Download Hello B1 Stock Firmware (Official .pac File)

The Hello B1 is an ultra-budget smartphone from 2019 powered by a Spreadtrum SP7731GEA processor. It runs on Android 6.0 Marshmallow and, like many devices in its class, features extremely limited hardware, likely 1GB of RAM and a small amount of internal storage. This makes the device highly susceptible to performance degradation over time. A critical distinction for this phone is its Spreadtrum chipset, which means it uses a different flashing tool and firmware type than MediaTek devices. For owners of this phone, performing a clean firmware flash is the only effective way to restore the device to a usable state.

Crucial Safety Warning: This firmware is for a Spreadtrum (SPD) device. It must be flashed using the SPD Upgrade Tool or Research Download Tool. Do NOT attempt to use SP Flash Tool, as it is incompatible and will not work.

Hello B1 Firmware Details

Below are the key specifications for the Hello B1. Note the Spreadtrum chipset and the corresponding .pac file type, which require a specific flashing procedure.

Why Flash the Stock Firmware on Your Hello B1?

Due to its very limited hardware, flashing the stock firmware is essential for addressing the critical performance issues that make this device nearly unusable over time:

• Fix Extreme Performance Lag: This is the primary reason to flash. A clean OS install is the only way to handle the severe system-wide lag that makes even basic navigation a slow and frustrating experience.
• Resolve “Insufficient Storage” Errors: Wipes the device clean, freeing up the very limited internal storage to allow essential system functions and a few apps to run correctly.

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• Stop Constant App Crashes: Solves persistent “force close” errors caused by the device running out of its minimal RAM when trying to run modern applications.
• Remove Viruses and Malware: Older, unpatched devices are highly vulnerable. A full firmware flash is the only way to guarantee the complete removal of any malware.
• Fix Bootloop Errors: The definitive solution for a phone that is stuck on the Hello startup logo and will not boot.
• Unbrick Your Device: Can revive a phone that has become completely unresponsive due to a software error.

⚠️ Important Prerequisites

Before you begin, back up any accessible data. This process will completely erase the phone’s internal storage.

• The latest version of the SPD Upgrade Tool or Research Download Tool.
• The correct Spreadtrum USB drivers installed on your PC.

Download Official Firmware for Hello B1

• Build Date: 190919
  • File Name: Hello_B1_SP7731GEA_V001_190919_6.0_SPD.zip
  • Size: 613 MB
  • 🔗 Download Link: Download (Google Drive)

How to Flash the Firmware

This firmware must be installed using the **SPD Upgrade Tool**. The process involves loading a `.pac` file from the downloaded firmware. Here is a summary of the steps:

1. Download and extract the Hello_B1_..._SPD.zip file. Inside, you will find the firmware file with a .pac extension.
2. Download and install the Spreadtrum USB drivers on your PC.
3. Launch the SPD Upgrade Tool software.
4. Click the “Load Packet” button (it looks like a single gear icon) and select the .pac firmware file you just extracted.
5. Completely power off your Hello B1.
6. Click the “Start Downloading” button (it looks like a play icon).
7. While the phone is off, press and hold the Volume Down button, and then connect it to your PC via USB cable. The flashing process will begin automatically.
8. Once the progress bar turns green and shows a “Passed” message, the flash is complete. You can now disconnect your phone and turn it on.

For a complete, step-by-step tutorial with screenshots and troubleshooting, please follow our master guide:

→ How to Flash .pac Firmware Using SPD Upgrade Tool

Disclaimer: Flashing firmware is an advanced procedure. This firmware and tool are for Spreadtrum devices only. Using the wrong files or not following the instructions precisely can permanently damage your device. Proceed with extreme caution.