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Flipper Zero: MTP

See this in action on YouTube!

Build Status

Nightly Build Release Build
Nightly Build Release Build

What is this?

f0-mtp is a application that implements MTP (Media Transfer Protocol) defined by USB-IF on Flipper Zero.
This allows you to access the Flipper Zero's internal and SD card storages from your computer without the need of any additional drivers like HID-File-Transfer.

If your computer can handle Android devices, it should be able to handle Flipper Zero as well with this application.

Due to limitation of the Flipper Zero's hardware, The MTP connection utilizes Full Speed USB, which is USB 1.1 (12Mbps). which may be slow™.

Note

Flipper Zero utilizes SPI for SD card, which speed is limited to around 1MB/s.
So, the speed of the MTP connection probably will not the bottleneck here.
So, If you need quick copy, Use a proper SD Card Reader.

Before using...

Here are some things you should know before using this application:

Warning

DO NOT transfer files over 64K in one go.
This will:

  • Crash the Flipper if the file is too big.

And might :

  • Corrupt the SD Card filesystem due to current implementation's limitation. (If you know how to fix this issue, feel free to give me a PR!, quick chkdsk will fix the corruption though)

Warning

DO NOT use UNICODE characters in the file/directory names.
Flipper Zero's filesystem isn't designed to handle UNICODE characters. such as:

  • 한글.txt
  • 日本語.txt
  • 中文.txt

Features

  • Access Internal and SD card storages
  • List files and directories
    • Navigate directories
  • Opening Files (Downloading Flipper files into Computer)
    • Large file transfer now WORKS!
      • It didn't work since the header did not have proper size defined, ignoring the further packets.
      • Now utilizing even less memory via streaming support!
  • Move Files into Flipper
    • NEW! Now you can upload files to Flipper Zero!
    • Note: Flipper Zero has limited memory, please refrain from moving files bigger than 64K on one go. (for me 80K was a hard limit)
  • Deleting Files/Directories
  • Move Files/Directories
  • Create Directories (Renaming not supported)
  • Actual Serial Number, Model Name, Firmware Version is now shown in the MTP client.

Known Issues

  • Renaming directories, files are not supported yet.
  • Fix "memory leaks"
    • I'm currently busy working on code cleanup. So, I can't afford to do this right now.

How to build

See HOW_TO_BUILD.md for more information.

Special Thanks

and Special NOT Thanks to:

  • Microsoft for making the MTP Spec so hard to understand. >:(
  • Microsoft for reserving place for programmers to live in WideChar and MultiByte hellscape. >:(

License

This project is licensed under the MIT License - see the LICENSE file for details.