ZTE U791
ZTE U791 is a ZTE firmware file listed under ZTE, distributed as ZTE_U791_V1.0.0_B03_07052014_SPD.zip with a download size of 126 MB. It is built for Unisoc (Spreadtrum)-based devices, with a firmware build date of May 07, 2014. It is flashed with SPD ResearchDownload (or UpgradeDownload). It was published on June 16, 2026. This page has been viewed 38 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 ZTE U791
The ZTE U791 runs on ZTE's factory software, and sometimes you need to reinstall it from scratch. This page provides the genuine stock ROM so you can return the device to its original state. Flashing the stock ROM can clear boot loops, failed updates, a frozen logo screen, or sluggish performance, replacing the system software with a known good copy. File Name: ZTE_U791_V1.0.0_B03_07052014_SPD.zip File Size: 126 MB Before flashing, back up your data (the process wipes the device), charge above 50 percent, and install the correct USB drivers on your computer. Once installed, your ZTE U791 should boot up like new. Use the right file for your exact model and don't interrupt the process.
File Details
| File name | ZTE U791 |
|---|---|
| Package | ZTE_U791_V1.0.0_B03_07052014_SPD.zip |
| Brand / Platform | ZTE |
| Category | ZTE |
| Platform | Unisoc (Spreadtrum) |
| Build date | May 07, 2014 |
| Flash tool | SPD ResearchDownload (or UpgradeDownload) |
| Package format | ZIP archive |
| File size | 126 MB |
| Date added | June 16, 2026 |
| Price | Free |
How to flash ZTE U791 with SPD ResearchDownload
- Confirm ZTE U791 matches your exact device model and that it is intended for ZTE hardware.
- Back up your personal data, as flashing firmware can erase the device. Charge the battery above 50%.
- Download the file (126 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 ZTE U791 free to download?
Yes, ZTE U791 can be downloaded free of charge from this page.
How large is the download?
The ZTE U791 package is 126 MB.
Which tool do I need to flash ZTE U791?
ZTE U791 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 ZTE devices. Always confirm it matches your specific model before flashing.