Rockbox for iBasso DX50 dual boot with stock firmware

Dec 27, 2014 at 6:18 AM Post #1,428 of 2,020
Tried to do what is stated in the guide but I've had this issue: "Can not found firmware image or invalid image. Installation aborted". I've jsut put the update.img in the external sd card root. Did I make some mistake?
 
PS: maybe I wasn't clear: I'm currently running the stock firmware 1.6.0 and I never installed the rockbox before..
 
Dec 27, 2014 at 9:02 AM Post #1,433 of 2,020
Ok it's fully working now!! Everything seems to be fine! The dual boot works as well!
 
One thing that seems to be fixed is the sound stuttering with the files loaded from the external SD. I tried with some of them and I do not have this boring behavior. If this worth for all my files I'm sure I will use ONLY rockbox!!!
 
It's soon to speak about the sound quality but with my HE400 I felt instantly a boost in bass frequencies. Maybe it's just a suggestion!
 
Thank you for your help and work
 
Dec 27, 2014 at 11:38 AM Post #1,434 of 2,020
 
Rockbox do not use that. Running rockbox on DX50 bypasses the Mango Player altogether. Regardless what you change in the MangoPlayer platform it should not affect Rockbox. 

I'm not talking about MangoPlayer application, I'm talking about rockchip rk2928 platform based on modded Android. Mango is just some point which used for proper initialization of HAL layer in this context. HAL layer is system wide.
 
 
 Like I said rockbox directly access the DAC natively not by Android platform.

You are wrong here. DAC is another layer. Rockbox uses alsa driver.
 
For example,
I have DeadBeaf player on Ubuntu platform which plays music using my STX sound card.
I cannot say DeadBeaf directly access the STX because of there is Ubuntu platform with its kernel/drivers/etc.
 
But it's ok! If you don't hear any SQ difference it is not a problem for me.  
Sorry for disturb people who like "uncolorized" rockbox sound, I won't do this anymore :)
 
Cheers!

Pity that "uncolorized" rockbox sound fans don`t understand what You are doing and how it affects SQ (only in good way). Funny how they think that RB alone makes everything just bit-perfect and best sounding.
 
medmitry, I seriously think that Your Sound Unlocked version is best rockbox FW I have tried with DX50 regarding SQ. I hope You won`t ditch developing this further and find all the bugs.
Keep up the great work! Maybe I will soon turn to Your SURB to stay but atm I`m still liking SU 1.3.3 @ FLAC/IIR OFF/CPU variable(default) tad more with Panasonic FC capacitors.
 
Dec 27, 2014 at 2:02 PM Post #1,436 of 2,020
  I'm not talking about MangoPlayer application, I'm talking about rockchip rk2928 platform based on modded Android. Mango is just some point which used for proper initialization of HAL layer in this context. HAL layer is system wide.
 
 
You are wrong here. DAC is another layer. Rockbox uses alsa driver.
 
For example,
I have DeadBeaf player on Ubuntu platform which plays music using my STX sound card.
I cannot say DeadBeaf directly access the STX because of there is Ubuntu platform with its kernel/drivers/etc.
 
But it's ok! If you don't hear any SQ difference it is not a problem for me.  
Sorry for disturb people who like "uncolorized" rockbox sound, I won't do this anymore :)
 
Cheers!

 
I proved this new firmware and the sound quality is very good, in my opinion. 
 
The only things I am some not happy are:
 
- the battery, I read the measures are not too reliable, But it looks very demanding, in 30 minutes of play the battery was down by 10-20%. With the stock firm the battery was at the half after one week of use.
 
- the default size of font, it is too little for my opinion.
 
- some themes don't work very well (ex: redux).
 
 
If "standard" rockbox has similar SQ I could live with it without problem.
 
