I tried updating my nexus 7 to 4.2.1 and i thought everything went okay but now adb doesn't recognize my device in fastboot and i can't boot up my nexus 7 because everything got wiped on my sd card. I can boot into recovery but i can't mount my sd card either. It tells me there is an error. Apparently there is no OS installed. Any help is welcomed.
YoungCorruptionV2.0 said:
I tried updating my nexus 7 to 4.2.1 and i thought everything went okay but now adb doesn't recognize my device in fastboot and i can't boot up my nexus 7 because everything got wiped on my sd card. I can boot into recovery but i can't mount my sd card either. It tells me there is an error. Apparently there is no OS installed. Any help is welcomed.
Click to expand...
Click to collapse
You can boot into the bootloader, and use fastboot commands to reflash the stock Android 4.2.1 OS.
RMarkwald said:
You can boot into the bootloader, and use fastboot commands to reflash the stock Android 4.2.1 OS.
Click to expand...
Click to collapse
Fast boot commands don't work because adb can't recognized my device while in fastboot. I tried "adb devices" and no devices were listed
Sent from my EVO using Tapatalk 2
YoungCorruptionV2.0 said:
Fast boot commands don't work because adb can't recognized my device while in fastboot. I tried "adb devices" and no devices were listed
Sent from my EVO using Tapatalk 2
Click to expand...
Click to collapse
You can't use adb in fast boot . Reboot to the boot loader. If you type 'fastboot devices' in fast boot your phone will show
Sent from my One X using xda app-developers app
I had the same problem.
What version of adb.exe Ade you using?
The latest is dated sometime in November this year. If it's earlier than that, download the SDK from android development site and use newer version of adb.exe
That should fix the issue...
Sent from my Nexus 7 using xda premium
From bootloader use fastboot commands, from recovery use adb commands.
You can't do adb commands in fastboot mode. To do adb commands you either need to be in Android or in a recovery.
Sent from my Nexus 7
Stop... MUFFIN TIME!!!
If you have twrp recovery installed you can boot to recovery and use adb sideload.
So just download a rom on your computer boot to recovery and sideload the rom to your device and then install it.
Not sure if this can be done with cwm though
Sent from my Nexus 7 using Tapatalk 2
Related
I bought a nexus 7 today, rooted it no problems, but i changed the pdi settings to 160 to see if i could get the tablet ui, and now it wont boot fully, i can get into recovery and all but it wont boot past the google splash screen :/ HELP!
Here is stock build.prop for JRO03D, you can try pushing it via adb only other thing I can think of is complete reflash with the factory image
good luck
Is there a way to get the image onto the table in recovery?
Pretty sure you flash that image in fastboot
Sent from my Nexus 7 using Tapatalk 2
yes you use fastboot to flash the image via cmd prompt on your PC
I apologise, I've never had to use ADB or fastboot before, do you just give the file location and then it'll flash it on the tablet?
if you can get to recovery, try plugging the tablet with cable to a pc and mount the storage and move a rom over to it and flash it?
i dont have a nexus 7 yet but that would be my fix for a phone
Beagan said:
Is there a way to get the image onto the table in recovery?
Click to expand...
Click to collapse
adb push
adb is enabled in clockwork recovery. There's no way to mount the "sdcard" in recovery like you can on devices that have a physical SD card device.
I used nexus toolkit worked great!
Sent from my GT-I9100 using xda premium
Hi,
i unrooted, unlocked and installes cwn via nexus 7 utility tool 4.0 and flashed the stock 4.2.1 rom. after reboot the nexus 7 get stuck in the bootloader. if i try to boot via"start" button it says "unable to boot" in the upper left corner. booting into bootloader mode works. booting into recovery mode works too, but the nexus 7 is unable to mount the sd card, the cache and so on. i tryed to reflash the stockrom with the nexus tool but when it says"all done, the nexus will now reboot" nothing happen. i tryed to reflash stock rom with the instruction in this section with adb and fastboot. it get stuck after giving the first command to reboot into fastboot. what can i do to get the nexus to work?
Have you tried the sideload command? Select 'install zip from sideload' when connected to your computer, and from cmd on your computer type adb sideload rom-name.zip
Sent from my Nexus 7
awesome! thx a lot, this worked for me
shockabuku said:
awesome! thx a lot, this worked for me
Click to expand...
