OP has been updated finally with the 4.2.1 factory image. Sorry that took so long. Cheers!!!
OP has been updated finally with the 4.2.1 factory image. Sorry that took so long. Cheers!!!
Just take a peek inside the 4.2.2 archive (e.g., using 7-zip) and you can see the content that will get flashed -- it includes bootloader-grouper-4.18.img.So if i flash the 4.2.2 using the toolkit, will it also update bootloader?
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I have a Nexus 7 2012 model with which I'm having "looping" issues. Note that these are not "boot loops," or at least not in the sense that I understand the term. My N7 tablet boots up normally, but after it begins loading apps and updating notifications, it will momentarily freeze and then reboot. These freezes vary somewhat, but almost always within 90 second to 5 minutes of loading up. Booting into Safe Mode will sometimes give me virtually unlimited uptime, but on other occasions it will freeze/reboot within a minute or two.
I rooted shortly after I bought the tablet but never loaded any ROMs. When I was running stock 4.2.x, my USB port broke, and then later the update to 4.3 zapped my root and TWRP recovery (and without a USB port, I wasn't able to restore root). I recently replaced the USB port (and I've verified it works for both charging and data). However, I'm stuck and need some help.
I initially tried to fix my looping issue with the Nexus Root Toolkit. My initial goal was to just restore root and TWRP and go from there. No matter which of the methods I choose via the Toolkit, I am stuck on 4.3 with the looping behavior continuing. I have also tried to fix this through the ADB method detailed here -- this is more difficult, as I have to race against freeze/reboot countdown, which varies from maybe 90 seconds to as much as 5 minutes. But in both cases, I'm able to complete the Toolkit steps or work through all the ADB commands, but I'm still stuck where I started.
On a couple of attempts, I was able to successfully go through the Unlock, Root + Custom Recovery steps of the toolkit, and twice I have been in TWRP. The second time I was in TWRP, I tried to do a Factory Reset and also a Full Wipe, but when I rebooted the tablet, I was still in my old version of 4.3, with all my apps and the freezing/booting issue. This seems to be a recurring theme with both the Toolkit and ADB methods -- although I'm getting real-time feedback that partitions are being deleted and recreated and that the system is being loaded etc., it doesn't appear that any files or configuration is changed.
It's like every day is Ground Hog day.
I know that you guys can't help me with the Toolkit specifics related to my problem, but at this point I'm just looking for general guidance. Obviously something is seriously hosed (or I'm the worst follower of instructions ever), as nothing seems to be able to change the freeze/looping situation I'm trapped in.
Any ideas?
I haven't had any luck getting any solutions, though a few guys have pointed me to other threads that I'd already seen and followed. I am now thinking that this is a hardware problem, as the key obstacle to a fix appears to be the inability to overwrite or change current system files.and partitions.I am having this exact same issue. Have you, or anyone else, been able to resolve it? I've tried fastboot, I've tried wiping partitions in recovery, I've tried a factory reset in recovery, and none of them actually delete the data or flash new data. Just continuous reboots about 10 seconds after the launcher loads.
Help!
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adb reboot bootloader
fastboot flash bootloader bootloader-grouper-4.23.img
fastboot reboot-bootloader
fastboot -w update image-nakasi-jwr66v.zip
fastboot oem lock
fastboot reboot
adb reboot bootloader
fastboot flash bootloader bootloader-grouper-3.34.img
fastboot reboot-bootloader
fastboot -w update image-nakasi-jrn84d.zip
fastboot oem lock
fastboot reboot
First of all, I am in no way responsible for anything you do to your tablet period.
I have seen a couple of people asking how to return the Nexus 7 to stock after it has been unlocked, rooted and so on, so I figured I would write a quick guide as its super easy to do. Also, please make sure you make a backup of anything you don't want to lose. This is important.
1) Make sure you have your ADB and Fastboot drivers installed and working.
2) Download the factory image for the Nexus 7 here
3) Unzip the factory image into the same directory as your Adb and Fastboot drivers.
4) Plug in your device. With the device on the home screen, type "ADB reboot bootloader" or if your device is off, press and hold both volume keys and press the power button. After holding all three buttons for a couple of seconds, your bootloader should launch.
5) This should reboot you into the bootloader. Now type "fastboot flash bootloader bootloader-grouper-3.34.img"
6) Next type "fastboot reboot-bootloader"
7) Now type "fastboot -w update image-nakasi-jrn84d.zip"
8) Optional: If you would like to relock your bootloader for warranty purposes, make sure you are in your bootloader screen again and type "fastboot oem lock"
9) I don't remember if the tablet automatically reboots at this point but if it doesn't just type "fastboot reboot"
That should do it. You should now be on stock Android 4.1 and ready to send in your tablet for warranty purposes.
Additionally, here is an instructional video courtesy of XDA user SladeNoctis.
I'm not sure what happened but the last thing I did was flash a recovery then a fastboot reboot. After that only Google logo no matter what I do. Actually had to pull back cover off and pull the battery cause it wouldn't turn off any other way
Went back through my terminal session and the exact commands went like this.
./adb reboot bootloader
./fastboot flash recovery ~/Downloads/openrecovery-twrp-2.2.1-grouper.img
./fastboot reboot
thats it.