The Eurostar Onyx 3 M20 ES5515 is an entry-level Android smartphone built on the MediaTek MT6580 3G platform and originally shipped with Android 5.1 Lollipop. The firmware package Eurostar_Onyx_3_M20_ES5515_MT6580_V5_V1.0.4_5.1.zip is a full stock ROM for this device, intended for SP Flash Tool or compatible MTK flashing utilities to recover from bootloops, software corruption, or failed modifications.
Flashing this ROM can help restore factory software, remove incompatible customizations, or resolve OS-level instability, but it generally wipes user data.
Eurostar Onyx 3 M20 Firmware Details
| Device Name | Eurostar Onyx 3 M20 |
|---|---|
| Model Identifier | ES5515 (printed in firmware name and common listings) |
| Codename / Board | MT6580‑based Eurostar board (scatter project for MT6580) |
| Chipset / Platform | MediaTek MT6580, quad‑core Cortex‑A7, 3G only |
| Launch Android Version | Android 5.1 Lollipop |
| Current Firmware Line | V5_V1.0.4 Android 5.1 stock build for ES5515 |
| Typical File Size Range | ≈ 700–800 MB compressed stock ROM archive |
| Firmware Type | MediaTek scatter-based stock ROM (SP Flash Tool compatible) |
| Flashing Tool | SP Flash Tool (MTK) or equivalent MT6580 flashing utility |
| Bootloader Requirement | No user bootloader unlock; requires MTK preloader/DA handshake via USB |
| Region / Branch Notes | Single Eurostar Onyx 3 M20 ES5515 build; do not flash on other Onyx/Eurostar models or non‑MT6580 devices |
⚠️ Flashing Risks & Disclaimer
This ROM is built for the Eurostar Onyx 3 M20 ES5515 on MT6580 only; flashing it on a different Eurostar model, different SoC, or mismatched hardware revision can hard‑brick the phone, break the touchscreen, or cause network and camera malfunctions. SP Flash Tool writes low‑level partitions including preloader, boot, and system, so using the wrong scatter or interrupting the flash can lead to a “dead” device that is not recognized over USB without professional repair tools.
All flashing is done at the user’s own risk. Confirm that the handset is an Onyx 3 M20 ES5515 with MT6580, verify that the firmware file name matches Eurostar_Onyx_3_M20_ES5515_MT6580_V5_V1.0.4_5.1.zip, and ensure a stable PC, cable, and adequate battery before proceeding.
Download Official Firmware for Eurostar Onyx 3 M20
| Region / Variant | Filename | Build / Version | Android / Firmware Version | File Type | Build Date | File Size | Download Link |
|---|---|---|---|---|---|---|---|
| Global (ES5515 MT6580) | Eurostar_Onyx_3_M20_ES5515_MT6580_V5_V1.0.4_5.1.zip | V5_V1.0.4 | Android 5.1 Lollipop | Stock ROM ZIP (contains MT6580 scatter + images) | Not specified (Android 5.1 generation) | ≈ 750.09 MB | Download Eurostar Onyx 3 M20 ES5515 ROM (MediaFire) |
Flashing Requirements
- A Windows PC with MediaTek VCOM/Preloader USB drivers installed so the ES5515 (MT6580) device is detected when powered off and plugged in.
- SP Flash Tool (or a trusted MT6580‑compatible alternative) to load the scatter file and flash individual partitions from the extracted ZIP.
- The fully extracted Eurostar_Onyx_3_M20_ES5515_MT6580_V5_V1.0.4_5.1.zip, containing the MT6580 scatter (.txt) and partition images (preloader, boot, recovery, system, etc.).
- A reliable USB cable and direct PC USB port (avoid damaged cables or low‑power hubs that can disrupt the flashing session).
- Battery level at a safe margin, ideally 50% or higher, to reduce the risk of power loss mid‑flash.
- Verification that the device is indeed Onyx 3 M20 ES5515 (back cover/label or about‑phone info) and uses an MT6580 SoC; do not reuse this scatter on other Eurostar or generic MTK phones.
How to Flash the Firmware
- Confirm the phone is Eurostar Onyx 3 M20 ES5515 with MediaTek MT6580 and that the firmware file name matches Eurostar_Onyx_3_M20_ES5515_MT6580_V5_V1.0.4_5.1 before extracting it on your PC.
- Install MTK VCOM/Preloader drivers, launch SP Flash Tool, and in the “Download” tab load the MT6580 scatter file from the extracted firmware folder.
- Choose the desired flashing mode (for full recovery, typically “Download Only” with all main partitions ticked; avoid formatting nv partitions unless necessary), then power off the phone completely.
- Click “Download” in SP Flash Tool and connect the powered‑off Onyx 3 M20 ES5515 to the PC via USB; the tool should detect the MT6580 preloader and start flashing the specified partitions.
- Wait until SP Flash Tool shows a success message, then disconnect the phone and power it on; first boot into Android 5.1 may take several minutes as the system initializes and optimizes apps after the fresh ROM install.
For a step‑by‑step reference on using SP Flash Tool with MTK scatter ROMs like this MT6580 package, consult this guide: How to flash MediaTek firmware with SP Flash Tool.
Frequently Asked Questions (FAQs)
Is this ROM only for the Eurostar Onyx 3 M20 ES5515?
Yes, the package explicitly targets Onyx 3 M20 ES5515 with MT6580 and should not be flashed on other Eurostar models or non‑MT6580 phones to avoid hard‑bricks.
Can this firmware remove a custom ROM or root from the device?
Flashing the full stock ROM overwrites system and boot partitions, so it can remove most custom ROMs and root changes and restore the factory Android 5.1 software, though data is usually wiped.
What issues can this stock ROM realistically help to fix?
It can help resolve software problems such as bootloops, OS crashes, severe app errors after malware or bloat, and failed system updates, but it cannot fix hardware defects like faulty displays or damaged basebands.
Do ES5515 variants from different regions use the same firmware?
Most ES5515 Onyx 3 M20 units share the same MT6580 base and stock build line, but using an image clearly labeled for this exact model and version (V5_V1.0.4_5.1) is recommended for best compatibility.
Can professional MTK tools be used instead of SP Flash Tool?
Service boxes and advanced MTK tools that support MT6580 can flash the same images if configured correctly, but such workflows are aimed at technicians and require extra care.
Is flashing necessary for pattern/PIN lock removal on this device?
For pure lock issues without deeper system damage, a factory reset from stock recovery may be sufficient, and avoids the higher risk and complexity of a full SP Flash operation.
