Rockbox for iBasso DX90 dual boot with Mango (Stock Firmware) | Page 41 | Headphone Reviews and Discussion - Head-Fi.org

all999 · Dec 7, 2014 at 5:30 AM

Can someone upload some older versions of RB and drop some links? Thx!

napka · Dec 8, 2014 at 11:23 AM

gustavmahler said:
How do i get the music in the internal memory of the DX90 (in the root of the memory) to show up in rockbox? Is it possible? Or maybe i need to paste it in the rockbox folder?

/mnt/sdcard

napka · Dec 8, 2014 at 11:24 AM

all999 said:
Can someone upload some older versions of RB and drop some links? Thx!

Check this: http://napych.com/other/rockbox-for-ibasso-dx90/

jj69 · Dec 9, 2014 at 1:06 AM

For those who have been hoping for a new build of Rockbox for DX90 including Lurker0's L2 version of Mango, Cholero was kind enough to put a build together for me.

I have been using it all weekend with Mango L2, and for a couple of hours this evening with Rockbox. So far, I have not had a single issue. This version is truly the best of both worlds. The best version of Lurker0 Mango + Rockbox in a convenient dual boot format. No more flashing firmware!

However, please use at your own risk. I am not a programmer, and Cholero does not own a DX90 himself for testing purposes.

You can download the new build here:

https://www.sendspace.com/file/akre2l

ebe2000 · Dec 9, 2014 at 11:49 AM

I should have not done that! Now my Ibasso does´t start anymore at all!

ebe2000 · Dec 9, 2014 at 12:11 PM

HELP!!!
After putting on the above RB file, I can not restart the DX90. Still can connect to my Mac, deleted the RB file and put Lurker`s 2.1.5L2 back on, went into system recovery, gone to update from SD (internal) card and get following message:
"Can not found firmware image or invalid image. Update rkimage complete"
What can I do now to get my music going again?

jj69 · Dec 9, 2014 at 1:16 PM

Did you follow the installation instructions on Page 1 of this thread? Did you have the Rockbox file installed first?

jamato8 · Dec 9, 2014 at 1:25 PM

ebe2000 said:
HELP!!!
After putting on the above RB file, I can not restart the DX90. Still can connect to my Mac, deleted the RB file and put Lurker`s 2.1.5L2 back on, went into system recovery, gone to update from SD (internal) card and get following message:
"Can not found firmware image or invalid image. Update rkimage complete"
What can I do now to get my music going again?

If you have a PC or a Mac that can run Microsoft (I have a Mac and run Parallels and Windows 7) you can install the batch tool and that can reinstall a FW.

ebe2000 · Dec 9, 2014 at 1:42 PM

I have the batch tool, but it says the chip is not OK, was probably fried!

ebe2000 · Dec 9, 2014 at 1:50 PM

2.1.5 from Ibasso was corrupt, 2.0.5 worked with the batch tool. All OK again - yippy

ebe2000 · Dec 9, 2014 at 2:00 PM

But now I am stuck with 2.0.5 as no other firmware is accepted. Do I have to update step by step (2.1.0, 2.1.5, 2.1.5L2) or can I just put the newest Lurker FW straight on?

ebe2000 · Dec 9, 2014 at 2:10 PM

Checked the directory, internal storage on DX90 , and there is an empty folder called "System Volume Information". Can´t see this folder on my computer when connected and therefore can´t delete. Any suggestions?
Edit: Saw folder under Windows and it is a .album_img file. Tried to delete but keeps staying, weird.

I just can´t get rid of the "System Volume Information" folder in my internal storage which is the .album_img file. This is why it would not read any update files, they are also .img files.

ebe2000 · Dec 12, 2014 at 11:18 AM

Problem solved, reformatted internal and SD card on Mac, then used Ibasso tools to reflash DX90, then updated to 2.1.5L2. Strangly the "System Volume Information" folder is now on the SD card which I am going to discard.

Lurker0 · Dec 18, 2014 at 8:26 AM

headwhacker, is it true that Rockbox for DX90 does not use hardware (in-DAC) volume control, recalculating samples instead? Acidently, I went past this source code today and was quite disappointed!

headwhacker · Dec 18, 2014 at 9:32 AM

lurker0 said:
headwhacker, is it true that Rockbox for DX90 does not use hardware (in-DAC) volume control, recalculating samples instead? Acidently, I went past this source code today and was quite disappointed!

The code in the official rockbox repository for DX90 is a direct port from the DX50 branch which is now actively being developed by @cholero. His objective is to make the implementation similar to the standard rockbox Android port.

My build is a separate repository which is also mentioned in the first page.

Here's the link to the code for the volume control
pcm-tinyalsa.c

This is how I wrote my DX90 build to control the volume. Which is actually taken from Illia's original DX50 port.

void pcm_set_mixer_volume(int volume)
{
   int val = (volume+990)*255/990;
       FILE *f = fopen("/sys/class/codec/es9018_volume", "w");
       fprintf(f, "%d", val);
   fclose(f);
}

It is basically the same way how Mango controls volume. Which is the DAC's native alsa driver/interface as implemented by iBasso.

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