Friday, February 5, 2016

Install TWRP with Android System Recovery (3e)

Hello,I'm trying to install TWRP.Tablet is General Mobile E-Tab4.

My friens ask me if I can save his tablet.It stucks at General Mobile animation.I'm going to install TWRP then install ROM using TWRP.

In every forum that explains "How to install ROM for GM E-Tab4",they install TWRP using some applications.(I can't open Android and install some apps.)

I have to install TWRP using Android System Recovery (3e).

I tried some methods while my device on Android system recovery (3e):

1 - I tried ADB Shell.
HTML Code:

C:\platform-tools>adb shell
error: closed

Unable to connect device with "adb shell" command and manage device.

2- I tried Fasboot.This is what TWRP offcial website says:
Quote:

Open "Usb Debugging" then type this:

->adb reboot bootloader

You should now be in fastboot mode. Download the correct image file and copy the file into the same folder as your adb and fastboot binaries. Rename the image to twrp.img and type:

->fastboot flash recovery twrp.img

Reboot the system:

->fastboot reboot
When I type "adb reboot bootloader" tablet restarts normally and stucks on animation again.

I skipped first code because I think I was in Bootlader already so don't need to type that.So typed next code in recovery mode.

But Fastboot doesn't see my device and stucks here.
HTML Code:

C:\platform-tools>fastboot flash recovery twrp.img
< waiting for any device >

To be sure,I typed "fastboot devices" and no devices found.

3 - I tried "adb sideload twrp.zip" command to install TWRP.This method is almost working.Recovery screen changed and says something like "Installing Packages".Then suddenly gives an error "Installation aborted.".I think Android System Recovery (3e) allows only verified packages.I found something about editing that twrp.zip to pass that verification successfully.Edited some scripts in that .zip file but same error.Battery was >10 then I charged to 90.Still same.Here is the computer output:

HTML Code:

C:\platform-tools>adb sideload twrp.zip
loading: 'twrp.zip'
sending: 'twrp.zip'  100%
C:\platform-tools>

Wierd thing is ADB sees my device,Fastboot doesn't.

HTML Code:

C:\platform-tools>adb devices
List of devices attached
XXXXXXXXXXXXX sideload

C:\platform-tools>

(XXXXXXXXXXXXX is my device id.)

I opened Device Manager and updated drivers.To update drivers,I select local drivers which comes with Android SDK's. I tried 3 driver options one by one:
Android ADB Interface
Android Bootloader Interface
Android Composite ADB Interface

But still same errors for every methods.Downloaded 2 different AdbDiverUpdater.exe files and updated drivers.Nothing different.

I tried different version of adb and fastboot.Nothing happens.

Note : All of twrp files is official and works with other E-Tab 4's.They can be easily installed with some applications(While Android is running).

There are just reboot and reset options in the recovery mode.

I had this issue with the same tablet and sent my tablet to the service a few months ago.They fixed it.I want to know how they installed ROM in this situation (Without running Android). Any idea ?


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