[Android General] Viva La Android R.I.P.:
Hot Pepper™ Chilaca

4G-LTE Smartphone

T-Mobile® Certified

Model No. HPP-L60A

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Factory Firmware

Restoration &

Unbricking Guide​

OVERVIEW

ThIs guide will outline detailed instructions for restoring the factory firmware on the Hot Pepper Chilaca (HPP-L60A) smartphone. This procedure can be used to unbrick your device, recover from a persistent boot loop, resolve issues involving corrupt firmware, or simply revert a modified device to its stock factory state.

PREREQUISITES​

A PC or laptop running Windows 7/8.1/10/11​

A reliable internet connection to download the provided files​

The factory supplied, or a quality equivalent, USB-A to USB-C data syncing/charging cable​

The MediaTek vCOM drivers will need to be installed on your PC or laptop (link to installation guide is provided in downloads section)​

DISCLAIMER

While any procedure involving the flashing of a mobile device's partitions is inherently risky, these risks are somewhat diminished by the fact that many of the members using this guide already have an inoperable or malfunctioning device. Nevertheless, by proceeding further, you are assuming sole responsibility for the operability and integrity of your smartphone, thus absolving me of any liability in the event things go bad. Follow the instructions carefully, employ some patience, and things should go smoothly. I would strongly encourage inexperienced members to read this guide in its entirety, prior to beginning the instructions.

BOOTLOADER STATE

It should be noted that this guide will suffice to restore your device regardless of whether your bootloader is in a locked or unlocked state.

If your bootloader is in an unlocked state at the time you commence with this guide, the flashing method outlined in the instructions will not relock your bootloader.

Lastly, OTA updates do not check the state of the bootloader prior to installation. Hence, even in an unlocked state, OTA updates will install normally.
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FIRMWARE INFO

OS/Version: Android 12 (Go Edition)

Firmware Build: HPP-L60A-3.0.18

Build ID: 12/SP1A.210812.016

Kernel Version: Linux v4.19.191

Radio: MOLY.LR12A.R3.MP.V208.3.P5

Bootloader: x047_k61v1_32_bsp_1g

Security Patch Level: September 5, 2022

API Level: 31

Partition Scheme: Dynamic (Non A/B)

Project Treble: Supported

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INSTRUCTIONS

Due to the secure boot feature of the Chilaca, the SP Flash Tool will not flash factory firmware unless the user provides a secure authentication (SecAuth) file in conjunction with the firmware package. Thanks to a brilliant group of developers, however, there is an exploit to disable the secure boot feature on your Chilaca, thus fully bypassing the DA/SLA security check performed by SP Flash Tool. This will enable the factory firmware to be flashed without an authorization file loaded into SP Flash Tool.

Before we begin, if you have not yet installed the MediaTek vCOM drivers on your Windows computer, visit the link provided in the downloads section below and complete that task.​

Download the SecAuth bypass utility from the below link and extract the archived file to an empty folder on your computer's desktop​

Right click mtksecbypass.exe and run it as an administrator​

Click the Disable Secure Boot tab in the tool's interface. Next, connect the USB-A end of your data syncing cable to your PC or laptop​

Ensuring that your Chilaca is in a powered off state, press and hold the Volume +, Volume -, and Power keys simultaneously while then connecting the USB-C end of the cable to your smartphone. Do not release the three hardware keys until you are notified that secure boot has been successfully disabled. Disconnect the USB-C end of the cable from your phone and ensure it remains powered off. Leave the cable connected to your computer​

Next, download SP Flash Tool from the below link and extract the contents of the archived file to an empty folder on your desktop.​

Download the HPP-L60A firmware package from the below link and extract the contents of the file to an empty folder on your desktop​

In the SP Flash Tool folder, right click flash_tool.exe and run it as an administrator.​

Click the tab corresponding with the Scatter Loading File box in the SP Flash Tool interface. Windows File Explorer will be launched. Now navigate to the folder wherein you extracted the firmware file. Select MT6761_Android_scatter.txt then click Open​

A violet progress bar at the bottom of SP Flash Tool will indicate the loading of the firmware package. Once loaded, click the Download tab. Next, without pressing any hardware buttons, connect the USB-C end of the cable to your Chilaca.​

If the MediaTek vCOM drivers are properly configured on your computer, your smartphone will be recognized by SP Flash Tool and the firmware restoration process will begin. A progress bar at the bottom of the flash tool interface will reflect the status of the installation​

Once flashing is complete, SP Flash Tool will indicate that the installation was successful. Now simply power on your smartphone and allow the device to boot.​

Your Chilaca should now be restored to its stock factory state and running on firmware build HPP-L60A-3.0.18. Because this build is not the most recent, upon reboot and completion of initial setup, you will be prompted to install one or more OTA updates in order to bring the firmware up to the most recent version.
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DOWNLOADS

• SecAuth Bypass Tool v1.0.0R001

• Firmware Build HPP-L60A-3.0.18

• MediaTek vCOM Drivers Installation Guide

• SP Flash Tool v5.1924

THANKS & CREDITS

Full credit for the SecAuth bypass tool goes to Chaosmaster, xyzz, & Bjoern Kerler. Credit for the MediaTek vCom installation guide for Windows goes to XDA Senior Member @skeleton1911. Thanks to Support Tech Jorge Chavez over at Hot Pepper™ Mobile for providing the factory firmware for the Chilaca. Thanks to Hot Pepper™ CEO Shawn Sun for giving me a Chilaca handset and allowing me to evaluate and test the device.
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