The Mobiistar Zumbo S2 is a 5.5‑inch Android smartphone built on the MediaTek MT6737T quad‑core platform with 3 GB of RAM, 16 GB of storage, and Android 7.0 Nougat.
On this model, low‑end eMMC performance, full internal storage, and failed OTA updates can trigger bootloops, random reboots, or devices stuck at the boot logo; flashing the V14_RC05_07072017 MT6737T stock ROM can help return the phone to a known‑good factory state, especially after unsuccessful modifications or corrupt system partitions.
Mobiistar Zumbo S2 Firmware Details
| Field | Details |
|---|---|
| Device Name | Mobiistar Zumbo S2 (and Zumbo S2 Dual family) |
| Model Identifier | Zumbo S2 / Zumbo S2 Dual, 3 GB RAM / 16 GB storage variants |
| Codename | MediaTek MT6737T platform; no widely used public codename |
| Chipset / Platform | MediaTek MT6737T, quad‑core Cortex‑A53 up to ≈1.4–1.5 GHz, Mali‑T720 MP2 GPU |
| Launch Android Version | Android 7.0 Nougat |
| Firmware on this page | Mobiistar_Zumbo_S2_MT6737T_V14_RC05_07072017.zip (V14 RC05 build for MT6737T) |
| Current Firmware Line | Android 7.0 Nougat V14 RC05 maintenance branch for Zumbo S2 MT6737T |
| Typical File Size Range | ≈ 1.0–1.5 GB compressed for SP Flash packages; this archive is about 1.44 GB as provided. |
| Firmware Type | Scatter‑based stock ROM (preloader, boot, system and other images for SP Flash Tool) |
| Flashing Tool | SP Flash Tool for MediaTek MT6737T devices (Download mode via scatter file) |
| Bootloader Requirement | Standard locked MTK bootloader; flashing occurs through preloader/Download mode with correct DA and authentication when required. |
| Region / Branch Notes | Designed for Zumbo S2 phones sold in markets where MT6737T and Android 7.0 were shipped; only flash on matching Zumbo S2 / S2 Dual hardware to avoid display, camera, or modem issues. |
⚠️ Flashing Risks & Disclaimer
Flashing this Zumbo S2 MT6737T firmware carries real risks, including full data wipe, loss of IMEI or calibration data if NVRAM is overwritten, or a hard‑to‑recover brick if the wrong preloader or scatter is used on a different Mobiistar model.
This package is an original Mobiistar Zumbo S2 stock ROM mirrored for preservation, as official public download channels for this exact V14_RC05 build are no longer maintained; all names and software remain the property of their respective owners, and the archive is offered only for legitimate repair and maintenance, without any endorsement or modification.
Download Official Firmware for Mobiistar Zumbo S2 (MT6737T)
The entry below describes the Mobiistar_Zumbo_S2_MT6737T_V14_RC05_07072017.zip firmware, a MediaTek MT6737T stock ROM for Zumbo S2, hosted on MediaFire as a preserved mirror for service use.
| Region / Variant | Filename | Build / Version | Android / Firmware Version | File Type | Build Date | File Size | Download Link |
|---|---|---|---|---|---|---|---|
| Zumbo S2 / S2 Dual MT6737T | Mobiistar_Zumbo_S2_MT6737T_V14_RC05_07072017.zip | V14_RC05_07072017 (MT6737T V14 RC05) | Android 7.0 Nougat | ZIP archive with SP Flash Tool scatter firmware (including preloader, system, boot, recovery) | 07 July 2017 (07072017) | ≈ 1.44 GB (compressed archive) | Download V14 RC05 build (MediaFire mirror) |
This package is an original stock ROM mirrored for preservation, as the manufacturer no longer provides a unified public firmware catalog for the Mobiistar Zumbo S2 MT6737T.
Flashing Requirements
- A Windows PC (Windows 7 or newer) with administrator rights.
- MediaTek USB VCOM / CDC drivers installed so the Zumbo S2 MT6737T is detected correctly in preloader/Download mode.
- SP Flash Tool (a build that supports MT6737T) extracted to a dedicated folder.
- The Mobiistar_Zumbo_S2_MT6737T_V14_RC05_07072017.zip archive fully downloaded and extracted, including the MT6737T Android scatter file.
- A genuine Mobiistar Zumbo S2 or Zumbo S2 Dual handset using the MT6737T SoC, verified from the device label, retail box, or existing system information.
- Battery level ideally above 50% to reduce the risk of interruption during flashing.
- Backup of all important user data where possible, since typical SP Flash operations for this device erase system and user partitions.
- A reliable USB cable and direct motherboard USB port, avoiding hubs that can cause unstable connections while writing firmware.
How to Flash the Firmware
- Download Mobiistar_Zumbo_S2_MT6737T_V14_RC05_07072017.zip for the Zumbo S2, then extract the archive and locate the MT6737T Android scatter file in the firmware folder.
- Install MediaTek VCOM drivers, open SP Flash Tool, click “Scatter‑loading”, and select the MT6737T scatter file so that all partitions for the V14 RC05 firmware are loaded into the tool.
- Choose an appropriate mode (usually “Download Only” for a standard restore on this model), verify that the preloader entry matches the Zumbo S2 firmware, and press the Download button in SP Flash Tool.
- Power off the phone completely, connect it to the PC via USB, and allow the MT6737T preloader to be detected; SP Flash Tool should start writing the firmware and show a progress bar until a green success checkmark appears.
- Disconnect the device and power it on; the first boot into Android 7.0 after flashing can take several minutes while the system rebuilds caches and optimizes apps, which is normal for this firmware line.
For a detailed SP Flash Tool walkthrough on MediaTek devices, including driver installation and common error codes, refer to this external guide: flash MediaTek firmware with SP Flash Tool.
Frequently Asked Questions (FAQs)
Is this V14_RC05 firmware compatible with all Zumbo S2 variants?
This ROM targets Zumbo S2 devices built on the MT6737T platform; it should not be used on other Mobiistar models or on non‑MT6737T variants, as that can break display, camera, or network functions.
Can this firmware fix a Zumbo S2 stuck on the boot logo?
If the boot logo hang is caused by corrupted system or boot partitions from a failed update or modification, a full flash of the MT6737T V14 RC05 stock ROM using SP Flash Tool can often restore normal boot, provided there is no underlying hardware fault.
Will flashing this ROM wipe my personal data?
Yes, typical SP Flash configurations that include system and userdata partitions will erase installed apps and internal data on the Zumbo S2, so backing up photos and important files beforehand is strongly recommended.
Does this firmware change the Android version on the device?
No, this build keeps the phone on Android 7.0 Nougat, which is the original major version for the Zumbo S2; it focuses on restoring the baseline system rather than upgrading to a newer Android release.
Can this ROM help with performance issues on a heavily used Zumbo S2?
Flashing clean stock firmware can remove accumulated software bloat, misconfigured apps, or corrupted data that slow down the device, but it cannot upgrade the MT6737T hardware, RAM, or storage speed limits.
