For new users, please read about PerfectDynamics 2.0 Sound Optimizations first for new improvements with Fidelizer ROMs.
I’m finally back from visiting parents during new year now so the first I did after arriving here is working on iBasso DX220 Purist ROM update. Here’s version 1.16.242 update for iBasso DX220 and I’ll update others with port soon. 🙂
-Based on iBasso DX220 firmware version V1.16.242
–Yalp Store is added as Play Store’s alternative (I still keep Google services for those who want to install Play Store through other means)
-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 DX220 Purist ROM
Installation Guide
1. Install Rockchip USB driver included in AndroidTool and make sure it shows ‘Found One ADB device’ in AndroidTool software
2. Extract Official Oreo ROM firmware from iBasso to device’s 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 DX220 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 (You may need to authorize USB debugging and run disable verity again if not reboot)
7. After DX220 boots up properly with Verity disabled, turn off device and connect with USB connection to computer while holding play button
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 iBasso DX220 Fidelizer Mod project with 3 modification levels and happy listening. 🙂