i accidentally bricked my 7012 as well when trying out custom ROM's. it took me a while just to figure out where to start, and even longer to actually fix the darn thing
so to anyone else having problems, hopefully my experiences will save you a couple of headaches
1. As I understand, the stock android recovery program only accepts signed files. From all my searching I was unable to find a stock 7012 rom restore file, so this option is basically a no-go.
2. You'll need an alternative restore program, like clockwork or KTZ recovery.
3. I personally used KTZ recovery, which can be found on the kyros tablet zone forums(sorry i'm too lazy to search for it right now), Clockwork should work just as well though.
4. Since your tablet is broken(I'm assuming) and you have no access to the android OS, you won't be able to install the recovery through the tablet itself, you'll have to use the ADB interface through your computer.
5. At this point you should have ADB USB drivers installed. If you rooted with superone click you should already have them, otherwise you might have to download them through the android sdk directly.
6. With drivers installed, turn on the tablet while holding down the power and menu keys simultaneously.
7. Device should now be in fastboot mode with blue letters at the bottom of the screen.
8. Install the android sdk(I used version 16). It's easier to use the zip archive and simply extract the sdk folder to the root of your C drive.
9. Open up command prompt.
10. Navigate to your android sdk directory
I renamed my sdk folder to simply "android" and placed it on the root of my C drive, so for me the commands were
cd C:\\
cd android
Then navigate to your platform-tools folder w
cd platform-tools
then run
fastboot devices
if you get a response line of "? fastboot", then it means your tablet was recognized
if you get "waiting for devices", then you most likely have a problem with drivers. again, running superoneclick should install them automatically. otherwise you can get them through the SDKmanager.exe in the android sdk folder. Browse to "extras" and select "Google usb driver package"
so assuming your 7012 has been recognized
place your clockwork/ktz recovery image file in the same platform tools folder
then run
adb flash recovery "insert-name here".img
so if your cwm/ktz file is named "customRecovery.img" for example, your command would be
adb flash recovery customRecovery.img
let it flash
then type
fastboot boot "insert-name here".img
using the previous example, you'd get
fastboot boot customRecovery.img
if the above doesn't work for w/e reason, you can boot into recovery by turning on the tablet while holding down the power and back keys
if recovery is working for you and booting successfully, transfer your ROM to your SD card through your computer
i'd recommend one of the roms on kyros tablet zone, i'm personally using formula 1
the file should be in a .zip format
if you don't have an SD card, it's also possible to transfer files to the tablet directly by using "USB-MS toggle" mode from the recovery itself. this will allow you to access your internal-sd contents directly through your computer, obviously USB must be connected
so transfer your ROM of choice to the tablet through either USB-MS mode, or directly on an sd card
from recovery, select "Flash zip menu", enter by pressing search key, then select "Choose zip from..." depending on your storage medium, and browse to the transfered ROM .zip file. Let it flash, turn off the tablet, and hopefully it'll be working now.
If your tablet is still bricked, don't worry, this happened to me, too - but this time you will need an SD card.
Boot into recovery, go to "Backup-restore", and select "nand backup". you should now have a backup folder of your nand on your sd card
open this on your computer, go into the backup folder, and replace all the .img files(boot.img, system.img, recovery.img, etc) with the .img files from your ROM .zip archive
with all files replaced, put the sd back in your tablet, access recovery mode
go to nand backup/restore
and restore from your sd card
I know this is a very very rough guide. If anyone needs more help please post here explaining your problems and I'll do a more in-depth explanation.
so to anyone else having problems, hopefully my experiences will save you a couple of headaches
1. As I understand, the stock android recovery program only accepts signed files. From all my searching I was unable to find a stock 7012 rom restore file, so this option is basically a no-go.
2. You'll need an alternative restore program, like clockwork or KTZ recovery.
3. I personally used KTZ recovery, which can be found on the kyros tablet zone forums(sorry i'm too lazy to search for it right now), Clockwork should work just as well though.
4. Since your tablet is broken(I'm assuming) and you have no access to the android OS, you won't be able to install the recovery through the tablet itself, you'll have to use the ADB interface through your computer.
5. At this point you should have ADB USB drivers installed. If you rooted with superone click you should already have them, otherwise you might have to download them through the android sdk directly.
6. With drivers installed, turn on the tablet while holding down the power and menu keys simultaneously.
7. Device should now be in fastboot mode with blue letters at the bottom of the screen.
8. Install the android sdk(I used version 16). It's easier to use the zip archive and simply extract the sdk folder to the root of your C drive.
9. Open up command prompt.
10. Navigate to your android sdk directory
I renamed my sdk folder to simply "android" and placed it on the root of my C drive, so for me the commands were
cd C:\\
cd android
Then navigate to your platform-tools folder w
cd platform-tools
then run
fastboot devices
if you get a response line of "? fastboot", then it means your tablet was recognized
if you get "waiting for devices", then you most likely have a problem with drivers. again, running superoneclick should install them automatically. otherwise you can get them through the SDKmanager.exe in the android sdk folder. Browse to "extras" and select "Google usb driver package"
so assuming your 7012 has been recognized
place your clockwork/ktz recovery image file in the same platform tools folder
then run
adb flash recovery "insert-name here".img
so if your cwm/ktz file is named "customRecovery.img" for example, your command would be
adb flash recovery customRecovery.img
let it flash
then type
fastboot boot "insert-name here".img
using the previous example, you'd get
fastboot boot customRecovery.img
if the above doesn't work for w/e reason, you can boot into recovery by turning on the tablet while holding down the power and back keys
if recovery is working for you and booting successfully, transfer your ROM to your SD card through your computer
i'd recommend one of the roms on kyros tablet zone, i'm personally using formula 1
the file should be in a .zip format
if you don't have an SD card, it's also possible to transfer files to the tablet directly by using "USB-MS toggle" mode from the recovery itself. this will allow you to access your internal-sd contents directly through your computer, obviously USB must be connected
so transfer your ROM of choice to the tablet through either USB-MS mode, or directly on an sd card
from recovery, select "Flash zip menu", enter by pressing search key, then select "Choose zip from..." depending on your storage medium, and browse to the transfered ROM .zip file. Let it flash, turn off the tablet, and hopefully it'll be working now.
If your tablet is still bricked, don't worry, this happened to me, too - but this time you will need an SD card.
Boot into recovery, go to "Backup-restore", and select "nand backup". you should now have a backup folder of your nand on your sd card
open this on your computer, go into the backup folder, and replace all the .img files(boot.img, system.img, recovery.img, etc) with the .img files from your ROM .zip archive
with all files replaced, put the sd back in your tablet, access recovery mode
go to nand backup/restore
and restore from your sd card
I know this is a very very rough guide. If anyone needs more help please post here explaining your problems and I'll do a more in-depth explanation.
