I got it up and running again, and to those out there in same or similar situation, here's a tutorial on what I did:
Before we start, there's a few things you need;
1.1 Latest ADB version (I used 1.0.31) [ATTACHED]
1.2 Latest Fastboot version [ATTACHED]
1.3 CWM Recovery [ATTACHED]
1.4 Latest ASUS USB Drivers (available from ASUS Support site) [ATTACHED]
1.5 Padfone 2 Firmware (available from ASUS Support site)
*** NOTE: For ease of use, place extract and place all of the above to the same folder.
*** NOTE: Inside the Padfone 2 Firmware ZIP file, there's another ZIP file. This is the one we need! The one I used was called "WWE_A68-10.4.15.1-0-ota-user.zip"
*** NOTE: This method does not install CWM Recovery on your phone, it only boots it temporarily.
If you have all of the above, continue to step 2;
2.1 Booting your Padfone 2 into Fastboot mode
2.2 Press and hold Power + Volume up buttons
In Fastboot mode, connect your phone to your computer and launch cmd. Wait for windows to install necessary drivers if needed.
3.1 Navigate your CMD to the folder containing ADB, Fastboot and CWM Recovery (recovery.img)
3.2 In CMD type:
fastboot boot recovery.img
Use the volume keys to navigate and select by pressing the power button.
4.1 In CMD, transfer the Padfone 2 Firmware by typing
adb sideload [firmware-file-name.zip]
adb sideload WWE_A68-10.4.15.1-0-ota-user.zip
4.3 CWM Recovery will present you with a warning saying: "ROM may flash stock recovery on boot. Fix?" - Select "NO".
If you are experiencing problems with driver installation, you can fix it manually. If windows installed the drivers correctly, skip this step. To solve this, go to device manager by entering the Start menu, right-click Computer and select “Manage”. Select the Device Manager.
- You should see a failed device named A68. Right-click it and select “Update device software”
- Select “Browse my computer for driver software”
- Select “Let me pick from a list of device drivers on my computer”
- Select “Have Disk”
- Now browse and navigate to the folder you extracted your ASUS USB Drivers to and select the file named “android_winusb.inf”
- Select “ASUS Android ADB Interface” and install.
All done! You should have a working Padfone 2 again!
Please note that you may need to root your phone again.
Please credit if used