Before publishing Fidelizer ROMs for iBasso DX200 unit, I used to release Fidelizer ROMs for iBasso DX50/80/90 too. However, the project was on hold due to unfavorable interference in Head-Fi.

Yesterday, I received order for Advanced ROM of DX80 and I also was tipped for DX50 a day before as well. So, I spend all day baking and cooking all iBasso DX50/80/90 ROMs which are 15 ROMs in total. It was very exhausting.

iBasso DX50/80/90 will contain the following features as below:

-Based on most recent version from official iBasso website
-System font was replaced with lighter version of Nimbus font
-build.prop tweaks for better video and storage performance and improve battery life
-audio engine optimized for only audio playback (EQ/Gaplass features work)
-bundled audio effects removed but keep main engine

Download: iBasso DX50 – DX80 – DX90 Purist ROMs

Installation Guide

1. Extract update.img from archive and copy to internal storage (or the micro SD slot 1 for DX80)
2. Open device Settings > Advanced > System Update
3. Wait for device to finish flashing
4. After flashing is completed, I recommend choosing Slow filter

Since many people asked for Gaplass and Equalizer, I decided to lower the bar for people who want it. This is different from Advanced ROM I cooked for some members before but that’s as far as I can do to keep up with compatibility request.

You can read more about Enhanced and Advanced ROM upgrades in Portable Products section. I’ll introduce Fidelizer Mod for them soon.