The Homtom Zoji Z33 is a rugged Android smartphone based on the MediaTek MT6739 quad-core platform, originally shipped with Android 8.1 Oreo and 3 GB RAM / 32 GB storage. As a durable outdoor-focused device, it is often used in harsh environments where unexpected shutdowns, storage exhaustion, or failed OTA updates can lead to persistent bootloops or soft-bricks.
Flashing the stock firmware package below can help recover the phone from software corruption, remove unstable modifications, or restore the system after a failed update, provided the correct build and model are used.
Homtom Zoji Z33 Firmware Details
| Device Name | Homtom Zoji Z33 rugged smartphone |
| Model Identifier | Zoji Z33 (3 GB RAM / 32 GB storage) |
| Codename | k39tv1_bsp (MT6739 project tag from firmware) |
| Chipset / Platform | MediaTek MT6739, quad-core Cortex-A53, PowerVR GE8100 GPU |
| Launch Android Version | Android 8.1 Oreo |
| Current Firmware Line | Android 8.1 Oreo stock ROM, build V1.0.9 (2018-11-23) |
| Typical File Size Range | Approximately 1.0–1.1 GB for full scatter-based firmware package |
| Firmware Type | Scatter-based stock ROM for SP Flash Tool (MTK) |
| Flashing Tool | SP Flash Tool (MediaTek firmware flashing utility) |
| Bootloader Requirement | Standard MTK download mode; usually no user-unlock needed for stock service flashes on this model |
| Region / Branch Notes | Single global hardware variant; firmware built for Zoji Z33 MT6739 project k39tv1_bsp, not intended for other Homtom or Zoji models |
⚠️ Flashing Risks & Disclaimer
Flashing this Homtom Zoji Z33 stock ROM directly overwrites low-level partitions such as system, boot, and potentially preloader and nvram, which are tightly coupled to the MT6739 platform and the k39tv1_bsp project configuration. Using an incorrect scatter file or mixing images from another MT6739 device can lead to a non-booting phone, display initialization failures, or loss of modem calibration, which may break LTE bands and network registration on this model.
Firmware packages linked here are original stock ROMs preserved via third-party hosting, as the manufacturer no longer provides public downloads for this device. This material is provided strictly for recovery and maintenance purposes; all trademarks, ROM components, and software remain the property of their respective owners, and no modification or rebranding of the underlying firmware is implied.
Download Official Firmware for Homtom Zoji Z33
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 (Zoji Z33 MT6739) | Homtom_Zoji_Z33_MT6739_V1.0.9_181123.zip | GF36_Z33_V1.0.9_20181123 / full_k39tv1_bsp-user 8.1.0 O11019 1541666959 release-keys | Android 8.1 Oreo stock ROM | ZIP archive containing scatter-based MTK firmware + SP Flash Tool | 23 November 2018 (20181123) | ≈ 1.0–1.1 GB (archive size) | Download Zoji Z33 stock ROM (preserved mirror) |
Flashing Requirements
- A Windows PC (typically Windows 7 or newer) with administrator access to install MediaTek VCOM/Preloader USB drivers.
- SP Flash Tool compatible with MT6739, such as a v5.x build included in some firmware archives or downloaded separately.
- The correct scatter file for the Zoji Z33 MT6739 project (k39tv1_bsp) from the downloaded archive, matching this specific device only.
- A good quality USB cable and a stable USB port, as intermittent connections during download mode can corrupt partitions on this phone.
- Battery level preferably above 40% to reduce the risk of power loss mid-flash on this rugged device.
- Full backup of user data, as a clean flash or “Format + Download” procedure will erase apps, settings, and internal storage content.
- Verification that the device label and About screen (if still bootable) indicate Homtom Zoji Z33, MT6739, and 3 GB / 32 GB configuration before flashing.
How to Flash the Firmware
- Download the Homtom_Zoji_Z33_MT6739_V1.0.9_181123.zip package to the PC and extract it, then confirm that the MT6739 scatter file and Zoji Z33 images are present in the firmware folder.
- Install MediaTek VCOM/Preloader drivers, launch SP Flash Tool, and load the included scatter file associated with the k39tv1_bsp project for this device.
- Choose the appropriate flash mode in SP Flash Tool (for example, “Download Only” for a repair flash, or “Format + Download” only if a full clean reinstall is required and nvram backups are available).
- Power off the Zoji Z33 completely, connect it to the PC via USB, and let SP Flash Tool detect the phone in preloader download mode to start writing the selected partitions.
- After the operation completes and SP Flash Tool reports success, disconnect the phone, power it on, and allow extra time for the first Android 8.1 Oreo boot, as the system will rebuild caches and optimize apps on this MT6739 platform.
For a more detailed SP Flash Tool walkthrough, refer to this step-by-step guide: How to flash MediaTek firmware with SP Flash Tool.
Frequently Asked Questions (FAQs)
Can this firmware be used on other Homtom or Zoji models with MT6739?
No. This ROM is built specifically for the Homtom Zoji Z33 based on the k39tv1_bsp project and MT6739 platform, and flashing it on another MT6739 phone can cause display, modem, or boot issues.
How can the correct Zoji Z33 variant be verified before flashing?
Check the device branding, RAM/storage (3 GB / 32 GB), and MT6739 chipset information from the original box or About screen if accessible, and ensure the phone is labeled as Zoji Z33 rather than a different Homtom rugged model.
Does flashing this stock ROM erase user data on the Zoji Z33?
A full “Format + Download” or clean flash in SP Flash Tool will wipe apps, settings, and local files, while a carefully configured “Download Only” flash may preserve data but is less reliable on heavily corrupted systems.
Is it safe to cross-flash this build on devices from another sales region?
The Zoji Z33 generally targets a single global hardware configuration, but LTE band support and modem calibration are tied to this exact model, so cross-flashing onto regionally different hardware is not recommended.
Can this firmware help recover a Zoji Z33 stuck after a failed OTA or heavy app load?
Yes, reinstalling the full V1.0.9 stock ROM can help recover units that entered a bootloop after failed OTA updates or severe software overload, as it replaces damaged system and boot partitions with known-good images.
Does using SP Flash Tool with this ROM affect the device warranty?
Warranty policies for the Homtom Zoji Z33 vary by seller and region, but using service tools like SP Flash Tool outside of an authorized center can be treated as an unsupported repair and may impact coverage.
