[General Topics] bneo99:
Downgrading Android from Lolipop to Kitkat without Losing IMEI

DISCLAIMER: I actually never tried this way before because I only know of this method after losing my IMEI... But as this do not use the .raw files to downgrade but rather directly installs the 6.6.1 firmware which is Android 4.4.2 (KitKat) for the K00E(WW SKU) version of the Asus Fonepad 7

If you haven't have these files get them here:

(For Windows)

1. ASUS Fonepad 7 (ME372CG) Software Image Version: WW_V6.6.1 For WW SKU only

*This file is for the WW SKU version of the Asus Fonepad 7. If you are using other SKU's search the Firmware part in the Asus support page for The Asus Fonepad 7

2. Intel Android Devices Root / Temp CWM Session by social-design-concepts

*Follow this guide to set up your computer to boot CWM recovery temporarily on your device. You will also need the Intel drivers for Android here to get your computer to communicate with your device.

(For Linux)

1. ASUS Fonepad 7 (ME372CG) Software Image Version: WW_V6.6.1 For WW SKU only

*This file is for the WW SKU version of the Asus Fonepad 7. If you are using other SKU's search the Firmware part in the Asus support page for The Asus Fonepad 7

2. release.zip byURL="http://xdaforums.com/member.php?u=2472806"]vampirefo[/URL] at Linux Tethered CWM Recovery Version

This includes the CWM recovery, TWRP recoveries that we are not going to be using and also the other files needed to make it work including the fastboot binary.

Okay, After downloading the required files let's proceed to booting into the CWM recovery.

For Windows:

NOTE: This is partially copied from social-design-concepts's thread as I haven't tried using a Windows computer for this.

Make sure you have download the latest : UPDATE-SuperSU-vX.Xx.zip and place it on your internal or external_sd

1. Copy the firmware file into a microSD card and insert it into your device. * If you want to root your Kitkat also copy the SuperSU zip file that you have downloaded into your microSD card.

2. Double click the launcher.bat file to start , type " ACCEPT " case sensitive without quotes to continue

Check that the tool is reporting as either :

DEVICE STATUS: ADB-ONLINE

DEVICE STATUS: FASTBOOT-ONLINE

If " DEVICE STATUS: UNKNOWN " please check your cable connection and driver installation under Windows Device Manager

If " DEVICE STATUS: UNAUTHORIZED " please check if your devices is displaying an authorization prompt be sure to check Always allow from this computer and then press ok

3. Select the trigger to launch the Temporary CWM Recovery Session (Use trigger 2)

4. After selecting the trigger your device should reboot in to fastboot and begin to copy files to your device

note : if your device hangs at the waiting-for-device screen and you see droidboot CMD Waiting on your devices double check that the fastboot driver installed correctly.

For Linux:

1. Copy the firmware file into a microSD card and insert it into your device. * If you want to root your Kitkat also copy the SuperSU zip file from release.zip into your microSD card.

2. Extract release.zip into a folder and name it Tethered CWM Recovery.

3. Rename cwm_recovery.zip to recovery.zip and remove the TWRP recovery zips.

4. Boot into the bootloader by pressing and holding both volume buttons and the power button until the Android icon comes out. Release the buttons.

Optionally you can do

adb reboot bootloader

if your tablet is in USB debugging mode and you have adb installed.

5. Plug your MicroUSB cable to your device and your computer.

6. Using a terminal emulator 'cd' to the Tethered CWM recovery folder and type

sudo ./trigger 2

This is the part where the 'trigger' command has completed and the device is booting to the CWM recovery.

1. The DROIDBOOT should start downloading something. Wait for a while and the CWM recovery will be loaded in an inverted orientation.

2. Using the volume and power buttons, navigate to

install zip> choose zip from external sd card

3. Choose your firmware file and it will ask you confirm the installation, select yes to continue. Wait for a while while the firmware is installed.

4. [OPTIONAL][ROOT] After the installation is complete, navigate to choose zip from external sd card again and this time select the SuperSU zip file. You will be asked to confirm the installation again. Select yes to install SuperSU and root your device.

5. After the installation is completed go back and wipe data/factory reset and wipe cache partition.

6. Once the wiping is complete select reboot system now. You will be asked to fix root.

*If you have rooted your device by installing the SuperSU zip select Yes - Fix root.

*if you have not rooted your device select No.

7. Your device will reboot and installation is complete.

Credits to :

social-design-concepts

vampirefo

Chainfire