For new users, please read about PerfectDynamics 2.0 Sound Optimizations first for new improvements with Fidelizer ROMs.
Hi. It seems I have files from other devices mixed in during creating X7 ROM images. My apologies. I rebuilt again from scratch and verify it’s built from the right one this time.
-Based on firmware version 3.3.9
-Fiio Music app 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.
There’s a lot of improvements for Advanced ROM and I also added Enhanced ROM into collection too. Please read Portable Products for more details including Fidelizer Mod project with 3 modification levels. Happy listening. 🙂