Winmax Dolphin V4
Winmax Dolphin V4 is a Winmax firmware file listed under Winmax, distributed as Winmax_Dolphin_V4_SC7731C_V07_20170803_6.0_SPD.zip with a download size of 921 MB. It is built for the Unisoc (Spreadtrum) SC7731C chipset and runs Android 6.0 (Marshmallow), with a firmware build date of August 03, 2017. It is flashed with SPD ResearchDownload (or UpgradeDownload). It was published on June 16, 2026. This page has been viewed 36 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 Winmax Dolphin V4
If your Winmax Dolphin V4 has been giving you trouble, reinstalling the stock firmware is often the cleanest fix. Here you'll find the full Winmax flash package along with the details to check before you begin. It can rescue a bricked handset, fix IMEI or baseband errors, and give the Winmax Dolphin V4 a fresh start without the clutter that builds up over time. File Name: Winmax_Dolphin_V4_SC7731C_V07_20170803_6.0_SPD.zip File Size: 921 MB Back up everything important first, keep the battery above the halfway mark, use a cable you trust, and make sure the right drivers are installed. With the stock ROM back in place, the Winmax Dolphin V4 returns to factory state. If something fails, verify the file matches your model and retry.
File Details
| File name | Winmax Dolphin V4 |
|---|---|
| Package | Winmax_Dolphin_V4_SC7731C_V07_20170803_6.0_SPD.zip |
| Brand / Platform | Winmax |
| Category | Winmax |
| Chipset | Unisoc (Spreadtrum) SC7731C |
| Android version | Android 6.0 (Marshmallow) |
| Build date | August 03, 2017 |
| Flash tool | SPD ResearchDownload (or UpgradeDownload) |
| Package format | ZIP archive |
| File size | 921 MB |
| Date added | June 16, 2026 |
| Price | Free |
How to flash Winmax Dolphin V4 with SPD ResearchDownload
- Confirm Winmax Dolphin V4 matches your exact device model and that the phone uses the SC7731C chipset.
- Back up your personal data, as flashing firmware can erase the device. Charge the battery above 50%.
- Download the file (921 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 Winmax Dolphin V4 free to download?
Yes, Winmax Dolphin V4 can be downloaded free of charge from this page.
How large is the download?
The Winmax Dolphin V4 package is 921 MB.
Which tool do I need to flash Winmax Dolphin V4?
Winmax Dolphin V4 is Unisoc (Spreadtrum) SC7731C firmware, so it is flashed with SPD ResearchDownload (or UpgradeDownload) using the .pac firmware file.
What Android version is Winmax Dolphin V4?
This firmware is Android 6.0 (Marshmallow), built on August 03, 2017.
Which devices is this firmware for?
This file is intended for Winmax devices. Always confirm it matches your specific model before flashing.