SC20 Logo&Animation Changing User Guide - V1.1 - Update Splash Image

Sep 10, 2026

Guide SC20 Android platform users to personalize the Little Kernel (LK) startup logo and boot/shutdown animations. It provides two logo change approaches: generating splash.img from a customer PNG asset using logo_gen.py, then flashing it to the device and updating emmc resources if needed; or compiling the Aboot image using generated raw data and integrating it into splash.h with make aboot. Includes required image format, resolution constraints, and troubleshooting when the correct logo is not displayed.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages10

Reading Time25 min

AccessFree to download

About the Document

History

1 Introduction

2 Change Logo of LK

2.1 Method One: Through Creating Image "splash.img" (Recommended)

2.2 Method Two: Through Compiling Aboot Image

3 Change Boot/Shutdown Animations

SC20 Logo&Animation Changing User Guide Smart LTE Module Series Rev. SC20_Logo&Animation_Changing_User_Guide_V1.1 Date: 2018-06-06 Status: Released [www.quectel.com](www.quectel.com) Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. 7th Floor, Hongye Building, No.1801 Hongmei Road, Xuhui District, Shanghai 200233, China Tel: +86 21 5108 6236 Email: [info@quectel.com](info@quectel.com) Or our local office. For more information, please visit: [http://quectel.com/support/sales.htm](http://quectel.com/support/sales.htm) For technical support, or to report documentation errors, please visit: [http://quectel.com/support/technical.htm](http://quectel.com/support/technical.htm) Or email to: [support@quectel.com](support@quectel.com) GENERAL NOTES QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION. ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. COPYRIGHT THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF QUECTEL WIRELESS SOLUTIONS CO. , LTD. TRANSMITTING, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL OR DESIGN. Copyright © Quectel Wireless Solutions Co., Ltd. 2018. All rights reserved. About the Document History | Revision | Date | Author | Description | | | --- | --- | --- | --- | --- | | 1.0 | 2017-04-06 | Barnett WANG | Initial | | | 1.1 | 2018-06-06 | Arthur LIU | Added the method toemmc folder and the (Chapter 2.1) . | update splash. img in customers’information about aboot.c codes | Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 1 Introduction .......................................................................................................................................... 4 2 Change Logo of LK .............................................................................................................................. 5 2.1. Method One: Through Creating Image “splash.img” (Recommended) .................................. 5 2.2. Method Two: Through Compiling Aboot Image ....................................................................... 6 3 Change Boot/Shutdown Animations ................................................................................................. 8 1 Introduction This document mainly introduces how to change the logo of little kernel (LK) and boot/shutdown animations according to customers’ preferences in SC20’sAndroid system. 2 Change Logo of LK This chapter introduces two methods to change the logo of LK in SC20’s Android system. 2.1. Method One: Through Creating Image “splash.img”(Recommended) 1. Create a folder logo in path android/device/qcom/comom/display. Put customers’ desired image xxx.png and script [logo_gen.py](logo_gen.py) which are used for creating the logo into the folder, and then execute the following command to generate the image splash.img. python./logo_gen. py xxx. png 2. Download splash.img to partition splash of the device by executing the following commands: adb reboot bootloader

FAQs

What is the purpose of this user guide for SC20 Android?

It explains how to change the Little Kernel (LK) logo and boot/shutdown animations according to customer preferences on SC20’s Android system.

What are the two methods provided to change the LK logo?

Method one generates and uses splash.img; method two changes the logo by compiling the Aboot image. Method one is recommended, while method two is not recommended due to limited aboot partition space.

What image requirements must be met for the logo in Method One?

The customer image must be in PNG format, with BPP 8 not supported, and the image resolution must match the device display resolution exactly.

Sep 10, 2026

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