The InnJoo 3 is a midrange 4G Android smartphone with premium looks, but users regularly complain of battery swelling or rapid decline, sudden bootloops, “no service” network drops, overheating, and camera app crashes—often after faulty app installs or failed updates. Some users experience slowdowns over time, touchscreen glitches, or failed system updates. A lack of official software support in many regions also leads to frustration.
This official MT6750 V3.08_6.0 firmware restores your InnJoo 3 if it’s bricked, stuck on logo, lagging, or affected by Android 6.0 bugs. It returns all partitions to factory status, fixes Google Play and IMEI issues after unsuccessful customizations or root attempts, and can resolve most abnormal restart or stability failures.
InnJoo 3 Firmware Details
| Device Name: | InnJoo 3 |
| Model: | 3 (MT6750) |
| Chipset: | MediaTek MT6750T, Octa-Core (4×1.5GHz + 4×1.0GHz) |
| GPU: | Mali-T860 MP2 |
| RAM: | 4GB |
| Storage: | 64GB (expandable via microSD up to 128GB) |
| Display: | 5.5″ IPS LCD, 1920 x 1080 (401 ppi) |
| Rear Camera: | 21MP, Dual Tone Flash, f/1.8 |
| Front Camera: | 8MP w/ LED Flash |
| Battery: | 3000mAh Li-Po (non-removable) |
| SIM: | Dual SIM, 4G LTE (1800/2600 MHz) |
| Operating System: | Android 6.0 Marshmallow |
| Firmware Version: | MT6750 V3.08_6.0 |
| Build Date: | 2017-11-02 |
| File Size: | 1.25GB |
| File Type: | .zip (SP Flash Tool package) |
| Flashing Tool: | SP Flash Tool (for MediaTek/MTK devices) |
Warning: Wrong firmware or process can brick your InnJoo 3 or erase IMEI/data. Confirm your device model, charge the battery, and back up data. Do not disconnect during flashing.
Download Official Firmware for InnJoo 3
Below is the only verified official firmware for InnJoo 3. Use to fix stuck logo, camera or battery issues, Android bugs, Google Play, or to recover after failed root/ROM attempts.
There are no official manufacturer changelogs for this version.
📄 Filename: InnJoo_3_MT6750_V3.08_6.0.zip
📦 Size: 1.25GB
🗓️ Build Date: 2017-11-02
🔢 Build Version: MT6750 V3.08_6.0
🤖 Android Version: 6.0 Marshmallow
⬇️ Download Link: MediaFire (Direct)
How to Flash the Firmware
- Extract InnJoo_3_MT6750_V3.08_6.0.zip on your PC.
- Install MediaTek VCOM drivers compatible with your Windows system.
- Run SP Flash Tool and load the included scatter file.
- Power off your InnJoo 3, connect to PC via USB (while holding Vol Down if needed).
- Press “Download” in SP Flash Tool; do not unplug until the “Success” message appears.
See the complete guide (with images & video) for flashing MTK firmware here.
