Q1. What is Android 9 Pie (Go edition)?

Android Go is a streamlined version of Android designed by Google for entry-level smartphones with 2GB of RAM or less. It uses less storage space and includes lightweight "Go" versions of popular Google apps, providing a smoother experience on hardware like the Advan Nasa.

Q2. Will this firmware fix the Face ID unlock if it's not working?

If the Face ID feature stopped working due to a software bug or corrupted data, a full firmware flash will restore the original software and should fix it. If the problem persists after a clean flash, it could indicate a hardware issue with the front camera.

Q3. Why is the flash tool stuck on the "Checking Baudrate" step?

This is the most common issue when flashing SPD devices and it indicates a communication problem. It is almost always caused by incorrect drivers or an improper connection sequence. Re-install the SPD drivers and ensure you are pressing and holding the Volume Down key *before* connecting the USB cable.

Advan Nasa (5202) Stock Firmware (Android 9.0 Go) .pac File

The Advan Nasa (model 5202) is a 5.2-inch budget smartphone from the Indonesian brand Advan, released in late 2019. It runs on Android 9 Pie (Go edition), which is optimized for its entry-level hardware, and includes features like Face ID unlock. If your Advan Nasa is bricked, stuck in a bootloop, or has persistent software errors, flashing the official stock firmware is the definitive solution to restore the device.

Important Note: This device uses a UNISOC (formerly Spreadtrum) chipset and the firmware is in a `.pac` file format. The flashing process requires the SPD Upgrade Tool and will completely erase all your personal data.

⚠️ Prerequisites: Before You Begin

Click Here for the Essential Pre-Flashing Checklist

Backup Your Data: All your files, photos, and contacts on the internal storage will be permanently deleted during this process.
Charge The Battery: To prevent interruptions, ensure the phone’s battery has at least a 50% charge before you begin.
Windows PC & USB Cable: This procedure requires a Windows computer and the phone’s micro USB data cable.

📱 Quick Device Specifications

Device: Advan Nasa (5202)
Release Year: 2019
Chipset: UNISOC SC9832E
Display: 5.2″ qHD IPS LCD (960×540)
Battery: 2450 mAh
OS: Android 9.0 Pie (Go edition)
RAM/Storage: 2GB / 16GB

🛠 Required Tools & Downloads

File / Tool	Download Link
SPD Upgrade Tool	Download Tool
SPD SCI USB Drivers	Download Drivers

⬇️ Advan Nasa (5202) Stock ROM / Firmware

Model	Android	Chipset	Type	Download	Size
Nasa (5202)	9.0 Pie (Go edition)	UNISOC SC9832E	SPD (.pac File)	Google Drive	1.0 GB

⚡ Quick Flashing Guide

Download and install the SPD SCI USB Drivers. Extract the firmware (Advan_Nasa_5202...SPD.zip) to get the .pac file, and extract the SPD Upgrade Tool.
Launch UpgradeDownload.exe. Click the first gear icon (Load Packet) and select the .pac firmware file you extracted.
Click the third icon, the play button (Start Downloading), to put the tool in standby mode.
Power off your phone completely. Press and hold the Volume Down button.
While still holding the volume button, connect the phone to your PC. The flashing will begin. You can release the button once the progress bar appears.
Wait for the process to finish, indicated by a green “Passed” message. Disconnect the phone and power it on.

For a more detailed, step-by-step walkthrough, please refer to our main guide:
👉 Full Tutorial: How to Flash Firmware with the SPD Upgrade Tool

❓ Frequently Asked Questions (FAQs)

Q1. What is Android 9 Pie (Go edition)?: Android Go is a streamlined version of Android designed by Google for entry-level smartphones with 2GB of RAM or less. It uses less storage space and includes lightweight “Go” versions of popular Google apps, providing a smoother experience on hardware like the Advan Nasa.
Q2. Will this firmware fix the Face ID unlock if it’s not working?: If the Face ID feature stopped working due to a software bug or corrupted data, a full firmware flash will restore the original software and should fix it. If the problem persists after a clean flash, it could indicate a hardware issue with the front camera.
Q3. Why is the flash tool stuck on the “Checking Baudrate” step?: This is the most common issue when flashing SPD devices and it indicates a communication problem. It is almost always caused by incorrect drivers or an improper connection sequence. Re-install the SPD drivers and ensure you are pressing and holding the Volume Down key *before* connecting the USB cable.

🔧 Device-Specific Troubleshooting

Phone Not Detected by PC: If drivers are properly installed, the problem is likely the boot key sequence. Make sure the phone is completely powered off. Hold the boot key (Volume Down is standard, but some devices use Volume Up) firmly *before* you plug in the USB cable. You should see a new device appear in your Windows Device Manager when connected correctly.
“Operation Failed” Error During Flashing: If the process starts but then fails, try using a different USB port (USB 2.0 is often more reliable) and a known-good data cable. The .pac file could also be corrupted, so downloading the firmware again is a good step. For newer UNISOC chipsets, you may sometimes need a more recent version of the ResearchDownload tool.
Invalid IMEI After Flashing: It is a risk with UNISOC/SPD devices that a full flash can wipe the IMEI numbers. This firmware will not restore them. You will need a separate SPD IMEI repair tool to write your original IMEI numbers (found on the phone’s box or SIM tray) back to the device.
Stuck on Advan Logo After a “Passed” Message: If the flash completes successfully but the phone won’t boot, a factory reset is necessary. Boot into recovery mode (usually by holding Power + Volume Up), and in the menu, select “wipe data/factory reset.” This will clear old data conflicts and allow the new system to boot.