Click to collapse
It is easier to click the thanks button below my post
Sent from my Nexus 7
If tried reinstalling the drivers and also using the toolkit. I choose not to flash a recovery, just temporary boot so I can install stuff. I tried using fastboot to boot twrp but all I get is a black screen. Seems like sometimes the driver changes. Never had this problem on 4.2
Sent from my Nexus 7 using Tapatalk 4
biggyk said:
If tried reinstalling the drivers and also using the toolkit. I choose not to flash a recovery, just temporary boot so I can install stuff. I tried using fastboot to boot twrp but all I get is a black screen. Seems like sometimes the driver changes. Never had this problem on 4.2
Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse
Boot your Nexus to the bootloader by first powering down the phone then simultaneously press and hold the volume down and power buttons for 2 seconds. Once in the bootloader connect the USB cable from the Nexus to your computer. Open a command prompt in the folder where you have installed fastboot, type "fastboot devices", and press enter. If you see a deviceID listed, you will be able to flash TWRP with the command "fastboot flash recovery openrecovery-twrp-2.6.0.0-mako.img" (assuming you are installing TWRP v2.6.0.0); otherwise, you will need to reinstall the Nexus drivers.
^The op wants to boot the recovery, not flash it.
Google removed the "fastboot boot" command in the new 4.3 bootloader. The new way to do this is by using the following command:
Code:
fastboot -c "lge.kcal=0|0|0|x" boot recovery.img
Sent using xda-developers app
Chromium_ said:
^The op wants to boot the recovery, not flash it.
Google removed the "fastboot boot" command in the new 4.3 bootloader. The new way to do this is by using the following command:
Code:
fastboot -c "lge.kcal=0|0|0|x" boot recovery.img
Sent using xda-developers app
Click to expand...
Click to collapse
Thank you. Worked fine!!:victory:
Hi I've done stupid thing for myself:
i tried flashing 4.4.2 stock rom. coming from 4.2 (i think) did the usual format data/cache. then rebooted then it loops on google logo. I can go to recovery mode.
So are you rooted? Custom recovery? Looking to flash stock? What bootloader do you have? Ota flash? Fastboot flash?
Sent from my Nexus 4 using XDA Premium 4 mobile app
Hoygl3n said:
Hi I've done stupid thing for myself:
i tried flashing 4.4.2 stock rom. coming from 4.2 (i think) did the usual format data/cache. then rebooted then it loops on google logo. I can go to recovery mode.
Click to expand...
Click to collapse
Read this fourm I just help this user recover from the same thing!!
http://forum.xda-developers.com/showthread.php?t=2663286
lj50036 said:
Read this fourm I just help this user recover from the same thing!!
http://forum.xda-developers.com/showthread.php?t=2663286
Click to expand...
Click to collapse
demkantor said:
So are you rooted? Custom recovery? Looking to flash stock? What bootloader do you have? Ota flash? Fastboot flash?
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
hi i followed all the instruction till CMD and tried typing fastboot
and nothing came up.
This will help
http://forum.xda-developers.com/showthread.php?t=2277112
Sent from my Nexus 4 using XDA Premium 4 mobile app
demkantor said:
This will help
http://forum.xda-developers.com/showthread.php?t=2277112
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I still cant get fastboot up. ive used minimal fastboot and/or SDK Package. also changed the path for environmental variables.
So more info will help, usually the more info you give the faster your issues can be fixed
Are you in bootloader mode? I take it your using windows, what version? Has adb or fastboot ever worked before? When you type
fastboot devices
You get nothing? Can you post a screen shot of terminal, of environmental variables? Are all proper drivers installed? Does anything pop up in device manager when tablet is plugged into USB while in fastboot, recovery or os? Are you using factory USB cable?
Sent from my Nexus 4 using XDA Premium 4 mobile app
demkantor said:
So more info will help, usually the more info you give the faster your issues can be fixed
Are you in bootloader mode? I take it your using windows, what version? Has adb or fastboot ever worked before? When you type
fastboot devices
You get nothing? Can you post a screen shot of terminal, of environmental variables? Are all proper drivers installed? Does anything pop up in device manager when tablet is plugged into USB while in fastboot, recovery or os? Are you using factory USB cable?
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
sorry about that.
im in fastboot mode with power and both volumes pressed. i can also go into recovery mode TWRP v2.5.0.0
also rooted and yes windows 7 64 bit. recovery mode or fastboot mode . it doesnt recognized my nexus.
not sure if i have the right drivers. i cant find any drivers to download for nexus 10
Does anything pop up in device manager when tablet is plugged into USB while in fastboot, recovery or os? - No
and yes im using nexus 10 OEM cable.
i really appreciate the time to help me out with this issue.
