The Innjoo F104 is an affordable 10-inch Android tablet for basic productivity and multimedia, but its users frequently report rapid battery drain, device lag, unresponsive apps, display discoloration, and recurring bootloop or stuck logo problems. Physical construction quality is a concern, with weak plastic and screen gaps leading to dust intrusion and dead pixels. Many also complain about poor battery reliability and the company’s lack of after-sales support. Flashing the official firmware below can resolve many startup, software crash, and OS corruption issues, restore the tablet to working order, and address bugs from failed updates or forgotten passwords.
Innjoo F104 Firmware Details
| Device Name: | Innjoo F104 |
| Model: | F104 |
| Chipset: | Spreadtrum/UNISOC SC7731E (Quad-Core 1.3GHz) |
| GPU: | Mali-400 MP2 |
| Android Version: | 8.1.0 (Oreo, Go Edition) |
| Firmware Version: | SP7731E_20191126_8.1.0_MIRA |
| Build Date: | November 26, 2019 |
| File Size: | 708MB |
| File Type: | PAC firmware archive (.zip, SPD Upgrade Tool) |
| Flashing Tool: | SPD ResearchDownload/UpgradeDownload |
| Display: | 10.1-inch IPS, 800×1280 pixels |
| RAM / Storage: | 1GB RAM / 16GB ROM (expandable up to 64GB via microSD) |
| Camera: | 2MP Rear + 0.3MP Front |
| Battery: | 5000mAh Li-ion (non-removable) |
| Other: | 3G single-SIM, Wi-Fi b/g/n, plastic housing, standard micro USB |
Download Official Firmware for Innjoo F104
This firmware resolves system corruption, persistent lag, failed boot, FRP lock, and OS instability. It is essential for recovering tablets after failed updates, accidental rooting, or forgotten passwords.
📄 Filename: Innjoo_F104_SP7731E_20191126_8.1.0_MIRA.zip
📦 Size: 708MB
🗓️ Build Date: November 26, 2019
🔢 Build Version: SP7731E_20191126_8.1.0_MIRA
🤖 Android Version: 8.1.0 (Oreo Go Edition)
⬇️ Download Link: Google Drive
How to Flash the Firmware
Follow these 5 quick steps to safely flash Innjoo_F104_SP7731E_20191126_8.1.0_MIRA.zip to your device:
- Download and extract
Innjoo_F104_SP7731E_20191126_8.1.0_MIRA.zipand the SPD Upgrade Tool to your PC. - Install Spreadtrum/UNISOC USB drivers, then launch the Upgrade Tool.
- Load the PAC file from the extracted folder into the tool interface.
- Turn off your Innjoo F104, hold the volume button, and connect it to your PC.
- Click “Start/Download” and wait until the process completes before rebooting the tablet.
See the full illustrated guide at this SPD flashing walkthrough.
