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Tag Archive for Enhanced ROM

Fiio X5iii Purist ROM version 1.2.1 released – Bright sound signature is now fixed with as Odexed ROM

 in News

 

Fidelizer Mod

 

Sorry for the long delay. I was visiting my parents since last month and I didn’t bring my ROM cooking materials with me. I only got back to my place few days ago and started cooking new Fiio ROMs as soon as possible.

As some people reported and mentioned in forums about Purist ROM sounding brighter than stock ROM, it was caused by de-odexing ROM which is a common practice for ROM cooking with ART runtime.

Odexed file is compiled as Dalvik byte code so app will run through Dalvik VM. De-odexing ROM will allow ART runtime to run app natively which also improve transparency and resolution in audio too.

However, opamps used in Fiio devices tend to sound brighter so de-odexing will make those characteristics more revealing too. I will publish odexed ROM so it won’t change sound signature on stock unit and use de-odexed ROM for Fidelizer Mod version.

 

-Based on firmware version 1.2.1
-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 X5iii Purist ROM

 

Installation Guide

1. Download X5iii Firmware Upgrade Tool
2. Turn off Fiio X5iii
3. Connect X5iii 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 X5III Firmware Upgrade Tool.exe and flash ROM according to instructions provided in Instructions of How to Use the X5 3rd gen Firwmare Upgrade Tool.pdf

For Mac / Linux users, please check this guide for flashing Fidelizer Purist ROM on Mac / Linux instructions.

 

There’s a lot of improvements for Advanced ROM and I also added Enhanced ROM into collection too. Please read Portable Products for more details including Fiio X5iii Fidelizer Mod project with 3 modification levels. Happy listening. 🙂

iBasso DX200 Purist ROM version 2.9.209 released!

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DX200 - Purist ROM

 

I thought I’d release DX200 2.9 ROM together with PerfectDynamics 2.0 but sadly I haven’t finished it yet especially after listening to classical concert in Golden Hall. There’s a lot for me to do to improve Purist ROM for 2.0 release.

However, I managed to fix a few issues during development so I’ll also include those fixes into this release too. I apologize for the issues that happened with some cases in Enhanced / Advanced ROM and now they’re all resolved. 🙂

 

-Based on firmware version 2.9.209
-Play Store added
-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)
-Bundled audio effects removed but keep main engine (Poweramp works now)

 

Download: iBasso DX200 Purist ROM

 

Installation Guide

1. Download Factory Tool provided by Paul http://www.ibasso.com/uploadfiles/download/FactoryTool_v1.39_DX200.zip
2. Turn off DX200
3. Connect DX200 with USB connection to computer while holding play button switch
4. Install Rockchip USB driver included in FactoryTool
5. Open FactoryTool.exe and flash ROM according to instructions provided in DX200 batch tool instruction.doc

For Mac / Linux users, please check this guide for flashing Fidelizer Purist ROM on Mac / Linux instructions.

 

There’s a lot of improvements for Advanced ROM and I also added Enhanced ROM into collection too. Please read Portable Products for more details including iBasso DX200 Fidelizer Mod project with 3 modification levels. Happy listening. 🙂

Fidelizer Enhanced / Advanced ROM updates for DX150 / DX200 / X5iii / X7 / X7ii

 in News

 

Portable Products

 

I posted about finishing PerfectDynamics 2.0 before attending Munich Show before. There were some progress but it’s still not considered as ready for PerfectDynamics 2.0. So I’ll release bugs fixing version instead.

As some people reported about random stability issues, I later find out that some native apps are relying on debugger and log services for I/O exception handling. Removing those services will result error beyond handling and cause system reboot.

These symptoms doesn’t happen with everyone so if you’re using Enhanced / Advanced ROM without any issue, you won’t need this update. If you have some issues that doesn’t happen with free Purist ROM, you can ask me for sending new ROM update.

PerfectDynamics 2.0 Sound Optimizations will be introduced in Munich 2018 AV Show

 in News

 

Fidelizer - PerfectDynamics Sound Optimizations

 

PerfectDynamics technology is device-specific optimizations for Enhanced / Advanced ROM introduced on 1st October 2017. In upcoming Munich 2018 AV Show, I’ll introduce PerfectDynamics 2.0 with iBasso DX200 and Fiio X5iii device.

During development of PerfectDynamics’ initial version, iBasso DX200 and Fiio X5iii didn’t get the better sounding version of firmware and they later improved in over time. After I tried DX150 2.9 firmware port on DX200, I feel it’s ready to take this to the next level.

Having good sounding firmware to optimize is very important because sometimes you can’t be sure whether this optimization will really improve over all performance or just compesate the flaw with firmware itself. Even now I’m still not sure that I can finish it before the show lol.

 

PerfectDynamics 2.0 Goals:

-Fix random crash and reboot in some scenarios (90% – Fixed stability issues with boot image optimizations)
-Decay, depth and imaging will be important than clarity and separation (60% – Tuning I/O optimizations)
-Transient dynamics will have improved linearity which will also reduce digital glare effect (40% – Tuning PerfectDynamics specific optimizations)
-Full sound reproduction will take higher priority than making audio sounding pure (40% – Tuning audio optimizations)

 

If I can archive all that, PerfectDynamics 2.0 will make Linux based audio performance becoming closer to Fidelizer’s optimizations in Windows. I’ll start working today on iBasso DX200 first and I hope to master PerfectDynamics 2.0 before the show. 🙂

Added X5iii Advanced ROM feedback from Enrique Carlos Díez Martínez

 in Feedback

 

Fidelizer Mod

 

Here’s a new feedback today. This time it’s feedback from Fiio X5iii user with Fidelizer Enhanced ROM.

Hi Keetakawee,

Thanks for your quick answer and advice. I followed your recommendation and everything is running OK. I’m more than happy with Fidelizer, I was somewhat dissapointed with the FIIO X5 III performance but after installing your Fidelizer Enhanced ROM the DAP is performing in a better sonic way.

Regards. Enrique.

I’m happy to hear Fidelizer Purist ROM enhances his satisfaction with Fiio X5iii DAP. This device has a lot of potentials for after-market improvements. 🙂