|[What has changed?](#what-has-changed) | **[Setup and build for Linux](/doc/md/Installation_Instructions/Linux-Installation-Instructions.md)** | [Compilation Instructions](/doc/md/Use_of_Proxmark/0_Compilation-Instructions.md)|
|[Development](#development) | **[Important notes on ModemManager for Linux users](/doc/md/Installation_Instructions/ModemManager-Must-Be-Discarded.md)** | [Validating proxmark client functionality](/doc/md/Use_of_Proxmark/1_Validation.md) |
|[Why didn't you base it on official Proxmark3 Master?](#why-didnt-you-base-it-on-official-proxmark3-master)| **[Homebrew (Mac OS X) & Upgrading HomeBrew Tap Formula](/doc/md/Installation_Instructions/Mac-OS-X-Homebrew-Installation-Instructions.md)** | [First Use and Verification](/doc/md/Use_of_Proxmark/2_Configuration-and-Verification.md)|
|[Proxmark3 GUI](#proxmark3-gui)|**[Setup and build for Windows](/doc/md/Installation_Instructions/Windows-Installation-Instructions.md)**|[Commands & Features](/doc/md/Use_of_Proxmark/3_Commands-and-Features.md)|
|[Notes on external flash](/doc/ext_flash_notes.md)|[Notes on loclass](/doc/loclass_notes.md)|[Notes on Coverity Scan Config & Run](/doc/md/Development/Coverity-Scan-Config-%26-Run.md)|
In order to build this repo for other Proxmark3 platforms we urge you to read [Advanced compilation parameters](/doc/md/Use_of_Proxmark/4_Advanced-compilation-parameters.md)
> ⚠ **Note**: This is a bleeding edge repository. The maintainers actively is working out of this repository and will be periodically re-structuring the code to make it easier to comprehend, navigate, build, test, and contribute to, so **DO expect significant changes to code layout on a regular basis**.
The [public roadmap](https://github.com/RfidResearchGroup/proxmark3/wiki/Public-Roadmap) is an excellent start to read if you are interesting in contributing.
Please search the [issues](https://github.com/rfidresearchgroup/proxmark3/issues) page here and see if your issue is listed in the first instance. Next place to visit is the [Proxmark Forum](http://www.proxmark.org/forum/index.php). Learn to search it well and finally Google / duckduckgo is your friend :) You will find many blogposts, youtube videos, tweets, reddit
Read the [Troubleshooting](/doc/md/Installation_Instructions/Troubleshooting.md) guide to weed out most known problems.
The separation from official Proxmark3 repo gives us a lot of freedom to create a firmware/client that suits the RDV40 features. We don't want to mess up the official Proxmark3 repo with RDV40 specific code.
The new universal GUI will work. [Proxmark3 Universal GUI](https://github.com/burma69/PM3UniversalGUI) Almost, change needed in order to show helptext when client isn't connected to a device.