Operation Manual

21 How to Fix Booting Failure

This documentation is intended to provide repairing guide in case of booting failure of TizzBird.

TizzBird F10/F11/F20/F30 is based on Android Gingerbread

This repairing method is only applied from firmware revision 2.0.6 or later for F10/ F11/ F20/ F30.

21.1 Abstract

The symptom of booting failure looks like as below.

 Symptom A: No changes at BOOTING ANIMATION (Animation with black background)

 Symptom B: No changes at BOOTING LOGO (Tizzbird text with white background)

Above symptoms may be caused by several different reasons. There are two ways to fix these

symptoms.

 Symptom A : Can be fixed using “

Safe Mode Booting

”.

 Symptom B (or Symptom A) : Can be fixed using “

System Recovery Mode”

21.2 Repairing by

Safe Mode Booting

Please follow below steps.

1) Power off device completely then turn it on again.

2) As soon as you see BOOT LOGO (TEXT with white background), press and hold <MENU>

button on remote until home screen comes up.

3) You can read “Safe Mode” text at left-bottom side of screen, when you enter the SAFE

BOOTING MODE.

After

SAFE MODE BOOTING

, you need to do one of below action items.

 Action item #1

 Uninstall last APKs you have installed, as they may cause a booting failure.

 Action item #2

 You need to back up your personal data and installed packages so far.

 Do “Set Factory Default” by selecting “Settings Browser”  “System”  “Advanced

Settings”  “Set Factory Default” with “Erase all” option.

21.3 Repairing by

System Recovery Mode

21.3.1 Preparation

1) Prepare USB flash drive which has more than 128MB of free space.

2) Download the latest upgrade firmware from Tizzbird WEB (http://www.tizzbird.com)

according to your device. Normally the name of upgrade package is something like

“Tizzbird_mmm_update_vvv.tzbird”. “mmm”

means model name like “F3x”, “F20”.

“

vvv

” means update version and date like “V2_06_2102115”.

3) Copy downloaded firmware to root folder of USB flash drive. Then rename it “update.zip”

21.3.2 Entering System Recovery Mode

1) Power off device completely then turn it on again. If you’re not sure, pull the power cable off

then reconnect it.