Q1. I can't find any info about the "Advan E78." Is this the correct firmware?

This firmware is specifically labeled by the manufacturer for a model named Advan E78 with a UNISOC SC9863A chipset. While this model may be uncommon or have a different marketing name, if your device's model and chipset match the firmware file, this is the correct software to use for restoration.

Q2. Why is the flashing tool stuck on "Checking Baudrate"?

This is the most common issue when using the SPD Upgrade Tool and it signifies a communication failure. This is almost always caused by an incorrect driver installation or not using the correct boot key sequence. Re-install the SPD drivers and ensure you are pressing and holding the Volume Down key *before* connecting the USB cable.

Q3. Will this fix my device if the IMEI is invalid?

No. A full firmware flash on UNISOC/SPD devices often does not restore a lost IMEI and can sometimes be the cause of the issue if partitions are formatted. To restore a null or invalid IMEI, you will need a separate, dedicated SPD IMEI repair tool and your device's original IMEI number.

Advan E78 Stock Firmware (UNISOC SC9863A) .pac File

The Advan E78 appears to be a lesser-known device from the Indonesian manufacturer Advan, powered by a UNISOC SC9863A chipset and running Android 10. While not widely documented, this stock firmware is the official software package for this specific model. Flashing this firmware is the definitive method to unbrick the device, resolve critical software errors, or remove viruses by restoring it to its original factory state.

Important Note: This device uses a UNISOC (formerly Spreadtrum) chipset. The flashing process requires the SPD Upgrade Tool and the provided `.pac` firmware file. Following this guide 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.
Charge The Battery: To prevent interruptions, ensure the device’s battery has at least a 50% charge before you begin.
Windows PC & USB Cable: This procedure requires a Windows computer and a compatible USB data cable.

📱 Quick Device Specifications

Device: Advan E78
Release Year: ~2020
Chipset: UNISOC SC9863A
Display: N/A
Battery: N/A
OS: Android 10
RAM/Storage: N/A

🛠 Required Tools & Downloads

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

⬇️ Advan E78 Stock ROM / Firmware

Model	Android	Chipset	Type	Download	Size
E78	10	UNISOC SC9863A	SPD (.pac File)	Google Drive	~1.4 GB

⚡ Quick Flashing Guide

Download and install the SPD SCI USB Drivers. Extract the firmware (Advan_E78_SC9863A...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 device completely. Press and hold the Volume Down button.
While still holding the volume button, connect the device 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 device 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. I can’t find any info about the “Advan E78.” Is this the correct firmware?: This firmware is specifically labeled by the manufacturer for a model named Advan E78 with a UNISOC SC9863A chipset. While this model may be uncommon or have a different marketing name, if your device’s model and chipset match the firmware file, this is the correct software to use for restoration.
Q2. Why is the flashing tool stuck on “Checking Baudrate”?: This is the most common issue when using the SPD Upgrade Tool and it signifies a communication failure. This is almost always caused by an incorrect driver installation or not using the correct boot key sequence. Re-install the SPD drivers and ensure you are pressing and holding the Volume Down key *before* connecting the USB cable.
Q3. Will this fix my device if the IMEI is invalid?: No. A full firmware flash on UNISOC/SPD devices often does not restore a lost IMEI and can sometimes be the cause of the issue if partitions are formatted. To restore a null or invalid IMEI, you will need a separate, dedicated SPD IMEI repair tool and your device’s original IMEI number.

🔧 Device-Specific Troubleshooting

Device Not Detected by PC: If drivers are properly installed, the problem is likely the connection method. Ensure the device is completely powered off. Hold the boot key (Volume Down is standard, but try Volume Up if that fails) firmly *before* you plug in the USB cable. You should see a new device appear in your Windows Device Manager.
“Operation Failed” Error During Flash: If the process begins but fails midway, first try a different USB port (USB 2.0 ports are often more stable) and a known-good data cable. The .pac file could also be corrupted, so downloading the firmware again is a good step. For some newer UNISOC chipsets, you may need a more recent version of the ResearchDownload tool if the Upgrade Tool fails.
Hardware Features Not Working After Flash: If after a successful flash, features like the camera, Wi-Fi, or display are not working correctly (e.g., wrong colors), it’s possible that the “E78” model has multiple hardware revisions. This firmware may not be compatible with your specific revision. This is an inherent risk with less-documented devices.
Stuck in a Bootloop After a “Passed” Message: If the tool confirms a successful flash but the device won’t boot past the logo, a factory reset is required. Boot into recovery mode (usually by holding Power + Volume Up), and in the menu, select “wipe data/factory reset” and reboot.