Its no problem,
The SDK should have the drivers you need, or you can install the universal drivers made by koush or a number of others as well. Just Google search or a search xda for terms like
Nexus 10 drivers
Universal android drivers
Android naked drivers
You will find many that will work just fine for you
If in cmd you type
fastboot
And you see a list of commands than you know you have it installed
When you type
fastboot devices
And you see your serial number your good, if just a blank line then you need to get tab to communicate, this is most often a driver issue. If you can't find ones that work let me know and I'll link some to you, also you may need to uninstall old drivers and than manually install new ones, windows doesn't always do the best job of picking the correct drivers
Sent from my Nexus 4 using XDA Premium 4 mobile app
demkantor said:
Its no problem,
The SDK should have the drivers you need, or you can install the universal drivers made by koush or a number of others as well. Just Google search or a search xda for terms like
Nexus 10 drivers
Universal android drivers
Android naked drivers
You will find many that will work just fine for you
If in cmd you type
fastboot
And you see a list of commands than you know you have it installed
When you type
fastboot devices
And you see your serial number your good, if just a blank line then you need to get tab to communicate, this is most often a driver issue. If you can't find ones that work let me know and I'll link some to you, also you may need to uninstall old drivers and than manually install new ones, windows doesn't always do the best job of picking the correct drivers
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
finally found the driver that works and now
i get R32D2009DAT
Im assuming thats serial number whats the next step
Google search
Android factory images
Here you will download the correct one, latest manta for the nexus 10
Then extract the contents of the zip
Now if you want to keep custom recovery that's a good idea but if you want KitKat you will need stock or at least update to the newest twrp (as you current one won't flash kk)
So if you want twrp then google search
Twrp recovery manta
And then find the latest image, 2.6.x?
Oh and its a good idea to check md5sum for both the zip from android source and for the recovery image, both will tell you what it should be in download screen and there are many ways to check, just google search
Windows md5
There is both official and none official, I personally use Linux command line and can't recall the name of the program I use for windows off hand
Also note that the following commands will wipe all from tablet, it is good to do this but if there is anything real important back it up first
Now from fastboot, enter these commands
fastboot erase system -w
fastboot erase boot
fastboot erase recovery
Now find the bootloader image you extracted from the android .zip
fastboot flash bootloader nameofbootloader.img
Now if you want stock find the system image
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash cache cache.img
fastboot flash boot boot.img
Now find the twrp recovery image
fastboot flash recovery nameofrecovery.img
Here you can boot to new recovery and install superuser or just boot to pure stock, or if you want one of the many great custom ROMs you can boot to recovery and use adb sideload to flash one
Sent from my Nexus 4 using XDA Premium 4 mobile app
demkantor said:
google search
android factory images
here you will download the correct one, latest manta for the nexus 10
then extract the contents of the zip
now if you want to keep custom recovery that's a good idea but if you want kitkat you will need stock or at least update to the newest twrp (as you current one won't flash kk)
so if you want twrp then google search
twrp recovery manta
and then find the latest image, 2.6.x?
Oh and its a good idea to check md5sum for both the zip from android source and for the recovery image, both will tell you what it should be in download screen and there are many ways to check, just google search
windows md5
there is both official and none official, i personally use linux command line and can't recall the name of the program i use for windows off hand
also note that the following commands will wipe all from tablet, it is good to do this but if there is anything real important back it up first
now from fastboot, enter these commands
fastboot erase system -w
fastboot erase boot
fastboot erase recovery
now find the bootloader image you extracted from the android .zip
fastboot flash bootloader nameofbootloader.img
now if you want stock find the system image
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash cache cache.img
fastboot flash boot boot.img
now find the twrp recovery image
fastboot flash recovery nameofrecovery.img
here you can boot to new recovery and install superuser or just boot to pure stock, or if you want one of the many great custom roms you can boot to recovery and use adb sideload to flash one
sent from my nexus 4 using xda premium 4 mobile app
Click to expand...
Click to collapse
never mind its fixed
you are the man!
Thank you so much!
Nexus 4 running 4.4.2 bootloader version MAKOZ30d
I used Wug's root toolkit to unlock my bootloader but after reboot into fastboot, neither my windows 7 machine nor my linux mint machine will mount the phone without MTP turned on. I can run adb commands while MTP is on but drivers fail to load if mtp is off.. So now I have an unlocked bootloader and am unable to complete the rooting proces..
Any help is much appreciated.
Cheers!
go to settings/storage open 3dots menu /usb computer connection. if nothing is selected that is why your phone doesn't connect. select mtp an problem solved.
if it's not that i cannot help you except suggesting to reinstall android from scratch using wug toolkit.
wasabitobiko said:
Nexus 4 running 4.4.2 bootloader version MAKOZ30d
I used Wug's root toolkit to unlock my bootloader but after reboot into fastboot, neither my windows 7 machine nor my linux mint machine will mount the phone without MTP turned on. I can run adb commands while MTP is on but drivers fail to load if mtp is off.. So now I have an unlocked bootloader and am unable to complete the rooting proces..
Any help is much appreciated.
Cheers!
Click to expand...
