Lenovo S998
Lenovo S998 is a Lenovo firmware file listed under Lenovo, distributed as Lenovo_S998_S731_150706_SPD.zip with a download size of 280 MB. It is built for Unisoc (Spreadtrum)-based devices. It is flashed with SPD ResearchDownload (or UpgradeDownload). It was published on April 28, 2026. This page has been viewed 4 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 Lenovo S998
Lenovo S998 Stock Firmware (Flash File) The Flash File will help you Upgrade, Downgrade, or re-install the Stock Firmware (OS) on your Mobile Device. In addition, the Flash File (ROM) also enables you to repair the Mobile device if facing any Software Issue, Bootloop Issue, IMEI Issue, or Dead Issue. File Name: Lenovo_S998_S731_150706_SPD.zip File Size: 280 MB Flash Tool: SPD Flash Tool How to Flash (install): Follow Tutorial (Mediafire)
File Details
| File name | Lenovo S998 |
|---|---|
| Package | Lenovo_S998_S731_150706_SPD.zip |
| Brand / Platform | Lenovo |
| Category | Lenovo |
| Platform | Unisoc (Spreadtrum) |
| Flash tool | SPD ResearchDownload (or UpgradeDownload) |
| Package format | ZIP archive |
| File size | 280 MB |
| Date added | April 28, 2026 |
| Price | Free |
How to flash Lenovo S998 with SPD ResearchDownload
- Confirm Lenovo S998 matches your exact device model and that it is intended for Lenovo hardware.
- Back up your personal data, as flashing firmware can erase the device. Charge the battery above 50%.
- Download the file (280 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
- Connecting Unisoc Phones to SPD ResearchDownloadSPD ResearchDownload (also known as UpgradeDownload) is a specialized flashing tool used to install stock firmware on devices powered by Unisoc (Spreadtrum) chipsets. To connect a phone to this tool…
- 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 Lenovo S998 free to download?
Yes, Lenovo S998 can be downloaded free of charge from this page.
How large is the download?
The Lenovo S998 package is 280 MB.
Which tool do I need to flash Lenovo S998?
Lenovo S998 is Unisoc (Spreadtrum) firmware, so it is flashed with SPD ResearchDownload (or UpgradeDownload) using the .pac firmware file.
Which devices is this firmware for?
This file is intended for Lenovo devices. Always confirm it matches your specific model before flashing.