Fastboot Bulk Flasher Download for Windows – OXYGEN Bulk Flashing Tool
Fastboot Bulk Flasher by OXYGEN is a Windows utility designed to flash firmware on multiple Android devices through Fastboot mode. It can be useful for mobile technicians, repair shops, and Android users who need to perform firmware operations on several compatible devices.
Instead of handling every connected phone separately, a bulk flashing utility can organize multiple devices and display their individual flashing progress. This guide explains the available features, download information, installation preparation, and how to use Fastboot Bulk Flasher safely.
What Is Fastboot Bulk Flasher?
Fastboot Bulk Flasher is a Windows-based Android firmware flashing utility associated with the developer name OXYGEN. Its main purpose is to perform Fastboot firmware operations on multiple connected Android devices.
The tool uses a firmware flashing script, such as flash_all.bat, to load the required operations. It can display connected devices, individual progress information, and the status of ongoing tasks.
This type of utility is particularly useful when technicians need to process multiple compatible devices instead of flashing each device individually.
Fastboot Bulk Flasher Features
The available software listing describes several features of Fastboot Bulk Flasher.
1. Multiple Device Detection
The utility can detect multiple Android devices connected to a Windows computer in Fastboot mode. Each detected device can have its own progress and status information.
2. Firmware Script Loading
Users can browse for a supported flash_all.bat file. The tool reads the firmware script and displays the operations it identifies.
3. Individual Flashing Progress
The interface provides separate progress information for connected devices. This makes it easier to monitor the status of multiple flashing operations.
4. Sparse Mode Options
The listed interface includes sparse mode settings, including Default and Custom options with a configurable MB size.
5. Auto Reboot Option
An Auto Reboot option is available for users who want a device to restart automatically after the flashing process, where supported by the selected firmware script.
6. Firmware Compatibility Checks
The reported safety checks include product-name comparison, anti-rollback checks, and battery-level warnings. These checks can help identify certain compatibility risks before flashing.
However, they should not be treated as a guarantee against firmware errors or device damage.
7. Flashing Logs
The tool is reported to save session logs in the Documents/FastbootBulkFlasher folder. These logs can help technicians review the results of a flashing session.
Fastboot Bulk Flasher Download
The available listing for Fastboot Bulk Flasher by OXYGEN was published on October 28, 2026.
You can review the software information and download instructions through the following third-party page:
Fastboot Bulk Flasher by OXYGEN – Download Information
Important: This is a third-party download listing, not a verified official developer website. Its download process references MEGA and a final download step. Check the file's source, authenticity, and security before running it. Do not install unknown executable files simply because a website describes them as tested or free.
Requirements Before Using Fastboot Bulk Flasher
Before starting a flashing session, prepare your Windows computer and Android devices.
A Windows computer.
Fastboot-compatible Android devices.
A reliable USB data cable for each device.
Compatible Android USB drivers.
Android Platform Tools or the required Fastboot components.
Correct firmware for the exact device model and variant.
Sufficient battery charge on each device.
A backup of important user data.
You can obtain Google's official Android Platform Tools here:
The exact requirements may vary depending on the version of the flasher and the firmware package.
How to Install Fastboot Bulk Flasher on Windows
Follow these general preparation steps before using the utility.
Step 1: Download the Package
Visit the available download information page and review the provided download instructions. Make sure you understand the source of the package before downloading it.
Step 2: Scan the Downloaded File
Before opening the package, scan it with reputable security software. Avoid running files that show suspicious behavior or come from an unknown source.
Step 3: Extract the Files
If the downloaded package is compressed, extract it into a separate folder using a trusted archive utility.
Step 4: Check the Required Files
Open the extracted folder and review the available program files and documentation. Do not run additional scripts or installers unless their purpose and source are clear.
Step 5: Prepare Fastboot Drivers
Install compatible Android USB drivers and verify that Windows can recognize your devices in Fastboot mode.
Step 6: Launch the Utility
If the package has been verified and its requirements are satisfied, launch the application according to the developer's instructions.
How to Use Fastboot Bulk Flasher
The following workflow is based on the features described in the available software listing.
