about the bootloader is unlocked.
Click to expand...
Click to collapse
Unfortunately, the problem is that the little white text never appears - that's where it hangs - the screen is completly blank except for the green Acer logo. And if I try to enter "fastboot devices" I simply get another adb prompt (nothing else - it just jumps to a new line.) If I enter "fastboot oem unlock", adb returns "<waiting for device>" and then goes nowhere. All the while, for both commands, the tab is stuck on the Acer logo.
rgkjr1 said:
Unfortunately, the problem is that the little white text never appears - that's where it hangs - the screen is completly blank except for the green Acer logo. And if I try to enter "fastboot devices" I simply get another adb prompt (nothing else - it just jumps to a new line.) If I enter "fastboot oem unlock", adb returns "<waiting for device>" and then goes nowhere. All the while, for both commands, the tab is stuck on the Acer logo.
Click to expand...
Click to collapse
You probably need to install adb USB drivers ( android universal USB driver I think which is different than the Acer USB driver ). While adb will work when tablet is in USB debugging mode, once it rebooted your PC can't communicate with it anymore that's why its waiting for the device.
Sent from my A701 using xda app-developers app
hey_joe said:
You probably need to install adb USB drivers ( android universal USB driver I think which is different than the Acer USB driver ). While adb will work when tablet is in USB debugging mode, once it rebooted your PC can't communicate with it anymore that's why its waiting for the device.
Sent from my A701 using xda app-developers app
Click to expand...
Click to collapse
Thanks, hey_joe. I actually already tried that but decided to try again. This time it worked! I don't know what I did differently but bootloader is now unlocked!
Thanks, All!!!
Tablet ubislate 9ci hanging on bootloading
Dear sir/madam, I am new to this forum. I purchased a new tablet Datawind Ubislate 9ci. It is a 9 inch no-bluetooth tablet.
>Details:
>*.Android 4.1.1
>*.Rock chip RK2928
>*.KERNEL linux version 3.0.36 i was trying to install CWM through mobile odin and ROM manager but my tablet was not supported so i downloaded build.prop editor from google play and changed it to some other cwm recognizable model viz. Samsung, nexus etc. When i was doing the above mentioned procedure, suddenly my tablet is coming up to bootloading and hanging there only and not opening i tried to go to recovery by pressing power and vol but i am not getting recovery menu, i also tried to hard reset by pressing reset with a needle at the back but all in vain again hanging on bootloading i also tried press and hold power & vol- and several other combinations , all in vain so kindly help me and guide me Thank you
Hello there. First of all thank you for your support. I'm here because I have the same problem as OP, but first a little context.
I have already rooted my A700 before, without any difficulties. But after a crash, I restored it to factory and tried to redo the whole procedure.
So, here I am, USB driver installed (I had to modify android_winusb manually for windows to finally accept the drivers), adb up and running, adb reboot-bootloader executed and...
Acer screen, no text, just like the OP. And a yellow "Fastboot" device in my Device Manager window. So I'm stuck here. I've tried to uninstall/reinstall the google USB drivers to no avail, unlike OP. I can access the Acer recovery with the reboot recovery prompt, but I'm not confident enough to ignore the step in this tutorial.
Additional precisions : when the device is stuck with the Acer Logo (without text) trying to use a fastboot prompt (like oem unlock) only gives me the <Waiting for device> message.
I could use the Acer recovery to install a rom from external storage, but I'm unsure if it's a good idea to NOT use CWM or TWRP
Thank you, I'm starting to miss Android 4.4 (yeah, because the Acer update manager give an error 400)
Update : I did manage to access fastboot. Just as I had to modify android_winusb with the PID of my tablet when it was running, I also had to edit the file with the PID of the tablet waiting in fastboot. I didn't noticed they were different.
I have tried just about everything I can find to fix my Nexus 7. When powered on it shows the Google logo and hangs there. I have checked the battery connection, checked the other connections that are visible when the cover is taken off and everything is ok. I can boot to the fastboot mode. I plug it in my computer and it loads the drivers. I can a cmd line command "fastboot Devices" and it shows that my device is visible. Then I can enter the command "fastboot oem unlock. the tablet asks for the yes or no question i use the volume up to say yes and the cmd line shows unlocking and erasing but the tablet freezes and nothing happens (for hours). I then hold the power button and shut off the tablet. the command line then says failed because of to many links.
The laptop has not been rooted, this is a bone stock Asus nexus 7 2013.
I am attaching a photo of the fastboot mode screen.
My question is...I am beating a dead horse is my nexus 7 bricked permanently.
I think the problem is not being able to enable USB debugging. Is there a way to enable USB debugging when so can't get into systems in the tablet?
Thanks for the help. if you have any questions please let me know
MWGW
##Edit: The reason I'm posting here is cos of the fact I typed my phone name in the search bar and nothing came up.
##If there's no category for it, I can't really post there :/
Hey,
Yesterday, I (foolishly) decided to unlock my bootloader on my Alcatel OneTouch Pop Star. I plugged it into my laptop, changed the settings for the command "fastboot oem unlock" to work, then put the command in on my bootloader command prompt. I pressed the volume up button, and I got an "Unlock Success, returning to bootloader in 3 seconds..." or something similar to that. I tried to flash a CWM img so I could install SuperSU (couldn't find one specifically made for my device so I used the same one that worked last time on my friend's phone, it was cwmr_v5.5.0.4), but it didn't work. So I decided to do "fastboot reboot" and like the idiot I was, forgot to flash a ROM. Now, my phone boots to the:
Alcatel OneTouch
Powered by Android
screen, but then restarts. The most I've gotten it to do was display the battery charging screen, but that's about it. If I plug it into my computer, it detects the USB, makes the USB connected noise, then makes the disconnected one as the phone boots up so it can charge. I can't boot into recovery with any combo, and I can't do it though adb as it just says <waiting for device> or error: device 'null' not found. Any chance I can repair it without taking it to the store? I can't really afford to pay repair charges or anything, so it would be preferable if I could do this without. Thanks.
I'm trying to get pass mi screen pinlock but for Alcatel One Touch pop star what do I do first