I’ve been busy with hardware products for a while so it took some days to finish Purist ROM update for iBasso DX220Max update. Here it is and enjoy. 🙂
-Based on iBasso DX220Max firmware version V1.02.143
-PerfectDynamics 3.0 Sound Optimizations applied
-Google Play Store added
-Apollo – Fidelity Edition from https://forum.xda-developers.com/android/apps-games/apollo-music-player-fidelity-edition-t3038629 included
-MangoPlayer app has optimizations applied
-build.prop tweaks for better video and storage performance and improve battery life
-Audio engine optimized for only audio playback (EQ/Gaplass features work)
Download: iBasso DX220Max Purist ROM
Installation Guide
1. Install Rockchip USB driver included in iBasso DX220Max Upgrade Tool and make sure it shows ‘Found One ADB device’ in AndroidTool software
2. Extract OTA ROM from Official Oreo ROM firmware to DX220Max’s internal storage and flash from Settings > System > Updater > Local storage
3. After successfully flashing official ROM, go to Settings > System > About tablet and tap “Build number” for 7 times to enable “Developer options”
4. Tap back arrow to enter “Developer options”, enable “USB debugging”, and press OK
5. Connect DX220Max to computer with USB connection in Android mode again and press OK to allow USB debugging
6. Download Disable Verity package and run disable_verity.bat file to disable verity and restart (Authorize USB debugging on device and run again)
7. After DX220 boots up properly with Verity disabled, run reset_loader.bat file so you can enter loader mode
8. Open AndroidTool, click on “Upgrade Firmware” tab, click on Firmware button and select update.img extracted from Purist ROM then click Upgrade
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. 🙂