Download Xiaomi 12S EDL Loader (prog_firehose_ddr) – Unbrick Tool
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Stuck in Qualcomm HS-USB QDLoader 9008? Get the tested prog_firehose_ddr_mayfly.elf file. Essential for repairing dead boot, fixing partition corruption, and flashing raw firmware on the Xiaomi 12S.
The Xiaomi 12S (Codename: mayfly) is a premium device featuring the powerful Qualcomm Snapdragon 8+ Gen 1 (SM8475). While robust, incorrect flashing, system updates, or software corruption can lead to a “Hard Brick,” where the device is only detected as Qualcomm HS-USB QDLoader 9008. To revive it, you need the specific Firehose Loader (Programmer) file tailored for the SM8475 platform.
File Information & Specs
| File Name | prog_firehose_ddr_mayfly.elf |
| Device Name | Xiaomi 12S |
| Codename | mayfly |
| Chipset | Snapdragon 8+ Gen 1 (SM8475) |
| File Type | EDL Loader / Firehose Programmer |
| Function | Unbrick, Factory Reset, FRP Remove, Flash Firmware |
| Auth Requirement | Yes (Or Specialized Tool) |
| Connection Mode | EDL Mode (9008) |
Supported Tools
Due to the secure nature of the Snapdragon 8+ Gen 1, standard free tools may not fully support this loader without authentication. It is recommended to use updated professional service tools:
- UnlockTool (Recommended)
- Chimera Tool
- UMT (Ultimate Multi Tool) – QcFire
- Hydra Tool
- Miflash Pro (Requires Xiaomi Auth Account)
How to Use Firehose Loader
- Install Drivers: Ensure the latest Qualcomm HS-USB QDLoader 9008 driver is installed on your PC.
- Open Flashing Tool: Launch your preferred professional tool (e.g., UnlockTool).
- Select Model: Search for “Xiaomi 12S” or “mayfly”.
- Load Custom Loader: If the tool does not auto-detect the loader, manually select the
prog_firehose_ddr_mayfly.elffile in the “Custom Programmer” field. - Connect Device: Boot your Xiaomi 12S into EDL Mode. (Note: This often requires shorting specific Test Points on the motherboard behind the back cover).
- Execute Repair: Click Flash or Factory Reset to begin the unbricking process.
⚠️ DISCLAIMER: Advanced Chipset Warning
The Xiaomi 12S uses the Snapdragon 8+ Gen 1 (SM8475), which has strict security protections. Using an incorrect or old Firehose file can permanently destroy the UFS storage. Ensure you are using the specific loader for mayfly. If you do not have a professional tool or Auth account, proceed with extreme caution.
