Advan S4R
Advan S4R is a Advan firmware file listed under Advan, distributed as Advan_S4R_SC8825_4.4.2_20151203_SPD.zip with a download size of 177 MB. It is built for the Unisoc (Spreadtrum) SC8825 chipset and runs Android 4.4 (KitKat), with a firmware build date of December 03, 2015. It is flashed with SPD ResearchDownload (or UpgradeDownload). It was published on June 16, 2026. This page has been viewed 10 times. It is available to download free of charge. Before flashing, verify the file matches your exact device model and back up your data.
About Advan S4R
If your Advan S4R has been giving you trouble, reinstalling the stock firmware is often the cleanest fix. Here you'll find the full Advan flash package along with the details to check before you begin. Whether an update corrupted the system or a root attempt went wrong, the factory ROM puts the Advan S4R back to square one. File Name: Advan_S4R_SC8825_4.4.2_20151203_SPD.zip File Size: 177 MB Copy your data somewhere safe, top up the battery, grab a working USB cable, and confirm the proper drivers are set up before you start. With the stock ROM back in place, the Advan S4R returns to factory state. If something fails, verify the file matches your model and retry.
File Details
| File name | Advan S4R |
|---|---|
| Package | Advan_S4R_SC8825_4.4.2_20151203_SPD.zip |
| Brand / Platform | Advan |
| Category | Advan |
| Chipset | Unisoc (Spreadtrum) SC8825 |
| Android version | Android 4.4 (KitKat) |
| Build date | December 03, 2015 |
| Flash tool | SPD ResearchDownload (or UpgradeDownload) |
| Package format | ZIP archive |
| File size | 177 MB |
| Date added | June 16, 2026 |
| Price | Free |
How to flash Advan S4R with SPD ResearchDownload
- Confirm Advan S4R matches your exact device model and that the phone uses the SC8825 chipset.
- Back up your personal data, as flashing firmware can erase the device. Charge the battery above 50%.
- Download the file (177 MB) using the button above and extract it on a Windows PC.
- Install the SPD / Unisoc USB drivers, then open SPD ResearchDownload (or UpgradeDownload).
- In the tool, load the .pac firmware file from the extracted folder.
- Start the flash, then press Start in the tool, then connect the powered-off phone while holding Volume Down (boot key).
- Wait for the success message before disconnecting. Leave "Erase NV" unticked unless you intend to wipe IMEI and calibration data.
Guides for this firmware
- Flashing .pac Files with SPD ResearchDownload GuideSPD ResearchDownload (also known as UpgradeDownload) is a specialized flashing tool used to install stock firmware on devices powered by Unisoc (Spreadtrum) chipsets. It is primarily used to unbrick…
- How to Use SPD ResearchDownload: Firmware Flashing GuideSPD ResearchDownload (also known as UpgradeDownload) is a specialized flashing tool used to install stock firmware on devices powered by Unisoc (Spreadtrum) chipsets. It allows technicians and users…
Frequently asked questions
Is Advan S4R free to download?
Yes, Advan S4R can be downloaded free of charge from this page.
How large is the download?
The Advan S4R package is 177 MB.
Which tool do I need to flash Advan S4R?
Advan S4R is Unisoc (Spreadtrum) SC8825 firmware, so it is flashed with SPD ResearchDownload (or UpgradeDownload) using the .pac firmware file.
What Android version is Advan S4R?
This firmware is Android 4.4 (KitKat), built on December 03, 2015.
Which devices is this firmware for?
This file is intended for Advan devices. Always confirm it matches your specific model before flashing.