For new users, please read about PerfectDynamics 3.0 Sound Optimizations first for new improvements with Fidelizer ROMs.

 

Hi guys. Now I’ve finished the last DAP in Fiio X series with PerfectDynamics 3.0 update. Now I can focus updating on iBasso and other DAPs soon. 🙂

 

-Based on firmware version 3.3.9
-De-odexed for better ART runtime optimizations
-PerfectDynamics 3.0 Sound Optimizations applied
-Fiio Music app version 1.2.0 updated with Fidelizer optimizations
-Apollo – Fidelity Edition from https://forum.xda-developers.com/android/apps-games/apollo-music-player-fidelity-edition-t3038629 included
-build.prop tweaks for better video and storage performance and improve battery life
-bundled audio effects removed but keep main engine (Poweramp works now)

Download: Fiio X7 Purist ROM

 

Installation Guide

1. Download X7 Firmware Upgrade Tool
2. Turn off Fiio X7
3. Connect X7 with USB connection to computer while holding volume up button
4. Install RK USB driver included in Firmware Upgrade Tool and replace update.img image with Fidelizer Purist ROM version
5. Open X7 Firmware Upgrade Tool.exe and press the green button in middle right flash the ROM

 

For Mac / Linux users, please check this guide for flashing Fidelizer Purist ROM on Mac / Linux instructions.

 

If you like improvements in Purist ROM, you may upgrade to Enhanced / Advanced ROM for even better sound. Please read Portable Products for more details including Fidelizer Mod project with 3 modification levels and happy listening. 🙂