Click to collapse
You can't "mount storage" in Fastboot mode.... what exactly are you trying to do?
acejavelin said:
You can't "mount storage" in Fastboot mode.... what exactly are you trying to do?
Click to expand...
Click to collapse
Trying to finish the rooting process by using adb.. by "mount" I mean get access in fastboot from either of my computers. Didn't have this problem with my other N4.. when I plug the phone into my computer while in fastboot and try any adb commands.. I get <waiting for device> nothing... It seems like the adb drivers aren't loading while in fastboot. I'll try to back things out using the toolkit again..
wasabitobiko said:
Trying to finish the rooting process by using adb.. by "mount" I mean get access in fastboot from either of my computers. Didn't have this problem with my other N4.. when I plug the phone into my computer while in fastboot and try any adb commands.. I get <waiting for device> nothing... It seems like the adb drivers aren't loading while in fastboot. I'll try to back things out using the toolkit again..
Click to expand...
Click to collapse
OK, so your fastboot commands are not working, that would likely be a driver issue? If you do
Code:
fastboot devices
and get a result, then keep going, if you don't, use one of the driver options in Wugfresh's toolkit, follow the instructions TO THE LETTER...
If you are just trying to get root and are unlocked, download the latest SuperSU.zip (to your phone preferably) from http://download.chainfire.eu/supersu and openrecovery-twrp-2.7.0.0-mako.img then start phone in Fastboot mode and enter:
Code:
fastboot boot openrecovery-twrp-2.7.0.0-mako.img
this will start TWRP on your device WITHOUT flashing it.
If the SuperSU zip file is on your phone, just use TWRP's Install button and navigate the file and flash it, then reboot and enjoy.
If the SuperSU zip is on your PC, then in TWRP go to Advanced, and start ADB Sideload, give it a few seconds for it to be recognized by your PC, you should be able to enter
Code:
adb devices
and get a result of SIDELOAD back, then enter:
Code:
adb sideload UPDATE-SuperSU-v1.94.zip
Or whatever the current SuperSU zip file is named. Then reboot and enjoy, your rooted!
Remember that adb commands only work in android and custom recovery NOT in fastboot mode.
Sent from my Nexus 4 using XDA Free mobile app
Ok.. If I can't run adb commands from fastboot, how do I enter that command in fastboot?
Sent from my Nexus 4 using XDA Free mobile app
wasabitobiko said:
Ok.. If I can't run adb commands from fastboot, how do I enter that command in fastboot?
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
ADB sideload is a special mode that recovery can be placed into, it only allows the "sideload" command to be used. Fastboot is different, it uses the fastboot.exe program and fastboot mode on the android device to allow a limited list of features to be used.
I don't know what you are using for a rooting guide, but basically the end result is to flash SuperSU via recovery, that is all that is really needed.
Sent from my Nexus 4 using Tapatalk
Well, basically if your boot loader is unlocked and you have a custom recovery installed just download the latest superSU zip to your SD card. Reboot into recovery, install SuperSU, reboot. Alas, you're rooted.
Sent from my Nexus 4 using XDA Free mobile app
That's the problem.. No custom recovery installed.. Still working on the driver issue.
Sent from my Nexus 4 using XDA Free mobile app
wasabitobiko said:
That's the problem.. No custom recovery installed.. Still working on the driver issue.
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
If you unlocked your bootloader your drivers should be working fine. If you rebooted your phone now you'd see it works fine. Next step in rooting is to flash custom recovery. Download a custom recovery, I recommend latest version of TWRP, then flash the recovery image. 'fastboot flash recovery recovery.img' (replace recovery.img with whatever .img file you are flashing.
Once custom recovery is installed you can boot into it to flash supersu. If using TWRP it will prompt you to root when you reboot it.
Thanks.. And please don't take offense to this but re-read the thread. Ever since I used wug's rootkit to unlock the bootloader, neither my pc nor linux machine will recognize the Nexus 4. When I plug it in I get a usb error "device failed to load".. When I look at the device mgr it's listed as unknown device. Btw.. I've restarted both my phone and machine multiple times to no avail.
Sent from my Nexus 4 using XDA Free mobile app
Unknown device? Youve probably installed no or wrong fastboot drivers.
Sent from my Nexus 4 using XDA Free mobile app
wasabitobiko said:
That's the problem.. No custom recovery installed.. Still working on the driver issue.
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
Google tool 15 second adb xda
Sent from my Nexus 5 using XDA Free mobile app
UPDATE: It looks like the micro usb port on the phone is fried... had been charging fine until today. I'll keep you posted. Thanks for all the help. Does anyone know if this is a relatively easy fix?
Update: Fixed..
Replacing the usb port on the Nexus 4 is super easy. Thanks for the help guys. Everything's working and root has been achieved.