For new users, please read about PerfectDynamics 3.0 Sound Optimizations first for new improvements with Fidelizer ROMs.
The next device that receives PerfectDynamics 3.0 update is Fiio X7ii. Since this model has both global and Japan version, it took a while to finish cooking both of them.
I recommend to flash official global ROM (1.1.0) or Japan ROM (1.1.2 JP) before flashing Purist ROM version to make sure you get the same partition alignment. Cross flashing will make device unbootable and may corrupt device’s data.
-Based on firmware version 1.1.0 / 1.1.2 JP
-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 X7ii Purist ROM | Fiio X7ii Purist ROM (JP version)
Installation Guide
1. Download X7ii Firmware Upgrade Tool
2. Turn off Fiio X7ii
3. Connect X7ii with USB connection to computer while holding previous track button
4. Install RK USB driver included in Firmware Upgrade Tool and replace update.img image with Fidelizer Purist ROM version
5. Open X7II(Chinese text).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. 🙂