Also, in Linux you can transport sound without modification using alsa. In Ubuntu, probably, the problem is pulseaudio and they maked it the kernel of sound. You only have to use a distribution can live without pulseaudio (OpenSuSE or Arch Linux), I get it in my htpc (with kodi) using mpd. You can find more information about Linux and sound in this web: http://www.ap-linux.com/ 
 
Dec 27, 2014 at 9:31 PM Post #1,437 of 2,020
   
I proved this new firmware and the sound quality is very good, in my opinion. 
 
The only things I am some not happy are:
 
- the battery, I read the measures are not too reliable, But it looks very demanding, in 30 minutes of play the battery was down by 10-20%. With the stock firm the battery was at the half after one week of use.
 
- the default size of font, it is too little for my opinion.
 
- some themes don't work very well (ex: redux).
 
 
If "standard" rockbox has similar SQ I could live with it without problem.
 
Also, in Linux you can transport sound without modification using alsa. In Ubuntu, probably, the problem is pulseaudio and they maked it the kernel of sound. You only have to use a distribution can live without pulseaudio (OpenSuSE or Arch Linux), I get it in my htpc (with kodi) using mpd. You can find more information about Linux and sound in this web: http://www.ap-linux.com/ 

 
That's what I am trying to say Rockbox in DX50 do not use the Android layer and access DAC via ALSA kernel drivers. I was asking which part exactly the mod was since his desciption was vague.
 
How could you be sure the sound is improved or there is a difference? Did you do a proper blind test? If it's a sighted test. It most likely the difference you hear is placebo.
 
Dec 27, 2014 at 9:36 PM Post #1,438 of 2,020
  Pity that "uncolorized" rockbox sound fans don`t understand what You are doing and how it affects SQ (only in good way). Funny how they think that RB alone makes everything just bit-perfect and best sounding.
 
medmitry, I seriously think that Your Sound Unlocked version is best rockbox FW I have tried with DX50 regarding SQ. I hope You won`t ditch developing this further and find all the bugs.
Keep up the great work! Maybe I will soon turn to Your SURB to stay but atm I`m still liking SU 1.3.3 @ FLAC/IIR OFF/CPU variable(default) tad more with Panasonic FC capacitors.

 
I encourage you to understand first how the software has been written before throwing haphazard comment like that.
 
What I only care about is the claim that it improve the sound in RB. But exactly what has improve and which part is vague.
 
So if someone give you something and said it's improved do you just believe it and not verify if the claim is correct? That is exactly why Rockbox is an open source. Anyone can look at the code, modify and improve it and fix bugs.
 
Dec 28, 2014 at 9:00 AM Post #1,439 of 2,020
  Hi there, first of all thx dx50 rb developers for their work!
 
I implemented some SQ tweaks for latest builds.
 
DX50 Rockbox Sound Unlocked(Beta)
 
  1. hi-fi sound on your DX50

 
  It's not some kind of added built in EQ setting or any kind of DSP. Audio stream is bit perfect.
This fix applies for proper PCM sound device initialization(using HiFi params). It provides ability to sound like WM8740 player instead of generic cheap smartphone.
 

 
Great to have some more active adventurous people among us ;-)
I'm interested in what this modification is that makes what you call hi-fi sound. What did you change on the firmware?
I guess you know that many rockbox users are more interested in scientific than in mystic (me included) so better serve us facts.
 
It is not meant rude, if it sounds like this, I'm sorry (We are such a small group of freaks who spend all their money in headphones so I prefer to have a peaceful relationship to anyone here :-) )
 
Dec 28, 2014 at 9:23 AM Post #1,440 of 2,020
I'm having problems with uninstalling the Sound Unlocked Rockbox. I put the image file of stock Mango 1.6 in the root of the card, recovery mode and install from SD came up with no update or faulty update. Have tried different cards, downloading the image file again, factory reset from recovery.
Factory reset wiped the ".rockbox" file and left the player in iBasso audio start up screen, adding the RB file allows the player to boot into RB, but I can't seem to install any other firmware.
 

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