The Archos 55 Helium Plus is a 5.5-inch 4G LTE smartphone from 2015, offering a large HD display for media and browsing. It is powered by the MediaTek MT6735 quad-core processor and runs on Android 5.1 Lollipop. This guide provides the official stock firmware package to perform a full software restoration on your device.
This is a complete firmware package designed to be installed using the SP Flash Tool. It is the definitive solution for a range of critical software problems, including a bricked or dead phone, a device stuck on the Archos boot logo, or network-related issues like a lost 4G signal.
⚠️ Data Deletion Warning
The flashing process will completely erase all data from your phone’s internal storage, including:
- Contacts and call logs
- Messages and chat history
- Photos, videos, and files
- Installed apps and settings
Please back up your data before proceeding. This action is irreversible and your information cannot be recovered once erased.
Quick Device Specs
- Device: Archos 55 Helium Plus
- Release year: 2015
- Chipset: MediaTek MT6735
- Display: 5.5″ IPS LCD, 720 x 1280 pixels
- RAM/Storage: 1GB/8GB
- Battery: 2700 mAh
- Original OS: Android 5.1 (Lollipop)
Required Downloads
To flash this firmware, you will need the SP Flash Tool software and the correct MediaTek VCOM USB drivers for your Windows PC. You can find secure links to download these essential utilities in our main guide, which is linked in the how-to section below.
- The firmware package from the table below
- SP Flash Tool
- MediaTek VCOM USB Drivers
Official Stock Firmware (ROM)
| Build Version | Android Version | Type | Download |
|---|---|---|---|
| V010 (2015-12-09) | 5.1 Lollipop | Stock ROM (SP Flash Tool) | Download |
How to Flash Stock Firmware
To restore the software on your Archos 55 Helium Plus, you will use the SP Flash Tool on a PC. First, ensure the MediaTek VCOM drivers are properly installed. Launch the tool, load the MT6735_Android_scatter.txt file from the extracted firmware folder, and select the “Download Only” mode. Click the “Download” button. Power off your phone completely, then connect it to your PC with a USB cable to start the flashing process.
For a complete, step-by-step walkthrough, driver downloads, and troubleshooting, please refer to our detailed pillar guide: How to Flash Stock Firmware with SP Flash Tool.
Device-Specific Troubleshooting for Archos 55 Helium Plus
- Restoring Lost 4G Signal / Invalid IMEI: A common issue on MediaTek devices after a bad flash or root attempt is the corruption of the NVRAM, leading to a lost IMEI number and no network signal. Flashing this full stock ROM is the essential first step to fix this by restoring the original modem files. If the IMEI is still null after flashing, a separate tool may be needed to repair it.
- PC Not Detecting the Phone: This is the most common problem and is always caused by a driver issue. Uninstall any other mobile phone drivers, restart your PC, and do a fresh install of the MediaTek VCOM drivers. The phone should only be connected after clicking “Download” in the tool.
- SP Flash Tool “PMT changed for the ROM” Error: If you see this error, the partition layout on your phone is different from the firmware’s. To solve this, change the dropdown option in SP Flash Tool from “Download Only” to “Firmware Upgrade” and try flashing again.
- Slow Performance on Lollipop: With 1GB of RAM, Android 5.1 can become sluggish over time. A clean flash with this stock ROM is the best way to restore the phone to its original performance by removing software clutter and junk files.
FAQs
- Q1. My Archos 55 Helium Plus is dead after a failed update. Will this fix it?
- Yes. This full firmware package is designed to overwrite the entire software system, including a corrupted bootloader or system partition, and will unbrick a phone with software-related issues.
- Q2. Can I use this on other Archos Helium models, like the 50 Helium or 55 Helium Ultra?
- No, absolutely not. Firmware is specific to the exact model and chipset. This ROM is only for the Archos 55 Helium Plus and will brick other devices.
- Q3. Will I lose my data by flashing this firmware?
- Yes, the SP Flash Tool process will completely erase the phone’s internal storage, deleting all your personal data and restoring it to factory settings.
- Q4. What version of Android is this?
- This is the official stock firmware for Android 5.1 Lollipop for the Archos 55 Helium Plus.
