Mobiistar Prime X Grand is a 2016 Android smartphone built on the MediaTek MT6753 octa-core platform and originally shipped with Android 5.1 Lollipop. This model targets mid‑range users with a 5.5‑inch full HD IPS display, 3 GB RAM, and LTE support, making stable firmware important for recovery after software issues.
The firmware package on this page is a preserved stock ROM that can help recover from bootloops, failed modifications, or corrupted system software by restoring the phone to a clean factory state. Use it only on the correct Mobiistar Prime X Grand variant to avoid incompatibility or boot failure.
Mobiistar Prime X Grand Firmware Details
| Field | Information |
|---|---|
| Device Name | Mobiistar Prime X Grand TD‑LTE Dual SIM |
| Model Identifier | Prime X Grand (MT6753‑based TD‑LTE Dual SIM family) |
| Codename | Not publicly documented / not confirmed |
| Chipset / Platform | MediaTek MT6753, 64‑bit octa‑core with Mali‑T720 GPU |
| Launch Android Version | Android 5.1 Lollipop |
| Current Firmware Line | Stock Mobiistar Android 5.1 (no custom OEM skin beyond standard UI) |
| Firmware Type | Scatter‑based stock ROM for service flashing (package distributed in ZIP form) |
| Flashing Tool | SP Flash Tool (MediaTek download mode) |
| Bootloader Requirement | Designed for factory/service flashing on locked stock bootloader via preloader/DA; no user OEM unlock flow is required. |
| Region / Branch Notes | Packaged generally for Prime X Grand MT6753 variants commonly sold in Vietnam and nearby markets; cross‑flash to other models is not supported. |
| Typical File Size Range | This package: 1006 MB (ZIP archive) |
| Scatter / Package Contents | MT6753 scatter‑based layout suitable for “Download Only” or “Firmware Upgrade” modes in SP Flash Tool (with full partition images). |
| Verification Note | Flashing tool family verified via external references for this exact filename. |
⚠️ Flashing Risks & Disclaimer
Flashing a MediaTek MT6753 scatter ROM with SP Flash Tool carries real risks, including loss of IMEI/NVRAM if inappropriate options are used and potential hard‑brick if an incompatible preloader is written. Only trained or experienced users should perform this procedure, and all critical data (including NVRAM/NVDATA where possible) should be backed up before proceeding. The firmware package and all related trademarks remain the property of their respective owners and are provided strictly for restoring legitimately owned Mobiistar Prime X Grand devices to working software condition.
Download Official Firmware for Mobiistar Prime X Grand
This stock ROM is preserved on a third‑party mirror because original Mobiistar download channels for this model are no longer publicly available. This package is an original stock ROM mirrored for preservation, as the manufacturer no longer provides public downloads for this model.
| Region / Variant | Filename | Build / Version | Android / Firmware Version | File Type | Build Date | File Size | Download Link |
|---|---|---|---|---|---|---|---|
| Global / Vietnam retail MT6753 | Mobiistar_Prime_X_Grand_MT6753_V2_16102017_5.1.zip | V2 16102017 | Android 5.1 Lollipop stock ROM | ZIP (SP Flash Tool scatter package inside) | 2017‑10‑16 (from filename tag 16102017) | 1006 MB (approx. 1005.6 MB reported) | Download V2 16102017 (MediaFire mirror) |
Flashing Requirements
- Windows PC recommended for SP Flash Tool (most well‑documented builds target Windows; Linux builds exist but are less commonly used for this device family).
- SP Flash Tool compatible with MT6753 devices and MediaTek VCOM/Preloader USB drivers installed on the computer.
- USB cable in good condition and a stable USB port, preferably connected directly to the motherboard rather than a hub.
- Battery charged to at least 40–50% to reduce the chance of power‑loss‑related flash failure.
- Full backup of user data, because a clean “Firmware Upgrade” or full “Download Only” flash (including system/userdata) can erase installed apps and personal files.
- Confirmation that the phone is actually Mobiistar Prime X Grand MT6753 by checking model labels and device specifications before flashing.
How to Flash the Firmware
- Download the Mobiistar_Prime_X_Grand_MT6753_V2_16102017_5.1 firmware ZIP, then extract it on the PC and confirm that an MT6753 scatter file and partition images are present in the folder.
- Install MediaTek VCOM/Preloader USB drivers and launch SP Flash Tool inside a compatible environment (preferably Windows), then load the extracted MT6753 scatter file from the firmware directory.
- In SP Flash Tool, choose an appropriate mode—typically “Download Only” for basic recovery, or “Firmware Upgrade” when performing a full system refresh—and ensure preloader is only ticked if recovery demands it and device compatibility is certain.
- With the phone powered off, connect the Mobiistar Prime X Grand to the PC via USB and click “Download” in SP Flash Tool when the device enters preloader mode and is detected.
- Wait for SP Flash Tool to complete and show a success message, then disconnect and power on the device; the first boot can take several minutes as Android 5.1 optimizes apps and rebuilds cache.
For a more detailed walk‑through of SP Flash Tool usage on MediaTek devices, see this external guide: How to flash MediaTek firmware with SP Flash Tool.
Frequently Asked Questions (FAQs)
Can this firmware be used on any Mobiistar device with MT6753?
No, this package is built specifically for Mobiistar Prime X Grand with MT6753 and matching partition layout. Using it on other MT6753 models (even from the same brand) can cause serious boot or radio issues.
Is an unlocked bootloader required for this stock ROM?
No; SP Flash Tool works at preloader level and is intended for service use on standard locked‑bootloader MT6753 phones like the Prime X Grand.
Can this ROM fix bootloops after a failed custom ROM or root attempt?
Restoring the full stock firmware (including system, boot, and vendor partitions) can often resolve software‑induced bootloops on this device, provided the correct Prime X Grand MT6753 hardware is used.
What are the main risks of flashing the preloader on Prime X Grand?
Flashing an incorrect or corrupted preloader image can prevent the phone from entering normal preloader mode, making detection difficult and potentially requiring specialized hardware tools to recover.
Is the MediaFire link an official Mobiistar server?
No, the MediaFire URL is a third‑party mirror hosting an original stock package for preservation because Mobiistar’s public firmware distribution for this model is no longer active.
Can this firmware downgrade or upgrade Android to a different major version?
This build is Android 5.1 Lollipop and is meant to match the original OS line; it does not provide an official upgrade to Nougat or higher for Mobiistar Prime X Grand.
SP Flash Tool does not detect the phone. What should be checked?
Verify that MTK VCOM drivers are properly installed, try another USB port or cable, and ensure the phone is fully powered off (sometimes with battery reinserted) before connecting to trigger preloader mode.
