Sorry. Did I scare you? Shortly after the announcement, I found a way to repack Purist ROM I modified. Oreo has a lot of security features added making ROM customization becoming harder but not far from possibilities.
-Based on firmware version Oreo 8.1 Beta 0.01.008
-Play Store added (Not working yet. I recommend Yalp Store for now)
-Apollo – Fidelity Edition from https://forum.xda-developers.com/android/apps-games/apollo-music-player-fidelity-edition-t3038629 included
-Revamped MangoPlayer UI with improved user experience
-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 DX200 Oreo 8.1 Beta Purist ROM | XMOS Firmware 1.2 Update
Installation Guide
First of all, this Oreo ROM comes with Verity enabled to protect system partition images. Even if you managed to flash modified system image and boot properly, those files won’t be updated and use older files from cache partition. To disable Verity, please follow the instructions below.
1. Go to Settings > System > About tablet and tap “Build number” for 7 times to enable “Developer options”
2. Tap back arrow and enter “Developer options” and enable “USB debugging”, press OK
3. Download Disable Verity package and run disable_verity.bat file (You can install driver from Official Oreo ROM package)
After DX200 boots up properly with Verity disabled, you can start flashing Purist ROM now with these steps below.
1. Turn off DX200
2. Connect DX200 with USB connection to computer while holding play button switch
3. Install Rockchip USB driver included in update tool
4. Flash Official Oreo ROM Beta firmware from iBasso with instructions provided in update tool
5. After successfully flashing official one, flash Purist ROM again
This firmware is still in beta stage so it’s not stable yet. If you have any issue with Oreo ROM beta, you can always go back to official 2.1.94 version and then flash Fidelizer Purist ROM thereafter for better sound quality and system performance. 🙂