Fiio X3

[ScaV]

Yeah! I know, how to calculate this checksum)
I disassemble and decompile the "packtools" from Fiio, and wrote a code that are able to append a valid 4-byte checksum at the end of the firmware file.

Pastebin:
http://pastebin.com/TXxT7157

[De_Cadanz]

Yeah! I know, how to calculate this checksum)
I disassemble and decompile the "packtools" from Fiio, and wrote a code that are able to append a valid 4-byte checksum at the end of the firmware file.

Amazing! What is the next step?
Unfortunately, i'm not a programmer, and i can only help with disassembling player and making HD photo of components.
And, of course, testing.

[saratoga]

Yeah! I know, how to calculate this checksum)
I disassemble and decompile the "packtools" from Fiio, and wrote a code that are able to append a valid 4-byte checksum at the end of the firmware file.

Amazing! What is the next step?
Unfortunately, i'm not a programmer, and i can only help with disassembling player and making HD photo of components.

I suggested above that someone make a wiki page for the X3 and post scans of the boards and a list of components. 

[ScaV]

I will try to scan a board. But it can be problematic, because of too bulging details, such as 3.5 jacks.

[wodz]

Good photo is probably better.

[De_Cadanz]

I suggested above that someone make a wiki page for the X3 and post scans of the boards and a list of components.

How I can create wiki page?

[De_Cadanz]

I disassemble my X3 and check it's components:

Relay - HFD4/5-S1
Power controller - AXP192
Amplifier - AD8692
Op-amp - AD8397
DAC - WM8740SEDS
Thermostat - LM26
RAM - HYNIX H5PS1G63EFR
ROM - NCTSTM16-08G
LCD - DL240QV018T-44A V1.0
Vol\Tone controller - NJW1194

Photo (not my):

[pamaury]

Hi,
I recently got interested into the Fiio X1. Although the hardware is a bit different (and the X3 too expensive for me), the SoC is the same and the firmware upgrade format is the same. I'm wrote anopen source version of the unpacker and I figured out the scrambling on the "sys.bin" file (I think). Here is the link to both tools:
http://gerrit.rockbox.org/1165
We are still undecided on whether we will attempt the port or not, more information is needed. Anyway, I think it would be a good thing that people with the players post the photos and hardware description of the Fiio on the wiki, or contact me if you don't want to create an account so I can do it for you.

NOTE: I don't own any of the Fiio players !

[De_Cadanz]

We are still undecided on whether we will attempt the port or not, more information is needed. Anyway, I think it would be a good thing that people with the players post the photos and hardware description of the Fiio on the wiki, or contact me if you don't want to create an account so I can do it for you.

NOTE: I don't own any of the Fiio players !

THX for interesting! Please, make wiki page!
Can you compile your tools for Windows and give link to download?

[ScaV]

If you just need compiled tool, you can use official fiio packtools.

[pamaury]

Hi,
My tools probably doesn't compile for Windows, best is probably to use the original tool here:
https://www.dropbox.com/s/j1plyerdqakn3sz/FirmwareTools-EN-Unix-windows.zip
For the wiki, read this:
http://www.rockbox.org/wiki/WebHome
the procedure is written at the top of the page. I created a stub page here:
http://www.rockbox.org/wiki/FiioX3

[kochegin]

pamaury, I can send you my FiiO X3, if it will help the development of RockBox for this player!

[pamaury]

Hi kochegin,
that's a very nice proposal What I suggest is that we first port Rockbox to the Fiio X1, because I have it and it's presumably the simplest of them.
And when the port is in shape, you can send me yours so that (hopefully), the X3 port is done swiftly.

[kochegin]

All right. Keep me posted. I am willing to help any way I can. If that write me an email kochegin@gmail.com

[goodwin_c]

If this will help - i can upload somewhere firmware backup from internal memory