Step 1: Prepare Your Firmware
Extract the correct firmware package for your Android device. Confirm that the firmware is intended for the exact model and regional variant.
Step 2: Locate the Flashing Script
Open Fastboot Bulk Flasher and use the Browse option to select the supported flash_all.bat file.
The utility is described as reading the script and displaying its recognized flashing operations.
Step 3: Connect Android Devices
Connect the compatible devices to your Windows computer in Fastboot mode.
Use the refresh option if available to update the connected-device list.
Step 4: Review the Detected Devices
Check that every connected device appears correctly. Confirm the product name and firmware compatibility before proceeding.
Step 5: Review Flashing Options
Check the sparse mode and Auto Reboot settings. Use only the options appropriate for your firmware package and device.
Step 6: Start the Flashing Process
Review any displayed warnings and start the operation only after confirming that the firmware and target devices are correct.
Step 7: Monitor Progress
Watch the individual progress indicators and status messages. Avoid disconnecting devices or shutting down the computer during an active operation.
Step 8: Check the Results
After the process finishes, review the status of each device and examine the session logs for errors.
Common Fastboot Bulk Flasher Problems
Device Not Detected
If a connected phone does not appear, check the USB cable, port, drivers, and Fastboot connection mode.
You can also open Command Prompt in the Android Platform Tools folder and run:
fastboot devices
If the device is not listed, troubleshoot the connection before using the flasher.
Fastboot Driver Error
A missing or incompatible USB driver can prevent Windows from communicating with an Android device. Install a compatible driver package and check the device status in Windows Device Manager.
Firmware Script Not Loading
Make sure you selected the correct flash_all.bat file and that the firmware package is fully extracted. A missing or modified script may not be recognized correctly.
Flashing Stops Unexpectedly
Check the USB connection, battery level, firmware compatibility, and error messages. Review the saved session log before attempting another operation.
Device Fails to Boot After Flashing
A device may fail to boot if the firmware is incompatible, an important partition was not flashed correctly, or the flashing process was interrupted.
Do not repeatedly flash random firmware packages. Identify the exact model and firmware build before attempting recovery.
Safety Tips Before Bulk Flashing
Bulk flashing can affect several devices at the same time, so careful preparation is essential.
Verify the model and product name of every connected device.
Use firmware intended for each exact device variant.
Check anti-rollback restrictions before flashing.
Ensure sufficient battery charge.
Back up important data whenever possible.
Avoid disconnecting USB cables during flashing.
Do not interrupt critical bootloader operations.
Keep a copy of the original firmware and relevant logs.
Never lock a bootloader unless the firmware and device configuration are confirmed compatible.
A flashing utility's safety checks cannot eliminate every risk. Incorrect firmware or an interrupted operation can make a device unusable.
Frequently Asked Questions
What Is Fastboot Bulk Flasher Used For?
Fastboot Bulk Flasher is designed to perform Fastboot firmware operations on multiple compatible Android devices from a Windows computer.
Who Developed Fastboot Bulk Flasher?
The available software listing identifies OXYGEN as the developer name.
Can Fastboot Bulk Flasher Flash Multiple Phones?
The tool is specifically described as supporting bulk flashing, with separate device detection and progress information for connected phones.
Does Fastboot Bulk Flasher Support Windows?
The available listing identifies Windows as its supported operating system. Check the package documentation for exact Windows version requirements.
What Is a Flash All BAT File?
A flash_all.bat file is a Windows batch script commonly included in certain Android firmware packages. It contains commands used to perform firmware flashing operations through Fastboot.
Is Fastboot Bulk Flasher an Official Google Tool?
No. It is a separate utility associated with OXYGEN. Google's Android Platform Tools provide the official ADB and Fastboot command-line utilities.
Conclusion
Fastboot Bulk Flasher by OXYGEN is a Windows utility intended to simplify firmware flashing across multiple compatible Android devices. Its described features include bulk device detection, firmware script loading, individual progress indicators, sparse mode settings, and session logs.
Before downloading or using the tool, verify the package source, prepare the correct Fastboot drivers, and check firmware compatibility for every connected device. Careful preparation is essential to reduce the risk of data loss or firmware-related problems.